echo This is a Rasmol script to demonstrate tRNA structure 1f7v
load H:\term3\credit\pdb1f7v.ent
restrict rna
define helix1 901-907 or 966-972
define helix2 910-912 or 923-925
define helix3 927-931 or 939-943
define helix4 949-953 or 961-965
define stems helix1, helix2, helix3, helix4
echo tRNA helices are defined as helix1, helix2, helix3, helix4
echo All helices are defined as "stems"

define loop1 913-922
define loop2 932-938
define loop3 944-948
define loop4 954-960
define loops loop1, loop2, loop3, loop4
echo tRNA loops are defined as loop1, loop2, loop3, loop4
echo All loops are defined as "loops"

define knot1 901, 972
define knot2 910, 925
define knot3 927, 943
define knot4 949, 965
define knots knot1, knot2, knot3, knot4
echo tRNA knots are defined as knot1, knot2, knot3, knot4
echo All knots are defined as "knots"

define lends 973-976
echo unpaired end is defined as lends

define anticodon 934-936
echo anticodon is defined as anticodon 

restrict rna
rotate y -50

pause
select rna
backbone 75
wireframe off
select helix1
backbone 125
wireframe on
color pink
select helix2
backbone 125
wireframe on
color red
select helix3
backbone 125
wireframe on
color orange
select helix4
backbone 125
wireframe on
color yellow
echo helices coloured in warm coloures

pause
select knots
wireframe 125
color green
echo knots coloured green

pause
select anticodon
cpk 250
color red
restrict rna
echo anticodon colored red