load 1i3j
define set1 *.O?' and dna
define set2 *.OP?
define set3 *.N? and dna
set echo top center

select all
cpk off
wireframe off
cartoon
echo DNA and protein
pause

restrict dna
wireframe on
cartoon off
cpk off
echo DNA wireframe
pause

select all
cpk off
select set1
cpk 200
echo Set1
pause

select all
cpk off
select set2
cpk 200
echo Set2
pause

select all
cpk off
select set3
cpk 200
echo Set3
pause