reset

load=1tro

define set1 *.O?' and dna
define set2 *.OP1 or *.OP2'  and dna
define set3 *.N? and dna

color background white

restrict none
select all
ribbons
color chain
pause

restrict none
select dna
wireframe
color cpk
pause

restrict none
select dna
wireframe
color cpk
select set1
cpk 100
color cpk
pause

restrict none
select dna
wireframe
color cpk
select set2
cpk 100
color cpk
pause

restrict none
select dna
wireframe
color cpk
select set3
cpk 100
color cpk
pause