load 1LRR.pdb
select all
color cpk 
wireframe 40
cartoons off
cpk off
restrict *D or *E or *F

pause

restrict dna
wireframe 40
cpk off
define set1 *.o4*
define set2 *.OP?
define set3 *.N? and dna
restrict *E or *F


pause

select set1
cpk 200
color green
restrict *E or *F


pause

select set1
color cpk
cpk off
select set2
cpk 200
color red
restrict *E or *F


pause

select set2
color cpk
cpk off
select set3
cpk 200
color blue
restrict *E or *F