Гомологичное моделирование комплекса белка с лигандом

В этом задании будем моделировать комплекс лизоцима с лигандом.

In [1]:
import sys 
sys.path.append('/usr/lib/modeller9v7/modlib/')
sys.path.append('/usr/lib/modeller9v7/lib/x86_64-intel8/python2.5/')
import modeller 
import _modeller
import modeller.automodel 
In [2]:
env=modeller.environ()
env.io.hetatm=True
                         MODELLER 9v7, 2009/06/12, r6923

     PROTEIN STRUCTURE MODELLING BY SATISFACTION OF SPATIAL RESTRAINTS


                     Copyright(c) 1989-2009 Andrej Sali
                            All Rights Reserved

                             Written by A. Sali
                               with help from
           B. Webb, M.S. Madhusudhan, M-Y. Shen, M.A. Marti-Renom,
                N. Eswar, F. Alber, M. Topf, B. Oliva, A. Fiser,
                    R. Sanchez, B. Yerkovich, A. Badretdinov,
                      F. Melo, J.P. Overington, E. Feyfant
                 University of California, San Francisco, USA
                    Rockefeller University, New York, USA
                      Harvard University, Cambridge, USA
                   Imperial Cancer Research Fund, London, UK
              Birkbeck College, University of London, London, UK


Kind, OS, HostName, Kernel, Processor: 4, Linux kodomo.fbb.msu.ru 3.8-2-amd64 x86_64
Date and time of compilation         : 2009/06/12 12:23:44
MODELLER executable type             : x86_64-intel8
Job starting time (YY/MM/DD HH:MM:SS): 2018/05/10 19:32:16

В качестве образца будем использовать известную структуру лизоцима из форели.

In [3]:
! wget http://www.pdb.org/pdb/files/1lmp.pdb
--2018-05-10 19:52:37--  http://www.pdb.org/pdb/files/1lmp.pdb
Resolving www.pdb.org... 132.249.213.195
Connecting to www.pdb.org|132.249.213.195|:80... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: https://www.rcsb.org/pdb/files/1lmp.pdb [following]
--2018-05-10 19:52:38--  https://www.rcsb.org/pdb/files/1lmp.pdb
Resolving www.rcsb.org... 132.249.213.190
Connecting to www.rcsb.org|132.249.213.190|:443... connected.
HTTP request sent, awaiting response... 301 Moved Permanently
Location: http://files.rcsb.org/view/1lmp.pdb [following]
--2018-05-10 19:52:39--  http://files.rcsb.org/view/1lmp.pdb
Resolving files.rcsb.org... 132.249.213.141
Connecting to files.rcsb.org|132.249.213.141|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [text/plain]
Saving to: `1lmp.pdb'

    [      <=>                              ] 130,410      126K/s   in 1.0s    

2018-05-10 19:52:40 (126 KB/s) - `1lmp.pdb' saved [130410]

А работать будем с лизоцимом из двустворчатого моллюска пэкхап, он же хамагури (Meretrix lusoria) (LYS_MERLU). У этого моллюска деликатесное нежное мясо, которое зимой едят сырым. Логично, у него же есть лизоцим, которым защищает от бактерий. Захотелось есть.

In [4]:
! wget http://www.uniprot.org/uniprot/P86383.fasta
--2018-05-10 20:24:52--  http://www.uniprot.org/uniprot/P86383.fasta
Resolving www.uniprot.org... 193.62.193.81, 128.175.240.211
Connecting to www.uniprot.org|193.62.193.81|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 194 [text/plain]
Saving to: `P86383.fasta'

100%[======================================>] 194         --.-K/s   in 0s      

2018-05-10 20:24:52 (23.6 MB/s) - `P86383.fasta' saved [194/194]

In [22]:
alignm=modeller.alignment(env)
In [23]:
alignm.append(file='P86383.fasta', align_codes='all',alignment_format='FASTA')
## создадим модель
mdl = modeller.model(env, file='1lmp.pdb', model_segment=('FIRST:'+'A', 'LAST:'+'A'))
## и добавим в выравнивание
alignm.append_model(mdl, atom_files='1lmp.pdb', align_codes='1lmp')
## есть смысл поправить идентификаторы
alignm[0].code = 'MERLU'
alignm[1].code = '1LMP'
In [24]:
alignm.salign()
alignm.write(file='all_in_one.ali', alignment_format='PIR')
SALIGN_____> adding the next group to the alignment; iteration    1
In [25]:
! cat all_in_one.ali
>P1;MERLU
sequence::     : :     : :::-1.00:-1.00
FAGGIVSQRCLSCICKMESGCRNVGCKMDMGSLSCGYFQIKEAYWIDCGRPGSSWKSCAASSYC--------ASL
CVQNYMKRYAKWAGCPLRCEGFAREHNGGPRGCKKGSTIGYWNRLQKISGCHGVQ--*

>P1;1LMP
structureX:1lmp.pdb:   1 :A:+132 :A:MOL_ID  1; MOLECULE  LYSOZYME; CHAIN  A; SYNONYM  MUCOPEPTIDE N-ACETYLMURAMYLHYDROLASE; EC  3.2.1.17:MOL_ID  1; ORGANISM_SCIENTIFIC  ONCORHYNCHUS MYKISS; ORGANISM_COMMON  RAINBOW TROUT; ORGANISM_TAXID  8022; ORGAN  KIDNEY: 2.00:-1.00
KVYDRCELARALKASGMDGYAGNSLPNWVCLSKWESSYNTQATNRNTDGSTDYGIFQINSRYWCDDGRTPGAKNV
CGIRCSQLLTDDLTVAIRCAKRVVLDPNGIGAWVAWRLHCQNQDLRSYVAGCGV...*

В последовательности лизоцима из моллюска не хватает жемчужины - лиганда. Добавим его.

In [37]:
with open("all_in_one.ali", 'r') as ali:
    seq = ali.read().split("*")
    seq[0] = seq[0][:-2] + "..."
    seq[1] = seq[1][:-3] + "-..."
    new = "*".join(seq)
with open("withlig.ali", 'w') as out:
    out.write(new)
In [38]:
! cat withlig.ali
>P1;MERLU
sequence::     : :     : :::-1.00:-1.00
FAGGIVSQRCLSCICKMESGCRNVGCKMDMGSLSCGYFQIKEAYWIDCGRPGSSWKSCAASSYC--------ASL
CVQNYMKRYAKWAGCPLRCEGFAREHNGGPRGCKKGSTIGYWNRLQKISGCHGVQ...*

>P1;1LMP
structureX:1lmp.pdb:   1 :A:+132 :A:MOL_ID  1; MOLECULE  LYSOZYME; CHAIN  A; SYNONYM  MUCOPEPTIDE N-ACETYLMURAMYLHYDROLASE; EC  3.2.1.17:MOL_ID  1; ORGANISM_SCIENTIFIC  ONCORHYNCHUS MYKISS; ORGANISM_COMMON  RAINBOW TROUT; ORGANISM_TAXID  8022; ORGAN  KIDNEY: 2.00:-1.00
KVYDRCELARALKASGMDGYAGNSLPNWVCLSKWESSYNTQATNRNTDGSTDYGIFQINSRYWCDDGRTPGAKNV
CGIRCSQLLTDDLTVAIRCAKRVVLDPNGIGAWVAWRLHCQNQDLRSYVAGCGV-...*
In [39]:
## Выбираем объект для моделирования 
s = alignm[0]
pdb = alignm[1]

print s.code, pdb.code

## Создаем объект automodel
a = modeller.automodel.automodel(env, alnfile='withlig.ali', knowns= pdb.code, sequence = s.code )

a.name='mod'+s.code
a.starting_model = 1
a.ending_model = 2
a.make()
MERLU 1LMP
automodel__W> Topology and/or parameter libraries already in memory. These will
                be used instead of the automodel defaults. If this is not what you
                want, clear them before creating the automodel object with
                env.libs.topology.clear() and env.libs.parameters.clear()
fndatmi_285W> Only      129 residues out of      132 contain atoms of type  CA
              (This is usually caused by non-standard residues, such
              as ligands, or by PDB files with missing atoms.)
fndatmi_285W> Only      129 residues out of      132 contain atoms of type  CA
              (This is usually caused by non-standard residues, such
              as ligands, or by PDB files with missing atoms.)

check_ali___> Checking the sequence-structure alignment. 

Implied target CA(i)-CA(i+1) distances longer than  8.0 angstroms:

ALN_POS  TMPL  RID1  RID2  NAM1  NAM2     DIST
----------------------------------------------
END OF TABLE

getf_______W> RTF restraint not found in the atoms list:
              residue type, indices:    14   122
              atom names           : C     +N
              atom indices         :   924     0

getf_______W> RTF restraint not found in the atoms list:
              residue type, indices:    14   122
              atom names           : C     CA    +N    O
              atom indices         :   924   918     0   925
fndatmi_285W> Only      129 residues out of      132 contain atoms of type  CA
              (This is usually caused by non-standard residues, such
              as ligands, or by PDB files with missing atoms.)
patch_s_522_> Number of disulfides patched in MODEL:        1
mdtrsr__446W> A potential that relies on one protein is used, yet you have at
              least one known structure available. MDT, not library, potential is used.
iup2crm_280W> No topology library in memory or assigning a BLK residue.
              Default CHARMM atom type assigned:  C1 -->  CT2
              This message is written only for the first such atom.
43 atoms in HETATM residues constrained
to protein atoms within 2.30 angstroms
and protein CA atoms within 10.00 angstroms
43 atoms in residues without defined topology
constrained to be rigid bodies
condens_443_> Restraints marked for deletion were removed.
              Total number of restraints before, now:    11264    10431
read_pd_403W> Treating residue type  NAG as a BLK (rigid body)
              even though topology information appears to be at least
              partially available. To treat this residue flexibly
              instead, remove the corresponding 'MODELLER BLK RESIDUE'
              REMARK from the input PDB file.
read_pd_403W> Treating residue type  NAG as a BLK (rigid body)
              even though topology information appears to be at least
              partially available. To treat this residue flexibly
              instead, remove the corresponding 'MODELLER BLK RESIDUE'
              REMARK from the input PDB file.
read_pd_403W> Treating residue type  NDG as a BLK (rigid body)
              even though topology information appears to be at least
              partially available. To treat this residue flexibly
              instead, remove the corresponding 'MODELLER BLK RESIDUE'
              REMARK from the input PDB file.
iupac_m_397W> Atoms were not swapped because of the uncertainty of how to handle the H atom.
iupac_m_397W> Atoms were not swapped because of the uncertainty of how to handle the H atom.
iupac_m_484W> Dihedral still outside +-90:      -90.1867


>> ENERGY; Differences between the model's features and restraints:
Number of all residues in MODEL                   :      125
Number of all, selected real atoms                :      969     969
Number of all, selected pseudo atoms              :        0       0
Number of all static, selected restraints         :    10431   10431
COVALENT_CYS                                      :        F
NONBONDED_SEL_ATOMS                               :        1
Number of non-bonded pairs (excluding 1-2,1-3,1-4):     2153
Dynamic pairs routine                             : 2, NATM x NATM cell sorting
Atomic shift for contacts update (UPDATE_DYNAMIC) :    0.390
LENNARD_JONES_SWITCH                              :    6.500   7.500
COULOMB_JONES_SWITCH                              :    6.500   7.500
RESIDUE_SPAN_RANGE                                :        0   99999
NLOGN_USE                                         :       15
CONTACT_SHELL                                     :    4.000
DYNAMIC_PAIRS,_SPHERE,_COULOMB,_LENNARD,_MODELLER :        T       T       F       F       F
SPHERE_STDV                                       :    0.050
RADII_FACTOR                                      :    0.820
Current energy                                    :         695.1116





Summary of the restraint violations: 

   NUM     ... number of restraints.
   NUMVI   ... number of restraints with RVIOL > VIOL_REPORT_CUT[i].
   RVIOL   ... relative difference from the best value.
   NUMVP   ... number of restraints with -Ln(pdf) > VIOL_REPORT_CUT2[i].
   RMS_1   ... RMS(feature, minimally_violated_basis_restraint, NUMB).
   RMS_2   ... RMS(feature, best_value, NUMB).
   MOL.PDF ... scaled contribution to -Ln(Molecular pdf).

 #                     RESTRAINT_GROUP      NUM   NUMVI  NUMVP   RMS_1   RMS_2         MOL.PDF     S_i
------------------------------------------------------------------------------------------------------
 1 Bond length potential              :     947       0      0   0.005   0.005      6.6637       1.000
 2 Bond angle potential               :    1266       0      2   1.982   1.982      97.908       1.000
 3 Stereochemical cosine torsion poten:     591       0     31  49.004  49.004      211.46       1.000
 4 Stereochemical improper torsion pot:     381       0      0   1.248   1.248      12.202       1.000
 5 Soft-sphere overlap restraints     :    2153       1      2   0.008   0.008      15.584       1.000
 6 Lennard-Jones 6-12 potential       :       0       0      0   0.000   0.000      0.0000       1.000
 7 Coulomb point-point electrostatic p:       0       0      0   0.000   0.000      0.0000       1.000
 8 H-bonding potential                :       0       0      0   0.000   0.000      0.0000       1.000
 9 Distance restraints 1 (CA-CA)      :    2204       0      0   0.289   0.289      54.607       1.000
10 Distance restraints 2 (N-O)        :    2337       0      0   0.347   0.347      80.981       1.000
11 Mainchain Phi dihedral restraints  :       0       0      0   0.000   0.000      0.0000       1.000
12 Mainchain Psi dihedral restraints  :       0       0      0   0.000   0.000      0.0000       1.000
13 Mainchain Omega dihedral restraints:     121       0      0   4.036   4.036      23.247       1.000
14 Sidechain Chi_1 dihedral restraints:      97       0      1  86.038  86.038      29.467       1.000
15 Sidechain Chi_2 dihedral restraints:      65       0      0  87.077  87.077      26.006       1.000
16 Sidechain Chi_3 dihedral restraints:      33       0      0  83.699  83.699      23.143       1.000
17 Sidechain Chi_4 dihedral restraints:      17       0      0  85.250  85.250      9.9344       1.000
18 Disulfide distance restraints      :       1       0      0   0.009   0.009     0.13882E-01   1.000
19 Disulfide angle restraints         :       2       0      0   1.659   1.659     0.12148       1.000
20 Disulfide dihedral angle restraints:       1       0      0  36.120  36.120      1.1835       1.000
21 Lower bound distance restraints    :       0       0      0   0.000   0.000      0.0000       1.000
22 Upper bound distance restraints    :       0       0      0   0.000   0.000      0.0000       1.000
23 Distance restraints 3 (SDCH-MNCH)  :     752       0      0   0.439   0.439      14.784       1.000
24 Sidechain Chi_5 dihedral restraints:       0       0      0   0.000   0.000      0.0000       1.000
25 Phi/Psi pair of dihedral restraints:     120      19     16  30.026  73.989      61.489       1.000
26 Distance restraints 4 (SDCH-SDCH)  :      95       0      0   1.005   1.005      9.3167       1.000
27 Distance restraints 5 (X-Y)        :    1401       0      0   0.038   0.038      16.997       1.000
28 NMR distance restraints 6 (X-Y)    :       0       0      0   0.000   0.000      0.0000       1.000
29 NMR distance restraints 7 (X-Y)    :       0       0      0   0.000   0.000      0.0000       1.000
30 Minimal distance restraints        :       0       0      0   0.000   0.000      0.0000       1.000
31 Non-bonded restraints              :       0       0      0   0.000   0.000      0.0000       1.000
32 Atomic accessibility restraints    :       0       0      0   0.000   0.000      0.0000       1.000
33 Atomic density restraints          :       0       0      0   0.000   0.000      0.0000       1.000
34 Absolute position restraints       :       0       0      0   0.000   0.000      0.0000       1.000
35 Dihedral angle difference restraint:       0       0      0   0.000   0.000      0.0000       1.000
36 GBSA implicit solvent potential    :       0       0      0   0.000   0.000      0.0000       1.000
37 EM density fitting potential       :       0       0      0   0.000   0.000      0.0000       1.000
38 SAXS restraints                    :       0       0      0   0.000   0.000      0.0000       1.000
39 Symmetry restraints                :       0       0      0   0.000   0.000      0.0000       1.000



# Heavy relative violation of each residue is written to: MERLU.V99990001
# The profile is NOT normalized by the number of restraints.
# The profiles are smoothed over a window of residues:    1
# The sum of all numbers in the file:   13777.8506



List of the violated restraints:
   A restraint is violated when the relative difference
   from the best value (RVIOL) is larger than CUTOFF.

   ICSR   ... index of a restraint in the current set.
   RESNO  ... residue numbers of the first two atoms.
   ATM    ... IUPAC atom names of the first two atoms.
   FEAT   ... the value of the feature in the model.
   restr  ... the mean of the basis restraint with the smallest
              difference from the model (local minimum).
   viol   ... difference from the local minimum.
   rviol  ... relative difference from the local minimum.
   RESTR  ... the best value (global minimum).
   VIOL   ... difference from the best value.
   RVIOL  ... relative difference from the best value.


-------------------------------------------------------------------------------------------------

Feature 25                           : Phi/Psi pair of dihedral restraints     
List of the RVIOL violations larger than   :       6.5000

    #   ICSR  RESNO1/2 ATM1/2   INDATM1/2    FEAT   restr    viol   rviol   RESTR    VIOL   RVIOL
    1   3192   3G   4G C   N      19   21  -85.42  -80.20   12.10    0.73   82.20 -131.92    7.47
    1          4G   4G N   CA     21   22  163.18  174.10                    8.50
    2   3203  14I  15C C   N      98  100  -83.86  -63.00   69.30    7.34  -63.00   69.30    7.34
    2         15C  15C N   CA    100  101   24.99  -41.10                  -41.10
    3   3204  15C  16K C   N     104  106   59.07   56.60   11.28    0.64  -62.90  139.84   24.43
    3         16K  16K N   CA    106  107   27.59   38.60                  -40.80
    4   3207  18E  19S C   N     130  132   65.17   56.90   17.49    0.73  -64.10  140.88   18.80
    4         19S  19S N   CA    132  133   20.99   36.40                  -35.00
    5   3219  30M  31G C   N     215  217  -63.67  -62.40    1.55    0.23   82.20  153.82   11.68
    5         31G  31G N   CA    217  218  -40.31  -41.20                    8.50
    6   3225  36G  37Y C   N     249  251   65.33   55.90    9.84    0.94  -63.50  151.71   28.69
    6         37Y  37Y N   CA    251  252   36.71   39.50                  -43.40
    7   3226  37Y  38F C   N     261  263   63.30   58.10    6.74    0.52  -63.20  146.01   26.29
    7         38F  38F N   CA    263  264   28.62   32.90                  -44.30
    8   3229  40I  41K C   N     289  291 -106.73 -118.00   93.50    4.37  -62.90   97.49   11.20
    8         41K  41K N   CA    291  292   46.29  139.10                  -40.80
    9   3242  53S  54S C   N     392  394   91.49 -136.60  136.62    4.58  -64.10 -151.88   17.72
    9         54S  54S N   CA    394  395 -173.21  151.20                  -35.00
   10   3245  56K  57S C   N     421  423   55.46   56.90   17.41    0.99  -64.10  148.90   19.17
   10         57S  57S N   CA    423  424   53.75   36.40                  -35.00
   11   3254  65A  66S C   N     478  480  157.33   56.90  103.86   10.66  -64.10  145.67   16.52
   11         66S  66S N   CA    480  481    9.92   36.40                  -35.00
   12   3256  67L  68C C   N     492  494 -106.38 -117.90   41.59    1.44  -63.00  148.70   15.80
   12         68C  68C N   CA    494  495  101.13  141.10                  -41.10
   13   3264  75R  76Y C   N     562  564  -98.66  -63.50   82.47   11.59  -63.50   82.47   11.59
   13         76Y  76Y N   CA    564  565   31.20  -43.40                  -43.40
   14   3269  80A  81G C   N     607  609   19.51   78.70   89.51    1.80  -62.40  100.22   14.84
   14         81G  81G N   CA    609  610  -98.95 -166.10                  -41.20
   15   3282  93H  94N C   N     708  710  -65.64 -119.90   54.26    2.25  -63.20  177.99   22.12
   15         94N  94N N   CA    710  711  136.87  137.00                  -41.10
   16   3283  94N  95G C   N     716  718  123.33   82.20   60.35    1.82  -62.40  174.36   30.92
   16         95G  95G N   CA    718  719  -35.67    8.50                  -41.20
   17   3291 102K 103G C   N     770  772  -62.91  -62.40    1.93    0.31   82.20  154.00   11.74
   17        103G 103G N   CA    772  773  -43.06  -41.20                    8.50
   18   3295 106I 107G C   N     795  797  -74.40  -62.40   12.01    2.13   82.20  164.17   12.41
   18        107G 107G N   CA    797  798  -40.74  -41.20                    8.50
   19   3297 108Y 109W C   N     811  813   52.93   58.80   10.72    0.30  -63.00  144.45   25.29
   19        109W 109W N   CA    813  814   41.97   33.00                  -44.20


report______> Distribution of short non-bonded contacts:


DISTANCE1:  0.00 2.10 2.20 2.30 2.40 2.50 2.60 2.70 2.80 2.90 3.00 3.10 3.20 3.30 3.40
DISTANCE2:  2.10 2.20 2.30 2.40 2.50 2.60 2.70 2.80 2.90 3.00 3.10 3.20 3.30 3.40 3.50
FREQUENCY:     0    0    0    0    0    7   11   60   79  106  123  124  171  168  167


<< end of ENERGY.
read_pd_403W> Treating residue type  NAG as a BLK (rigid body)
              even though topology information appears to be at least
              partially available. To treat this residue flexibly
              instead, remove the corresponding 'MODELLER BLK RESIDUE'
              REMARK from the input PDB file.
read_pd_403W> Treating residue type  NAG as a BLK (rigid body)
              even though topology information appears to be at least
              partially available. To treat this residue flexibly
              instead, remove the corresponding 'MODELLER BLK RESIDUE'
              REMARK from the input PDB file.
read_pd_403W> Treating residue type  NDG as a BLK (rigid body)
              even though topology information appears to be at least
              partially available. To treat this residue flexibly
              instead, remove the corresponding 'MODELLER BLK RESIDUE'
              REMARK from the input PDB file.
iupac_m_397W> Atoms were not swapped because of the uncertainty of how to handle the H atom.


>> ENERGY; Differences between the model's features and restraints:
Number of all residues in MODEL                   :      125
Number of all, selected real atoms                :      969     969
Number of all, selected pseudo atoms              :        0       0
Number of all static, selected restraints         :    10431   10431
COVALENT_CYS                                      :        F
NONBONDED_SEL_ATOMS                               :        1
Number of non-bonded pairs (excluding 1-2,1-3,1-4):     2185
Dynamic pairs routine                             : 2, NATM x NATM cell sorting
Atomic shift for contacts update (UPDATE_DYNAMIC) :    0.390
LENNARD_JONES_SWITCH                              :    6.500   7.500
COULOMB_JONES_SWITCH                              :    6.500   7.500
RESIDUE_SPAN_RANGE                                :        0   99999
NLOGN_USE                                         :       15
CONTACT_SHELL                                     :    4.000
DYNAMIC_PAIRS,_SPHERE,_COULOMB,_LENNARD,_MODELLER :        T       T       F       F       F
SPHERE_STDV                                       :    0.050
RADII_FACTOR                                      :    0.820
Current energy                                    :         859.9468





Summary of the restraint violations: 

   NUM     ... number of restraints.
   NUMVI   ... number of restraints with RVIOL > VIOL_REPORT_CUT[i].
   RVIOL   ... relative difference from the best value.
   NUMVP   ... number of restraints with -Ln(pdf) > VIOL_REPORT_CUT2[i].
   RMS_1   ... RMS(feature, minimally_violated_basis_restraint, NUMB).
   RMS_2   ... RMS(feature, best_value, NUMB).
   MOL.PDF ... scaled contribution to -Ln(Molecular pdf).

 #                     RESTRAINT_GROUP      NUM   NUMVI  NUMVP   RMS_1   RMS_2         MOL.PDF     S_i
------------------------------------------------------------------------------------------------------
 1 Bond length potential              :     947       0      0   0.005   0.005      7.3707       1.000
 2 Bond angle potential               :    1266       2      5   3.045   3.045      140.37       1.000
 3 Stereochemical cosine torsion poten:     591       0     32  50.116  50.116      220.55       1.000
 4 Stereochemical improper torsion pot:     381       0      0   1.171   1.171      11.497       1.000
 5 Soft-sphere overlap restraints     :    2185       1      2   0.008   0.008      17.834       1.000
 6 Lennard-Jones 6-12 potential       :       0       0      0   0.000   0.000      0.0000       1.000
 7 Coulomb point-point electrostatic p:       0       0      0   0.000   0.000      0.0000       1.000
 8 H-bonding potential                :       0       0      0   0.000   0.000      0.0000       1.000
 9 Distance restraints 1 (CA-CA)      :    2204       0      0   0.299   0.299      56.984       1.000
10 Distance restraints 2 (N-O)        :    2337       0      4   0.439   0.439      133.31       1.000
11 Mainchain Phi dihedral restraints  :       0       0      0   0.000   0.000      0.0000       1.000
12 Mainchain Psi dihedral restraints  :       0       0      0   0.000   0.000      0.0000       1.000
13 Mainchain Omega dihedral restraints:     121       0      1   4.150   4.150      24.576       1.000
14 Sidechain Chi_1 dihedral restraints:      97       0      2  89.468  89.468      38.168       1.000
15 Sidechain Chi_2 dihedral restraints:      65       0      0  92.713  92.713      29.983       1.000
16 Sidechain Chi_3 dihedral restraints:      33       0      0  77.922  77.922      21.701       1.000
17 Sidechain Chi_4 dihedral restraints:      17       0      0  88.084  88.084      11.568       1.000
18 Disulfide distance restraints      :       1       0      0   0.012   0.012     0.23993E-01   1.000
19 Disulfide angle restraints         :       2       0      0   1.376   1.376     0.83644E-01   1.000
20 Disulfide dihedral angle restraints:       1       0      0  33.469  33.469      1.0625       1.000
21 Lower bound distance restraints    :       0       0      0   0.000   0.000      0.0000       1.000
22 Upper bound distance restraints    :       0       0      0   0.000   0.000      0.0000       1.000
23 Distance restraints 3 (SDCH-MNCH)  :     752       0      0   0.442   0.442      14.677       1.000
24 Sidechain Chi_5 dihedral restraints:       0       0      0   0.000   0.000      0.0000       1.000
25 Phi/Psi pair of dihedral restraints:     120      25     21  34.652  76.813      102.75       1.000
26 Distance restraints 4 (SDCH-SDCH)  :      95       0      0   0.962   0.962      9.0394       1.000
27 Distance restraints 5 (X-Y)        :    1401       0      0   0.040   0.040      18.397       1.000
28 NMR distance restraints 6 (X-Y)    :       0       0      0   0.000   0.000      0.0000       1.000
29 NMR distance restraints 7 (X-Y)    :       0       0      0   0.000   0.000      0.0000       1.000
30 Minimal distance restraints        :       0       0      0   0.000   0.000      0.0000       1.000
31 Non-bonded restraints              :       0       0      0   0.000   0.000      0.0000       1.000
32 Atomic accessibility restraints    :       0       0      0   0.000   0.000      0.0000       1.000
33 Atomic density restraints          :       0       0      0   0.000   0.000      0.0000       1.000
34 Absolute position restraints       :       0       0      0   0.000   0.000      0.0000       1.000
35 Dihedral angle difference restraint:       0       0      0   0.000   0.000      0.0000       1.000
36 GBSA implicit solvent potential    :       0       0      0   0.000   0.000      0.0000       1.000
37 EM density fitting potential       :       0       0      0   0.000   0.000      0.0000       1.000
38 SAXS restraints                    :       0       0      0   0.000   0.000      0.0000       1.000
39 Symmetry restraints                :       0       0      0   0.000   0.000      0.0000       1.000



# Heavy relative violation of each residue is written to: MERLU.V99990002
# The profile is NOT normalized by the number of restraints.
# The profiles are smoothed over a window of residues:    1
# The sum of all numbers in the file:   14940.5908



List of the violated restraints:
   A restraint is violated when the relative difference
   from the best value (RVIOL) is larger than CUTOFF.

   ICSR   ... index of a restraint in the current set.
   RESNO  ... residue numbers of the first two atoms.
   ATM    ... IUPAC atom names of the first two atoms.
   FEAT   ... the value of the feature in the model.
   restr  ... the mean of the basis restraint with the smallest
              difference from the model (local minimum).
   viol   ... difference from the local minimum.
   rviol  ... relative difference from the local minimum.
   RESTR  ... the best value (global minimum).
   VIOL   ... difference from the best value.
   RVIOL  ... relative difference from the best value.


-------------------------------------------------------------------------------------------------

Feature 25                           : Phi/Psi pair of dihedral restraints     
List of the RVIOL violations larger than   :       6.5000

    #   ICSR  RESNO1/2 ATM1/2   INDATM1/2    FEAT   restr    viol   rviol   RESTR    VIOL   RVIOL
    1   3190   1F   2A C   N      10   12  -66.99  -62.50    9.37    1.40 -134.00 -168.24    8.88
    1          2A   2A N   CA     12   13  -32.67  -40.90                  147.00
    2   3191   2A   3G C   N      15   17   57.62   78.70   75.77    3.01  -80.20  147.66    7.73
    2          3G   3G N   CA     17   18  121.12 -166.10                  174.10
    3   3192   3G   4G C   N      19   21  -81.75  -80.20   14.72    0.66   82.20 -137.13    7.31
    3          4G   4G N   CA     21   22  159.46  174.10                    8.50
    4   3194   5I   6V C   N      31   33  -80.68 -125.40   51.80    2.76  -62.40  149.27   19.99
    4          6V   6V N   CA     33   34  169.45  143.30                  -42.40
    5   3195   6V   7S C   N      38   40   75.94   56.90   78.56    3.60  -64.10  140.12   17.80
    5          7S   7S N   CA     40   41  -39.82   36.40                  -35.00
    6   3204  15C  16K C   N     104  106   77.80   56.60   24.05    2.07  -62.90  156.28   27.30
    6         16K  16K N   CA    106  107   27.23   38.60                  -40.80
    7   3207  18E  19S C   N     130  132   63.62   56.90   16.64    0.68  -64.10  139.53   18.61
    7         19S  19S N   CA    132  133   21.18   36.40                  -35.00
    8   3214  25G  26C C   N     176  178  -56.05  -63.00    7.00    1.20 -117.90 -170.98    8.19
    8         26C  26C N   CA    178  179  -40.28  -41.10                  141.10
    9   3219  30M  31G C   N     215  217  -63.22  -62.40    1.74    0.24   82.20  153.19   11.62
    9         31G  31G N   CA    217  218  -39.67  -41.20                    8.50
   10   3225  36G  37Y C   N     249  251   65.27   55.90   11.08    0.84  -63.50  150.02   28.34
   10         37Y  37Y N   CA    251  252   33.57   39.50                  -43.40
   11   3226  37Y  38F C   N     261  263   60.80   58.10    2.70    0.37  -63.20  146.00   26.32
   11         38F  38F N   CA    263  264   32.77   32.90                  -44.30
   12   3229  40I  41K C   N     289  291 -101.67 -118.00   94.73    4.35  -62.90   94.87   10.92
   12         41K  41K N   CA    291  292   45.79  139.10                  -40.80
   13   3242  53S  54S C   N     392  394   89.09 -136.60  139.00    4.67  -64.10 -153.82   17.45
   13         54S  54S N   CA    394  395 -173.00  151.20                  -35.00
   14   3245  56K  57S C   N     421  423   55.52   56.90   15.02    0.84  -64.10  147.53   19.06
   14         57S  57S N   CA    423  424   51.35   36.40                  -35.00
   15   3254  65A  66S C   N     478  480  157.15   56.90  105.98   10.33  -64.10  143.61   16.72
   15         66S  66S N   CA    480  481    2.04   36.40                  -35.00
   16   3256  67L  68C C   N     492  494 -103.59 -117.90   45.74    1.56  -63.00  144.57   15.42
   16         68C  68C N   CA    494  495   97.65  141.10                  -41.10
   17   3264  75R  76Y C   N     562  564  -97.96  -98.40   81.38    8.66  -63.50   96.77   13.80
   17         76Y  76Y N   CA    564  565   47.02  128.40                  -43.40
   18   3266  77A  78K C   N     579  581  -65.32  -70.20   14.35    1.14  -62.90  165.33   21.60
   18         78K  78K N   CA    581  582  153.89  140.40                  -40.80
   19   3267  78K  79W C   N     588  590   81.48   58.80   83.82    6.18  -71.30  154.86   10.36
   19         79W  79W N   CA    590  591  113.70   33.00                  139.00
   20   3269  80A  81G C   N     607  609   24.81   78.70   86.30    1.60  -62.40  104.46   15.62
   20         81G  81G N   CA    609  610  -98.69 -166.10                  -41.20
   21   3291 102K 103G C   N     770  772  -63.80  -62.40    2.13    0.39   82.20  154.76   11.79
   21        103G 103G N   CA    772  773  -42.81  -41.20                    8.50
   22   3294 105T 106I C   N     787  789 -128.12 -120.60   60.52    3.75  -63.40  130.96   19.93
   22        106I 106I N   CA    789  790   70.25  130.30                  -43.60
   23   3297 108Y 109W C   N     811  813   64.25   58.80    9.87    0.28  -63.00  144.74   25.61
   23        109W 109W N   CA    813  814   24.77   33.00                  -44.20
   24   3300 111R 112L C   N     844  846 -118.87 -108.50   91.69    5.06  -63.50   99.44   12.25
   24        112L 112L N   CA    846  847   41.39  132.50                  -41.20
   25   3305 116S 117G C   N     884  886   56.94   78.70   24.15    0.87  -80.20  140.45   10.07
   25        117G 117G N   CA    886  887 -155.62 -166.10                  174.10


report______> Distribution of short non-bonded contacts:


DISTANCE1:  0.00 2.10 2.20 2.30 2.40 2.50 2.60 2.70 2.80 2.90 3.00 3.10 3.20 3.30 3.40
DISTANCE2:  2.10 2.20 2.30 2.40 2.50 2.60 2.70 2.80 2.90 3.00 3.10 3.20 3.30 3.40 3.50
FREQUENCY:     0    0    0    0    0   11   11   60   83  128  112  149  140  166  172


<< end of ENERGY.

>> Summary of successfully produced models:
Filename                          molpdf
----------------------------------------
MERLU.B99990001.pdb            695.11157
MERLU.B99990002.pdb            859.94684

Рис. 1. Структура модели с наибольшим скором (MERLU.B99990002.pdb - зеленая) довольно хорошо выравнивается с исходной структурой (фиолетовая), включая лиганд. В модели добавились некоторые элементы вторичной структуры, отсутствующие в образце.

Теперь поместим лиганд в другое место.

In [40]:
! rm MERLU.rsr
In [44]:
class mymodel(modeller.automodel.automodel):
    def special_restraints(self, aln):
        rsr = self.restraints
        at = self.atoms
        for x,y in [('O6:123', 'CG:83')]:
            rsr.add(modeller.forms.gaussian(group=modeller.physical.xy_distance, 
                                        feature=modeller.features.distance(at[x],at[y]),
                                        mean=3.0, stdev=0.1))

from modeller import *
from modeller.automodel import *    
a = mymodel(env, alnfile='withlig.ali', knowns= pdb.code, sequence = s.code)
a.make()
automodel__W> Topology and/or parameter libraries already in memory. These will
                be used instead of the automodel defaults. If this is not what you
                want, clear them before creating the automodel object with
                env.libs.topology.clear() and env.libs.parameters.clear()
fndatmi_285W> Only      129 residues out of      132 contain atoms of type  CA
              (This is usually caused by non-standard residues, such
              as ligands, or by PDB files with missing atoms.)
fndatmi_285W> Only      129 residues out of      132 contain atoms of type  CA
              (This is usually caused by non-standard residues, such
              as ligands, or by PDB files with missing atoms.)

check_ali___> Checking the sequence-structure alignment. 

Implied target CA(i)-CA(i+1) distances longer than  8.0 angstroms:

ALN_POS  TMPL  RID1  RID2  NAM1  NAM2     DIST
----------------------------------------------
END OF TABLE

getf_______W> RTF restraint not found in the atoms list:
              residue type, indices:    14   122
              atom names           : C     +N
              atom indices         :   924     0

getf_______W> RTF restraint not found in the atoms list:
              residue type, indices:    14   122
              atom names           : C     CA    +N    O
              atom indices         :   924   918     0   925
fndatmi_285W> Only      129 residues out of      132 contain atoms of type  CA
              (This is usually caused by non-standard residues, such
              as ligands, or by PDB files with missing atoms.)
patch_s_522_> Number of disulfides patched in MODEL:        1
mdtrsr__446W> A potential that relies on one protein is used, yet you have at
              least one known structure available. MDT, not library, potential is used.
iup2crm_280W> No topology library in memory or assigning a BLK residue.
              Default CHARMM atom type assigned:  C1 -->  CT2
              This message is written only for the first such atom.
43 atoms in HETATM residues constrained
to protein atoms within 2.30 angstroms
and protein CA atoms within 10.00 angstroms
43 atoms in residues without defined topology
constrained to be rigid bodies
condens_443_> Restraints marked for deletion were removed.
              Total number of restraints before, now:    11265    10432
read_pd_403W> Treating residue type  NAG as a BLK (rigid body)
              even though topology information appears to be at least
              partially available. To treat this residue flexibly
              instead, remove the corresponding 'MODELLER BLK RESIDUE'
              REMARK from the input PDB file.
read_pd_403W> Treating residue type  NAG as a BLK (rigid body)
              even though topology information appears to be at least
              partially available. To treat this residue flexibly
              instead, remove the corresponding 'MODELLER BLK RESIDUE'
              REMARK from the input PDB file.
read_pd_403W> Treating residue type  NDG as a BLK (rigid body)
              even though topology information appears to be at least
              partially available. To treat this residue flexibly
              instead, remove the corresponding 'MODELLER BLK RESIDUE'
              REMARK from the input PDB file.
iupac_m_397W> Atoms were not swapped because of the uncertainty of how to handle the H atom.


>> ENERGY; Differences between the model's features and restraints:
Number of all residues in MODEL                   :      125
Number of all, selected real atoms                :      969     969
Number of all, selected pseudo atoms              :        0       0
Number of all static, selected restraints         :    10432   10432
COVALENT_CYS                                      :        F
NONBONDED_SEL_ATOMS                               :        1
Number of non-bonded pairs (excluding 1-2,1-3,1-4):     2321
Dynamic pairs routine                             : 2, NATM x NATM cell sorting
Atomic shift for contacts update (UPDATE_DYNAMIC) :    0.390
LENNARD_JONES_SWITCH                              :    6.500   7.500
COULOMB_JONES_SWITCH                              :    6.500   7.500
RESIDUE_SPAN_RANGE                                :        0   99999
NLOGN_USE                                         :       15
CONTACT_SHELL                                     :    4.000
DYNAMIC_PAIRS,_SPHERE,_COULOMB,_LENNARD,_MODELLER :        T       T       F       F       F
SPHERE_STDV                                       :    0.050
RADII_FACTOR                                      :    0.820
Current energy                                    :        2104.5730





Summary of the restraint violations: 

   NUM     ... number of restraints.
   NUMVI   ... number of restraints with RVIOL > VIOL_REPORT_CUT[i].
   RVIOL   ... relative difference from the best value.
   NUMVP   ... number of restraints with -Ln(pdf) > VIOL_REPORT_CUT2[i].
   RMS_1   ... RMS(feature, minimally_violated_basis_restraint, NUMB).
   RMS_2   ... RMS(feature, best_value, NUMB).
   MOL.PDF ... scaled contribution to -Ln(Molecular pdf).

 #                     RESTRAINT_GROUP      NUM   NUMVI  NUMVP   RMS_1   RMS_2         MOL.PDF     S_i
------------------------------------------------------------------------------------------------------
 1 Bond length potential              :     947       3      5   0.016   0.016      61.470       1.000
 2 Bond angle potential               :    1266       4     16   2.811   2.811      190.95       1.000
 3 Stereochemical cosine torsion poten:     591       0     33  49.281  49.281      221.46       1.000
 4 Stereochemical improper torsion pot:     381       0      1   1.498   1.498      18.718       1.000
 5 Soft-sphere overlap restraints     :    2321       1      2   0.009   0.009      19.998       1.000
 6 Lennard-Jones 6-12 potential       :       0       0      0   0.000   0.000      0.0000       1.000
 7 Coulomb point-point electrostatic p:       0       0      0   0.000   0.000      0.0000       1.000
 8 H-bonding potential                :       0       0      0   0.000   0.000      0.0000       1.000
 9 Distance restraints 1 (CA-CA)      :    2204       9     37   0.633   0.633      390.74       1.000
10 Distance restraints 2 (N-O)        :    2337       3     29   0.605   0.605      332.53       1.000
11 Mainchain Phi dihedral restraints  :       0       0      0   0.000   0.000      0.0000       1.000
12 Mainchain Psi dihedral restraints  :       0       0      0   0.000   0.000      0.0000       1.000
13 Mainchain Omega dihedral restraints:     121       2      5   6.436   6.436      59.106       1.000
14 Sidechain Chi_1 dihedral restraints:      97       0      2  88.757  88.757      42.508       1.000
15 Sidechain Chi_2 dihedral restraints:      65       0      1  86.191  86.191      27.168       1.000
16 Sidechain Chi_3 dihedral restraints:      33       0      0  77.983  77.983      22.387       1.000
17 Sidechain Chi_4 dihedral restraints:      17       0      0  95.604  95.604      12.628       1.000
18 Disulfide distance restraints      :       1       0      0   0.014   0.014     0.35678E-01   1.000
19 Disulfide angle restraints         :       2       0      0   0.911   0.911     0.36676E-01   1.000
20 Disulfide dihedral angle restraints:       1       0      0   5.003   5.003     0.30699E-01   1.000
21 Lower bound distance restraints    :       0       0      0   0.000   0.000      0.0000       1.000
22 Upper bound distance restraints    :       0       0      0   0.000   0.000      0.0000       1.000
23 Distance restraints 3 (SDCH-MNCH)  :     752       0      0   0.374   0.374      13.444       1.000
24 Sidechain Chi_5 dihedral restraints:       0       0      0   0.000   0.000      0.0000       1.000
25 Phi/Psi pair of dihedral restraints:     120      29     24  36.903  79.132      137.64       1.000
26 Distance restraints 4 (SDCH-SDCH)  :      95       0      0   0.908   0.908      7.6630       1.000
27 Distance restraints 5 (X-Y)        :    1402       3     13   0.148   0.148      546.06       1.000
28 NMR distance restraints 6 (X-Y)    :       0       0      0   0.000   0.000      0.0000       1.000
29 NMR distance restraints 7 (X-Y)    :       0       0      0   0.000   0.000      0.0000       1.000
30 Minimal distance restraints        :       0       0      0   0.000   0.000      0.0000       1.000
31 Non-bonded restraints              :       0       0      0   0.000   0.000      0.0000       1.000
32 Atomic accessibility restraints    :       0       0      0   0.000   0.000      0.0000       1.000
33 Atomic density restraints          :       0       0      0   0.000   0.000      0.0000       1.000
34 Absolute position restraints       :       0       0      0   0.000   0.000      0.0000       1.000
35 Dihedral angle difference restraint:       0       0      0   0.000   0.000      0.0000       1.000
36 GBSA implicit solvent potential    :       0       0      0   0.000   0.000      0.0000       1.000
37 EM density fitting potential       :       0       0      0   0.000   0.000      0.0000       1.000
38 SAXS restraints                    :       0       0      0   0.000   0.000      0.0000       1.000
39 Symmetry restraints                :       0       0      0   0.000   0.000      0.0000       1.000



# Heavy relative violation of each residue is written to: MERLU.V99990001
# The profile is NOT normalized by the number of restraints.
# The profiles are smoothed over a window of residues:    1
# The sum of all numbers in the file:   17945.7656



List of the violated restraints:
   A restraint is violated when the relative difference
   from the best value (RVIOL) is larger than CUTOFF.

   ICSR   ... index of a restraint in the current set.
   RESNO  ... residue numbers of the first two atoms.
   ATM    ... IUPAC atom names of the first two atoms.
   FEAT   ... the value of the feature in the model.
   restr  ... the mean of the basis restraint with the smallest
              difference from the model (local minimum).
   viol   ... difference from the local minimum.
   rviol  ... relative difference from the local minimum.
   RESTR  ... the best value (global minimum).
   VIOL   ... difference from the best value.
   RVIOL  ... relative difference from the best value.


-------------------------------------------------------------------------------------------------

Feature  1                           : Bond length potential                   
List of the RVIOL violations larger than   :       4.5000

    #   ICSR  RESNO1/2 ATM1/2   INDATM1/2    FEAT   restr    viol   rviol   RESTR    VIOL   RVIOL
    1    637  83P  83P CA  CB    620  622    1.71    1.53    0.18    5.04    1.53    0.18    5.04
    2    639  83P  83P CG  CD    623  621    1.80    1.54    0.26    7.09    1.54    0.26    7.09
    3    640  83P  83P N   CD    619  621    1.64    1.46    0.18    5.92    1.46    0.18    5.92

-------------------------------------------------------------------------------------------------

Feature  2                           : Bond angle potential                    
List of the RVIOL violations larger than   :       4.5000

    #   ICSR  RESNO1/2 ATM1/2   INDATM1/2    FEAT   restr    viol   rviol   RESTR    VIOL   RVIOL
    1   1797  83P  83P N   CA    619  620  128.92  108.20   20.73    4.71  108.20   20.73    4.71

-------------------------------------------------------------------------------------------------

Feature  9                           : Distance restraints 1 (CA-CA)           
List of the RVIOL violations larger than   :       4.5000

    #   ICSR  RESNO1/2 ATM1/2   INDATM1/2    FEAT   restr    viol   rviol   RESTR    VIOL   RVIOL
    1   4834  40I  83P CA  CA    284  620   11.82    8.98    2.84    4.81    8.98    2.84    4.81
    2   5520  75R  83P CA  CA    554  620    7.58    5.09    2.49    6.76    5.09    2.49    6.76
    3   5559  80A  83P CA  CA    605  620    7.50    5.22    2.28    5.80    5.22    2.28    5.80

-------------------------------------------------------------------------------------------------

Feature 10                           : Distance restraints 2 (N-O)             
List of the RVIOL violations larger than   :       4.5000

    #   ICSR  RESNO1/2 ATM1/2   INDATM1/2    FEAT   restr    viol   rviol   RESTR    VIOL   RVIOL
    1   7523  83P  77A N   O     619  580   12.69    7.30    5.38    6.57    7.30    5.38    6.57
    2   7526  83P  80A N   O     619  608    5.33    3.14    2.18    4.79    3.14    2.18    4.79

-------------------------------------------------------------------------------------------------

Feature 25                           : Phi/Psi pair of dihedral restraints     
List of the RVIOL violations larger than   :       6.5000

    #   ICSR  RESNO1/2 ATM1/2   INDATM1/2    FEAT   restr    viol   rviol   RESTR    VIOL   RVIOL
    1   3192   3G   4G C   N      19   21  -82.91  -80.20   10.27    0.54   82.20 -133.06    7.34
    1          4G   4G N   CA     21   22  164.19  174.10                    8.50
    2   3202  13C  14I C   N      90   92  -95.72 -120.60   84.16    3.90  -63.40   98.93   15.28
    2         14I  14I N   CA     92   93   49.90  130.30                  -43.60
    3   3203  14I  15C C   N      98  100 -147.98  -63.00  103.85   12.98  -63.00  103.85   12.98
    3         15C  15C N   CA    100  101   18.59  -41.10                  -41.10
    4   3204  15C  16K C   N     104  106   54.47   56.60    5.17    0.53  -62.90  139.12   24.25
    4         16K  16K N   CA    106  107   33.89   38.60                  -40.80
    5   3207  18E  19S C   N     130  132   59.79   56.90   18.65    0.96  -64.10  134.75   17.99
    5         19S  19S N   CA    132  133   17.98   36.40                  -35.00
    6   3209  20G  21C C   N     140  142   57.12  -69.10  144.31   13.42 -117.90 -171.26    7.62
    6         21C  21C N   CA    142  143 -148.25  141.80                  141.10
    7   3210  21C  22R C   N     146  148  -75.83  -63.00   16.16    2.01   57.30  150.07   18.64
    7         22R  22R N   CA    148  149  -31.26  -41.10                   38.00
    8   3219  30M  31G C   N     215  217  -64.78  -62.40    4.43    0.60   82.20  154.00   11.64
    8         31G  31G N   CA    217  218  -37.47  -41.20                    8.50
    9   3225  36G  37Y C   N     249  251   66.97   55.90   13.08    0.99  -63.50  150.96   28.50
    9         37Y  37Y N   CA    251  252   32.54   39.50                  -43.40
   10   3226  37Y  38F C   N     261  263   61.85   58.10    4.52    0.39  -63.20  145.65   26.24
   10         38F  38F N   CA    263  264   30.38   32.90                  -44.30
   11   3229  40I  41K C   N     289  291  -96.99  -62.90   84.26    9.70  -62.90   84.26    9.70
   11         41K  41K N   CA    291  292   36.25  -40.80                  -40.80
   12   3242  53S  54S C   N     392  394   94.81 -136.60  132.03    4.52  -64.10 -145.64   18.10
   12         54S  54S N   CA    394  395 -178.86  151.20                  -35.00
   13   3244  55W  56K C   N     412  414 -106.53  -62.90   79.52    9.20  -62.90   79.52    9.20
   13         56K  56K N   CA    414  415   25.68  -40.80                  -40.80
   14   3245  56K  57S C   N     421  423   45.00   56.90   25.64    1.07  -64.10  144.09   18.18
   14         57S  57S N   CA    423  424   59.11   36.40                  -35.00
   15   3254  65A  66S C   N     478  480   80.09   56.90   25.92    2.26  -64.10  156.12   20.85
   15         66S  66S N   CA    480  481   24.83   36.40                  -35.00
   16   3256  67L  68C C   N     492  494  -88.23 -117.90   40.68    1.12  -63.00  156.42   17.52
   16         68C  68C N   CA    494  495  113.27  141.10                  -41.10
   17   3264  75R  76Y C   N     562  564  -99.10  -63.50   78.69   11.00  -63.50   78.69   11.00
   17         76Y  76Y N   CA    564  565   26.78  -43.40                  -43.40
   18   3265  76Y  77A C   N     574  576  -66.30  -62.50   20.83    3.61 -134.00  166.05   10.25
   18         77A  77A N   CA    576  577  -61.38  -40.90                  147.00
   19   3266  77A  78K C   N     579  581  137.60   56.60  121.66    7.31  -62.90  159.91   26.67
   19         78K  78K N   CA    581  582  -52.18   38.60                  -40.80
   20   3270  81G  82C C   N     611  613  -63.34  -63.00   94.56   11.56  -63.00   94.56   11.56
   20         82C  82C N   CA    613  614 -135.65  -41.10                  -41.10
   21   3271  82C  83P C   N     617  619  -55.41  -64.50   81.87    5.65  -58.70   96.39    8.23
   21         83P  83P N   CA    619  620   65.84  147.20                  -30.50
   22   3272  83P  84L C   N     624  626  -93.78  -63.50   35.55    6.55  -63.50   35.55    6.55
   22         84L  84L N   CA    626  627  -59.83  -41.20                  -41.20
   23   3282  93H  94N C   N     708  710  -63.35 -119.90   56.57    2.38  -63.20  179.59   22.44
   23         94N  94N N   CA    710  711  138.49  137.00                  -41.10
   24   3283  94N  95G C   N     716  718  126.29   82.20   64.35    1.95  -62.40  171.33   30.49
   24         95G  95G N   CA    718  719  -38.37    8.50                  -41.20
   25   3291 102K 103G C   N     770  772  -62.22  -62.40    1.96    0.28   82.20  153.38   11.70
   25        103G 103G N   CA    772  773  -43.16  -41.20                    8.50
   26   3295 106I 107G C   N     795  797  -75.05  -62.40   12.76    2.34   82.20  165.44   12.54
   26        107G 107G N   CA    797  798  -42.92  -41.20                    8.50
   27   3297 108Y 109W C   N     811  813   67.98   58.80   17.42    0.48  -63.00  145.08   25.70
   27        109W 109W N   CA    813  814   18.20   33.00                  -44.20
   28   3300 111R 112L C   N     844  846 -113.62 -108.50   90.66    4.95  -63.50   97.12   11.92
   28        112L 112L N   CA    846  847   41.99  132.50                  -41.20
   29   3306 117G 118C C   N     888  890   69.07   57.40   33.91    1.09 -117.90 -139.34    9.59
   29        118C 118C N   CA    890  891    4.17   36.00                  141.10

-------------------------------------------------------------------------------------------------

Feature 27                           : Distance restraints 5 (X-Y)             
List of the RVIOL violations larger than   :       4.5000

    #   ICSR  RESNO1/2 ATM1/2   INDATM1/2    FEAT   restr    viol   rviol   RESTR    VIOL   RVIOL
    1  10432 123.  83P O6  CG    939  623    6.72    3.00    3.72   37.23    3.00    3.72   37.23


report______> Distribution of short non-bonded contacts:


DISTANCE1:  0.00 2.10 2.20 2.30 2.40 2.50 2.60 2.70 2.80 2.90 3.00 3.10 3.20 3.30 3.40
DISTANCE2:  2.10 2.20 2.30 2.40 2.50 2.60 2.70 2.80 2.90 3.00 3.10 3.20 3.30 3.40 3.50
FREQUENCY:     0    0    0    0    1   11   18   59   81  133  130  138  157  181  153


<< end of ENERGY.

>> Summary of successfully produced models:
Filename                          molpdf
----------------------------------------
MERLU.B99990001.pdb           2104.57300

Рис. 2. Модель (зеленый цвет) после изменения положения лиганда имеет больший скор, чем в прошлый раз (2000 против 800). В новой модели отсутствует лишний бета-тяж, а лишняя альфа-спираль осталась.

А теперь заменим в лизоциме все аминокислоты на аланин и снова построим комплекс с лигандом.

In [51]:
with open("P86383.fasta", 'r') as fasta:
    strs = fasta.read().split("1\n")
    prot = strs[1].replace("\n", "")
    ala = "A"*len(prot)
with open("alala.fasta", 'w') as alala:
    alala.write(strs[0] + "1\n" + ala + "\n")
In [52]:
alignm=modeller.alignment(env)
alignm.append(file='alala.fasta', align_codes='all',alignment_format='FASTA')
## создадим модель
mdl = modeller.model(env, file='1lmp.pdb', model_segment=('FIRST:'+'A', 'LAST:'+'A'))
## и добавим в выравнивание
alignm.append_model(mdl, atom_files='1lmp.pdb', align_codes='1lmp')
alignm[0].code = 'ALA'
alignm[1].code = '1LMP'
alignm.salign()
alignm.write(file='aliala.ali', alignment_format='PIR')
SALIGN_____> adding the next group to the alignment; iteration    1
In [53]:
! cat aliala.ali
>P1;ALA
sequence::     : :     : :::-1.00:-1.00
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA----------*

>P1;1LMP
structureX:1lmp.pdb:   1 :A:+132 :A:MOL_ID  1; MOLECULE  LYSOZYME; CHAIN  A; SYNONYM  MUCOPEPTIDE N-ACETYLMURAMYLHYDROLASE; EC  3.2.1.17:MOL_ID  1; ORGANISM_SCIENTIFIC  ONCORHYNCHUS MYKISS; ORGANISM_COMMON  RAINBOW TROUT; ORGANISM_TAXID  8022; ORGAN  KIDNEY: 2.00:-1.00
KVYDRCELARALKASGMDGYAGNSLPNWVCLSKWESSYNTQATNRNTDGSTDYGIFQINSRYWCDDGRTPGAKNV
CGIRCSQLLTDDLTVAIRCAKRVVLDPNGIGAWVAWRLHCQNQDLRSYVAGCGV...*
In [54]:
with open("aliala.ali", 'r') as ali:
    seq = ali.read().split("*")
    seq[0] = seq[0][:-3] + "..."
    new = "*".join(seq)
with open("aliala.ali", 'w') as out:
    out.write(new)
In [55]:
! cat aliala.ali
>P1;ALA
sequence::     : :     : :::-1.00:-1.00
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA-------...*

>P1;1LMP
structureX:1lmp.pdb:   1 :A:+132 :A:MOL_ID  1; MOLECULE  LYSOZYME; CHAIN  A; SYNONYM  MUCOPEPTIDE N-ACETYLMURAMYLHYDROLASE; EC  3.2.1.17:MOL_ID  1; ORGANISM_SCIENTIFIC  ONCORHYNCHUS MYKISS; ORGANISM_COMMON  RAINBOW TROUT; ORGANISM_TAXID  8022; ORGAN  KIDNEY: 2.00:-1.00
KVYDRCELARALKASGMDGYAGNSLPNWVCLSKWESSYNTQATNRNTDGSTDYGIFQINSRYWCDDGRTPGAKNV
CGIRCSQLLTDDLTVAIRCAKRVVLDPNGIGAWVAWRLHCQNQDLRSYVAGCGV...*
In [56]:
## Выбираем объект для моделирования 
s = alignm[0]
pdb = alignm[1]

print s.code, pdb.code

## Создаем объект automodel
a = modeller.automodel.automodel(env, alnfile='aliala.ali', knowns= pdb.code, sequence = s.code )

a.name='mod'+s.code
a.starting_model = 1
a.ending_model = 2
a.make()
ALA 1LMP
automodel__W> Topology and/or parameter libraries already in memory. These will
                be used instead of the automodel defaults. If this is not what you
                want, clear them before creating the automodel object with
                env.libs.topology.clear() and env.libs.parameters.clear()
fndatmi_285W> Only      129 residues out of      132 contain atoms of type  CA
              (This is usually caused by non-standard residues, such
              as ligands, or by PDB files with missing atoms.)
fndatmi_285W> Only      129 residues out of      132 contain atoms of type  CA
              (This is usually caused by non-standard residues, such
              as ligands, or by PDB files with missing atoms.)

check_ali___> Checking the sequence-structure alignment. 

Implied target CA(i)-CA(i+1) distances longer than  8.0 angstroms:

ALN_POS  TMPL  RID1  RID2  NAM1  NAM2     DIST
----------------------------------------------
END OF TABLE

getf_______W> RTF restraint not found in the atoms list:
              residue type, indices:     1   122
              atom names           : C     +N
              atom indices         :   609     0

getf_______W> RTF restraint not found in the atoms list:
              residue type, indices:     1   122
              atom names           : C     CA    +N    O
              atom indices         :   609   607     0   610
fndatmi_285W> Only      129 residues out of      132 contain atoms of type  CA
              (This is usually caused by non-standard residues, such
              as ligands, or by PDB files with missing atoms.)
mdtrsr__446W> A potential that relies on one protein is used, yet you have at
              least one known structure available. MDT, not library, potential is used.
iup2crm_280W> No topology library in memory or assigning a BLK residue.
              Default CHARMM atom type assigned:  C1 -->  CT2
              This message is written only for the first such atom.
43 atoms in HETATM residues constrained
to protein atoms within 2.30 angstroms
and protein CA atoms within 10.00 angstroms
43 atoms in residues without defined topology
constrained to be rigid bodies
condens_443_> Restraints marked for deletion were removed.
              Total number of restraints before, now:     9565     8962
read_pd_403W> Treating residue type  NAG as a BLK (rigid body)
              even though topology information appears to be at least
              partially available. To treat this residue flexibly
              instead, remove the corresponding 'MODELLER BLK RESIDUE'
              REMARK from the input PDB file.
read_pd_403W> Treating residue type  NAG as a BLK (rigid body)
              even though topology information appears to be at least
              partially available. To treat this residue flexibly
              instead, remove the corresponding 'MODELLER BLK RESIDUE'
              REMARK from the input PDB file.
read_pd_403W> Treating residue type  NDG as a BLK (rigid body)
              even though topology information appears to be at least
              partially available. To treat this residue flexibly
              instead, remove the corresponding 'MODELLER BLK RESIDUE'
              REMARK from the input PDB file.


>> ENERGY; Differences between the model's features and restraints:
Number of all residues in MODEL                   :      125
Number of all, selected real atoms                :      654     654
Number of all, selected pseudo atoms              :        0       0
Number of all static, selected restraints         :     8962    8962
COVALENT_CYS                                      :        F
NONBONDED_SEL_ATOMS                               :        1
Number of non-bonded pairs (excluding 1-2,1-3,1-4):     1145
Dynamic pairs routine                             : 2, NATM x NATM cell sorting
Atomic shift for contacts update (UPDATE_DYNAMIC) :    0.390
LENNARD_JONES_SWITCH                              :    6.500   7.500
COULOMB_JONES_SWITCH                              :    6.500   7.500
RESIDUE_SPAN_RANGE                                :        0   99999
NLOGN_USE                                         :       15
CONTACT_SHELL                                     :    4.000
DYNAMIC_PAIRS,_SPHERE,_COULOMB,_LENNARD,_MODELLER :        T       T       F       F       F
SPHERE_STDV                                       :    0.050
RADII_FACTOR                                      :    0.820
Current energy                                    :         555.0652





Summary of the restraint violations: 

   NUM     ... number of restraints.
   NUMVI   ... number of restraints with RVIOL > VIOL_REPORT_CUT[i].
   RVIOL   ... relative difference from the best value.
   NUMVP   ... number of restraints with -Ln(pdf) > VIOL_REPORT_CUT2[i].
   RMS_1   ... RMS(feature, minimally_violated_basis_restraint, NUMB).
   RMS_2   ... RMS(feature, best_value, NUMB).
   MOL.PDF ... scaled contribution to -Ln(Molecular pdf).

 #                     RESTRAINT_GROUP      NUM   NUMVI  NUMVP   RMS_1   RMS_2         MOL.PDF     S_i
------------------------------------------------------------------------------------------------------
 1 Bond length potential              :     610       0      0   0.006   0.006      6.5517       1.000
 2 Bond angle potential               :     853       0      5   2.231   2.231      86.531       1.000
 3 Stereochemical cosine torsion poten:     248       0     30  76.553  76.553      235.37       1.000
 4 Stereochemical improper torsion pot:     244       0      0   0.922   0.922      5.4153       1.000
 5 Soft-sphere overlap restraints     :    1145       1      2   0.010   0.010      14.430       1.000
 6 Lennard-Jones 6-12 potential       :       0       0      0   0.000   0.000      0.0000       1.000
 7 Coulomb point-point electrostatic p:       0       0      0   0.000   0.000      0.0000       1.000
 8 H-bonding potential                :       0       0      0   0.000   0.000      0.0000       1.000
 9 Distance restraints 1 (CA-CA)      :    2232       0      0   0.203   0.203      36.672       1.000
10 Distance restraints 2 (N-O)        :    2385       0      2   0.305   0.305      87.188       1.000
11 Mainchain Phi dihedral restraints  :       0       0      0   0.000   0.000      0.0000       1.000
12 Mainchain Psi dihedral restraints  :       0       0      0   0.000   0.000      0.0000       1.000
13 Mainchain Omega dihedral restraints:     121       0      3   4.553   4.553      29.584       1.000
14 Sidechain Chi_1 dihedral restraints:       0       0      0   0.000   0.000      0.0000       1.000
15 Sidechain Chi_2 dihedral restraints:       0       0      0   0.000   0.000      0.0000       1.000
16 Sidechain Chi_3 dihedral restraints:       0       0      0   0.000   0.000      0.0000       1.000
17 Sidechain Chi_4 dihedral restraints:       0       0      0   0.000   0.000      0.0000       1.000
18 Disulfide distance restraints      :       0       0      0   0.000   0.000      0.0000       1.000
19 Disulfide angle restraints         :       0       0      0   0.000   0.000      0.0000       1.000
20 Disulfide dihedral angle restraints:       0       0      0   0.000   0.000      0.0000       1.000
21 Lower bound distance restraints    :       0       0      0   0.000   0.000      0.0000       1.000
22 Upper bound distance restraints    :       0       0      0   0.000   0.000      0.0000       1.000
23 Distance restraints 3 (SDCH-MNCH)  :     693       0      0   0.226   0.226      4.4737       1.000
24 Sidechain Chi_5 dihedral restraints:       0       0      0   0.000   0.000      0.0000       1.000
25 Phi/Psi pair of dihedral restraints:     120      17     15  27.952  61.264      33.999       1.000
26 Distance restraints 4 (SDCH-SDCH)  :      55       0      0   0.327   0.327     0.71275       1.000
27 Distance restraints 5 (X-Y)        :    1401       0      0   0.034   0.034      14.134       1.000
28 NMR distance restraints 6 (X-Y)    :       0       0      0   0.000   0.000      0.0000       1.000
29 NMR distance restraints 7 (X-Y)    :       0       0      0   0.000   0.000      0.0000       1.000
30 Minimal distance restraints        :       0       0      0   0.000   0.000      0.0000       1.000
31 Non-bonded restraints              :       0       0      0   0.000   0.000      0.0000       1.000
32 Atomic accessibility restraints    :       0       0      0   0.000   0.000      0.0000       1.000
33 Atomic density restraints          :       0       0      0   0.000   0.000      0.0000       1.000
34 Absolute position restraints       :       0       0      0   0.000   0.000      0.0000       1.000
35 Dihedral angle difference restraint:       0       0      0   0.000   0.000      0.0000       1.000
36 GBSA implicit solvent potential    :       0       0      0   0.000   0.000      0.0000       1.000
37 EM density fitting potential       :       0       0      0   0.000   0.000      0.0000       1.000
38 SAXS restraints                    :       0       0      0   0.000   0.000      0.0000       1.000
39 Symmetry restraints                :       0       0      0   0.000   0.000      0.0000       1.000



# Heavy relative violation of each residue is written to: ALA.V99990001
# The profile is NOT normalized by the number of restraints.
# The profiles are smoothed over a window of residues:    1
# The sum of all numbers in the file:   10055.5547



List of the violated restraints:
   A restraint is violated when the relative difference
   from the best value (RVIOL) is larger than CUTOFF.

   ICSR   ... index of a restraint in the current set.
   RESNO  ... residue numbers of the first two atoms.
   ATM    ... IUPAC atom names of the first two atoms.
   FEAT   ... the value of the feature in the model.
   restr  ... the mean of the basis restraint with the smallest
              difference from the model (local minimum).
   viol   ... difference from the local minimum.
   rviol  ... relative difference from the local minimum.
   RESTR  ... the best value (global minimum).
   VIOL   ... difference from the best value.
   RVIOL  ... relative difference from the best value.


-------------------------------------------------------------------------------------------------

Feature 25                           : Phi/Psi pair of dihedral restraints     
List of the RVIOL violations larger than   :       6.5000

    #   ICSR  RESNO1/2 ATM1/2   INDATM1/2    FEAT   restr    viol   rviol   RESTR    VIOL   RVIOL
    1   1970  15A  16A C   N      74   76   78.29   55.40   26.03    1.99  -62.50  155.80   31.66
    1         16A  16A N   CA     76   77   25.81   38.20                  -40.90
    2   1973  18A  19A C   N      89   91   65.57   55.40   23.97    0.87  -62.50  140.33   28.50
    2         19A  19A N   CA     91   92   16.49   38.20                  -40.90
    3   1975  20A  21A C   N      99  101   53.66   55.40    4.56    0.42  -62.50  138.21   28.08
    3         21A  21A N   CA    101  102   33.99   38.20                  -40.90
    4   1976  21A  22A C   N     104  106   63.13   55.40   11.50    0.56  -62.50  144.09   29.30
    4         22A  22A N   CA    106  107   29.68   38.20                  -40.90
    5   1991  36A  37A C   N     179  181   67.70   55.40   15.29    0.99  -62.50  147.83   30.07
    5         37A  37A N   CA    181  182   29.12   38.20                  -40.90
    6   1992  37A  38A C   N     184  186   62.52   55.40   12.09    0.51  -62.50  142.95   29.07
    6         38A  38A N   CA    186  187   28.43   38.20                  -40.90
    7   2003  48A  49A C   N     239  241   85.71   55.40   41.10    2.31  -62.50  156.85   31.69
    7         49A  49A N   CA    241  242   10.44   38.20                  -40.90
    8   2008  53A  54A C   N     264  266   88.83 -134.00  143.09    3.46  -62.50 -159.61   31.49
    8         54A  54A N   CA    266  267 -172.25  147.00                  -40.90
    9   2011  56A  57A C   N     279  281   61.43   55.40   12.47    1.23  -62.50  153.17   31.04
    9         57A  57A N   CA    281  282   49.11   38.20                  -40.90
   10   2021  66A  67A C   N     329  331   81.19   55.40   61.25    2.21  -62.50  145.60   28.84
   10         67A  67A N   CA    331  332  -17.35   38.20                  -40.90
   11   2024  69A  70A C   N     344  346  -63.20  -62.50   82.99   13.64  -68.20   90.95    7.51
   11         70A  70A N   CA    346  347 -123.89  -40.90                  145.30
   12   2028  73A  74A C   N     364  366   53.68   55.40   22.57    1.22  -62.50  154.34   31.06
   12         74A  74A N   CA    366  367   60.70   38.20                  -40.90
   13   2031  76A  77A C   N     379  381   64.91   55.40   10.41    1.24  -62.50  152.23   30.92
   13         77A  77A N   CA    381  382   42.42   38.20                  -40.90
   14   2058 103A 104A C   N     514  516   81.91 -134.00  158.87    3.61  -62.50  178.67   28.71
   14        104A 104A N   CA    516  517 -146.11  147.00                  -40.90
   15   2071 116A 117A C   N     579  581   56.03   55.40    6.66    0.35  -62.50  138.92   28.24
   15        117A 117A N   CA    581  582   31.57   38.20                  -40.90
   16   2074 119A 120A C   N     594  596 -101.87  -68.20   53.99    5.28  -62.50  149.29   22.88
   16        120A 120A N   CA    596  597  103.10  145.30                  -40.90
   17   2075 120A 121A C   N     599  601 -122.49 -134.00   14.45    0.37  -62.50 -171.07   28.69
   17        121A 121A N   CA    601  602  138.25  147.00                  -40.90


report______> Distribution of short non-bonded contacts:


DISTANCE1:  0.00 2.10 2.20 2.30 2.40 2.50 2.60 2.70 2.80 2.90 3.00 3.10 3.20 3.30 3.40
DISTANCE2:  2.10 2.20 2.30 2.40 2.50 2.60 2.70 2.80 2.90 3.00 3.10 3.20 3.30 3.40 3.50
FREQUENCY:     0    0    0    0    0    4    4   25   46   59   64   66   93   91   93


<< end of ENERGY.
read_pd_403W> Treating residue type  NAG as a BLK (rigid body)
              even though topology information appears to be at least
              partially available. To treat this residue flexibly
              instead, remove the corresponding 'MODELLER BLK RESIDUE'
              REMARK from the input PDB file.
read_pd_403W> Treating residue type  NAG as a BLK (rigid body)
              even though topology information appears to be at least
              partially available. To treat this residue flexibly
              instead, remove the corresponding 'MODELLER BLK RESIDUE'
              REMARK from the input PDB file.
read_pd_403W> Treating residue type  NDG as a BLK (rigid body)
              even though topology information appears to be at least
              partially available. To treat this residue flexibly
              instead, remove the corresponding 'MODELLER BLK RESIDUE'
              REMARK from the input PDB file.


>> ENERGY; Differences between the model's features and restraints:
Number of all residues in MODEL                   :      125
Number of all, selected real atoms                :      654     654
Number of all, selected pseudo atoms              :        0       0
Number of all static, selected restraints         :     8962    8962
COVALENT_CYS                                      :        F
NONBONDED_SEL_ATOMS                               :        1
Number of non-bonded pairs (excluding 1-2,1-3,1-4):     1177
Dynamic pairs routine                             : 2, NATM x NATM cell sorting
Atomic shift for contacts update (UPDATE_DYNAMIC) :    0.390
LENNARD_JONES_SWITCH                              :    6.500   7.500
COULOMB_JONES_SWITCH                              :    6.500   7.500
RESIDUE_SPAN_RANGE                                :        0   99999
NLOGN_USE                                         :       15
CONTACT_SHELL                                     :    4.000
DYNAMIC_PAIRS,_SPHERE,_COULOMB,_LENNARD,_MODELLER :        T       T       F       F       F
SPHERE_STDV                                       :    0.050
RADII_FACTOR                                      :    0.820
Current energy                                    :         858.7646





Summary of the restraint violations: 

   NUM     ... number of restraints.
   NUMVI   ... number of restraints with RVIOL > VIOL_REPORT_CUT[i].
   RVIOL   ... relative difference from the best value.
   NUMVP   ... number of restraints with -Ln(pdf) > VIOL_REPORT_CUT2[i].
   RMS_1   ... RMS(feature, minimally_violated_basis_restraint, NUMB).
   RMS_2   ... RMS(feature, best_value, NUMB).
   MOL.PDF ... scaled contribution to -Ln(Molecular pdf).

 #                     RESTRAINT_GROUP      NUM   NUMVI  NUMVP   RMS_1   RMS_2         MOL.PDF     S_i
------------------------------------------------------------------------------------------------------
 1 Bond length potential              :     610       0      0   0.007   0.007      8.4452       1.000
 2 Bond angle potential               :     853       1     10   2.678   2.678      125.78       1.000
 3 Stereochemical cosine torsion poten:     248       0     29  75.452  75.452      230.40       1.000
 4 Stereochemical improper torsion pot:     244       0      0   1.148   1.148      8.5706       1.000
 5 Soft-sphere overlap restraints     :    1177       1      2   0.011   0.011      16.387       1.000
 6 Lennard-Jones 6-12 potential       :       0       0      0   0.000   0.000      0.0000       1.000
 7 Coulomb point-point electrostatic p:       0       0      0   0.000   0.000      0.0000       1.000
 8 H-bonding potential                :       0       0      0   0.000   0.000      0.0000       1.000
 9 Distance restraints 1 (CA-CA)      :    2232       0      2   0.286   0.286      95.506       1.000
10 Distance restraints 2 (N-O)        :    2385       0     15   0.427   0.427      186.39       1.000
11 Mainchain Phi dihedral restraints  :       0       0      0   0.000   0.000      0.0000       1.000
12 Mainchain Psi dihedral restraints  :       0       0      0   0.000   0.000      0.0000       1.000
13 Mainchain Omega dihedral restraints:     121       1      6   6.302   6.302      56.677       1.000
14 Sidechain Chi_1 dihedral restraints:       0       0      0   0.000   0.000      0.0000       1.000
15 Sidechain Chi_2 dihedral restraints:       0       0      0   0.000   0.000      0.0000       1.000
16 Sidechain Chi_3 dihedral restraints:       0       0      0   0.000   0.000      0.0000       1.000
17 Sidechain Chi_4 dihedral restraints:       0       0      0   0.000   0.000      0.0000       1.000
18 Disulfide distance restraints      :       0       0      0   0.000   0.000      0.0000       1.000
19 Disulfide angle restraints         :       0       0      0   0.000   0.000      0.0000       1.000
20 Disulfide dihedral angle restraints:       0       0      0   0.000   0.000      0.0000       1.000
21 Lower bound distance restraints    :       0       0      0   0.000   0.000      0.0000       1.000
22 Upper bound distance restraints    :       0       0      0   0.000   0.000      0.0000       1.000
23 Distance restraints 3 (SDCH-MNCH)  :     693       0      0   0.338   0.338      10.955       1.000
24 Sidechain Chi_5 dihedral restraints:       0       0      0   0.000   0.000      0.0000       1.000
25 Phi/Psi pair of dihedral restraints:     120      22     19  34.901  67.129      99.026       1.000
26 Distance restraints 4 (SDCH-SDCH)  :      55       0      0   0.721   0.721      3.3601       1.000
27 Distance restraints 5 (X-Y)        :    1401       0      0   0.038   0.038      17.273       1.000
28 NMR distance restraints 6 (X-Y)    :       0       0      0   0.000   0.000      0.0000       1.000
29 NMR distance restraints 7 (X-Y)    :       0       0      0   0.000   0.000      0.0000       1.000
30 Minimal distance restraints        :       0       0      0   0.000   0.000      0.0000       1.000
31 Non-bonded restraints              :       0       0      0   0.000   0.000      0.0000       1.000
32 Atomic accessibility restraints    :       0       0      0   0.000   0.000      0.0000       1.000
33 Atomic density restraints          :       0       0      0   0.000   0.000      0.0000       1.000
34 Absolute position restraints       :       0       0      0   0.000   0.000      0.0000       1.000
35 Dihedral angle difference restraint:       0       0      0   0.000   0.000      0.0000       1.000
36 GBSA implicit solvent potential    :       0       0      0   0.000   0.000      0.0000       1.000
37 EM density fitting potential       :       0       0      0   0.000   0.000      0.0000       1.000
38 SAXS restraints                    :       0       0      0   0.000   0.000      0.0000       1.000
39 Symmetry restraints                :       0       0      0   0.000   0.000      0.0000       1.000



# Heavy relative violation of each residue is written to: ALA.V99990002
# The profile is NOT normalized by the number of restraints.
# The profiles are smoothed over a window of residues:    1
# The sum of all numbers in the file:   11366.2793



List of the violated restraints:
   A restraint is violated when the relative difference
   from the best value (RVIOL) is larger than CUTOFF.

   ICSR   ... index of a restraint in the current set.
   RESNO  ... residue numbers of the first two atoms.
   ATM    ... IUPAC atom names of the first two atoms.
   FEAT   ... the value of the feature in the model.
   restr  ... the mean of the basis restraint with the smallest
              difference from the model (local minimum).
   viol   ... difference from the local minimum.
   rviol  ... relative difference from the local minimum.
   RESTR  ... the best value (global minimum).
   VIOL   ... difference from the best value.
   RVIOL  ... relative difference from the best value.


-------------------------------------------------------------------------------------------------

Feature  2                           : Bond angle potential                    
List of the RVIOL violations larger than   :       4.5000

    #   ICSR  RESNO1/2 ATM1/2   INDATM1/2    FEAT   restr    viol   rviol   RESTR    VIOL   RVIOL
    1   1113  72A  73A C   N     359  361  141.13  120.00   21.13    4.80  120.00   21.13    4.80

-------------------------------------------------------------------------------------------------

Feature 13                           : Mainchain Omega dihedral restraints     
List of the RVIOL violations larger than   :       4.5000

    #   ICSR  RESNO1/2 ATM1/2   INDATM1/2    FEAT   restr    viol   rviol   RESTR    VIOL   RVIOL
    1   2148  73A  73A CA  C     362  364 -143.08 -180.00   36.92    7.38 -180.00   36.92    7.38

-------------------------------------------------------------------------------------------------

Feature 25                           : Phi/Psi pair of dihedral restraints     
List of the RVIOL violations larger than   :       6.5000

    #   ICSR  RESNO1/2 ATM1/2   INDATM1/2    FEAT   restr    viol   rviol   RESTR    VIOL   RVIOL
    1   1957   2A   3A C   N       9   11  -66.88  -62.50    4.42    0.87  -68.20  173.18   14.01
    1          3A   3A N   CA     11   12  -41.52  -40.90                  145.30
    2   1958   3A   4A C   N      14   16   68.89  -68.20  138.31   11.08  -68.20  138.31   11.08
    2          4A   4A N   CA     16   17  126.96  145.30                  145.30
    3   1970  15A  16A C   N      74   76   77.48   55.40   24.05    2.00  -62.50  156.32   31.78
    3         16A  16A N   CA     76   77   28.67   38.20                  -40.90
    4   1972  17A  18A C   N      84   86  -55.10  -62.50    7.53    1.38 -134.00 -171.97   11.60
    4         18A  18A N   CA     86   87  -42.32  -40.90                  147.00
    5   1974  19A  20A C   N      94   96   48.40  -68.20  123.51   11.65  -68.20  123.51   11.65
    5         20A  20A N   CA     96   97 -173.96  145.30                  145.30
    6   1975  20A  21A C   N      99  101  -80.84  -68.20   53.72    4.76  -62.50  135.24   21.34
    6         21A  21A N   CA    101  102   93.09  145.30                  -40.90
    7   1976  21A  22A C   N     104  106   65.61   55.40   29.75    1.12  -62.50  137.95   27.96
    7         22A  22A N   CA    106  107   10.25   38.20                  -40.90
    8   1991  36A  37A C   N     179  181   65.80   55.40   10.72    1.02  -62.50  149.37   30.37
    8         37A  37A N   CA    181  182   35.60   38.20                  -40.90
    9   1992  37A  38A C   N     184  186   61.21   55.40   14.03    0.51  -62.50  140.37   28.55
    9         38A  38A N   CA    186  187   25.43   38.20                  -40.90
   10   2003  48A  49A C   N     239  241   81.86   55.40   34.36    2.07  -62.50  155.27   31.46
   10         49A  49A N   CA    241  242   16.28   38.20                  -40.90
   11   2008  53A  54A C   N     264  266   94.08 -134.00  137.42    3.33  -62.50 -154.17   32.41
   11         54A  54A N   CA    266  267 -174.50  147.00                  -40.90
   12   2011  56A  57A C   N     279  281   61.33   55.40   12.23    1.21  -62.50  152.95   31.00
   12         57A  57A N   CA    281  282   48.89   38.20                  -40.90
   13   2021  66A  67A C   N     329  331   78.40   55.40   56.86    2.06  -62.50  143.48   28.54
   13         67A  67A N   CA    331  332  -13.80   38.20                  -40.90
   14   2025  70A  71A C   N     349  351   63.12   55.40    8.02    0.94  -62.50  149.61   30.39
   14         71A  71A N   CA    351  352   40.36   38.20                  -40.90
   15   2027  72A  73A C   N     359  361  -80.60  -62.50   44.93    6.75  -62.50   44.93    6.75
   15         73A  73A N   CA    361  362    0.22  -40.90                  -40.90
   16   2028  73A  74A C   N     364  366  -22.96  -62.50   40.99    7.35  -62.50   40.99    7.35
   16         74A  74A N   CA    366  367  -51.71  -40.90                  -40.90
   17   2029  74A  75A C   N     369  371   76.85  -62.50  146.75   25.92  -62.50  146.75   25.92
   17         75A  75A N   CA    371  372  -86.91  -40.90                  -40.90
   18   2031  76A  77A C   N     379  381  169.79 -134.00   86.37    2.85  -62.50  166.31   33.54
   18         77A  77A N   CA    381  382 -147.43  147.00                  -40.90
   19   2032  77A  78A C   N     384  386  -72.73  -62.50   32.55    5.88 -134.00  153.92    9.50
   19         78A  78A N   CA    386  387  -71.80  -40.90                  147.00
   20   2058 103A 104A C   N     514  516   80.06 -134.00  159.42    3.63  -62.50  178.82   28.59
   20        104A 104A N   CA    516  517 -148.86  147.00                  -40.90
   21   2071 116A 117A C   N     579  581   51.51   55.40    8.00    0.30  -62.50  142.87   28.92
   21        117A 117A N   CA    581  582   45.20   38.20                  -40.90
   22   2075 120A 121A C   N     599  601  -57.32  -68.20   13.07    0.86  -62.50  179.02   29.59
   22        121A 121A N   CA    601  602  138.05  145.30                  -40.90


report______> Distribution of short non-bonded contacts:


DISTANCE1:  0.00 2.10 2.20 2.30 2.40 2.50 2.60 2.70 2.80 2.90 3.00 3.10 3.20 3.30 3.40
DISTANCE2:  2.10 2.20 2.30 2.40 2.50 2.60 2.70 2.80 2.90 3.00 3.10 3.20 3.30 3.40 3.50
FREQUENCY:     0    0    0    0    0    8    3   31   48   62   57   70   91  103   82


<< end of ENERGY.

>> Summary of successfully produced models:
Filename                          molpdf
----------------------------------------
ALA.B99990001.pdb              555.06525
ALA.B99990002.pdb              858.76459

Рис. 3. Моделлеру удалось свернуть полиаланиновую цепь так, что лучший скор модели совпадает со скором из первого запуска.Модель зеленая, выравнивается хорошо, хотя, опять же, есть разночтения в элементах вторичной структуры. В принципе, это не удивительно, так как у аланина нет большого радикала и он не изгибает цепь.