#Остатки 2'-дезоксирибозы, полярные                                      
define a :*.O?' and dna                           
select within(3.5, a) and protein and not carbon  

#Остатки 2'-дезоксирибозы, неполярные                                           
define b :*.C5' or :*.C4' or :*.C3' or :*.C2' or :*.C1'
select within(4.5, b) and protein and carbon           

#Остатки фосфорной кислоты, полярные
define c :*.OP? and dna
select within(3.5, c) and protein and not carbon

#Остатки фосфорной кислоты, неполярные
define d :*.OP? and dna
select within(4.5, d) and protein and carbon

#Большая бороздка, полярные
define e [DT]:*.O4 or [DG]:*.O6 or [DA]:*.N6 or [DA]:*.N7 or [DG]:*.N7 or [DC]:*.N4
select within(3.5, e) and protein and not carbon

#Большая бороздка, неполярные
define f [DT]:*.C4 or [DG]:*.C6 or [DA]:*.C6 or [DA]:*.C8 or [DG]:*.C5 or [DC]:*.C4 or [DT]:*.C5 or [DT]:*.C6 or [DT]:*.C7 or [DG]:*.C8 or [DA]:*.C5 or [DC]:*.C5 or [DC]:*.C6
select within(4.5, f) and protein and carbon

#Малая бороздка, полярные
define g [DA]:*.N1 or [DA]:*.N3 or [DA]:*.N9 or [DT]:*.N1 or [DT]:*.N3 or [DT]:*.O2 or [DG]:*.N2 or [DG]:*.N3 or [DG]:*.N9 or [DC]:*.N1 or [DC]:*.O2
select within(3.5, g) and protein and not carbon

#Малая бороздка, неполярные
define h [DA]:*.C2 or [DA]:*.C4 or [DT]:*.C2 or [DG]:*.C2 or [DG]:*.C4 or [DC]:*.C2
select within(4.5, h) and protein and carbon