load https://files.rcsb.org/download/1I3J.pdb
select all
cartoons
cpk 0
wireframe 0
color structure
select water
cpk 100
color red
set echo top center
font echo 20 bold
color echo [199, 21, 133]
echo the entire model
define set1 *.O2' and dna
define set2 *.OP? and dna
define set3 *.N? and dna
pause

restrict none
select dna
wireframe 20
color cpk
echo dna wireframe
pause

restrict none
select dna
wireframe 20
color cpk
select set1
cpk 120
echo dna wireframe, O2' cpk 120 (set1)
pause

restrict none
select dna
wireframe 20
color cpk
select set2
cpk 120
echo dna wireframe, OP cpk 120 (set2)
pause

restrict none
select dna
wireframe 20
color cpk
select set3
cpk 120
echo dna wireframe, N cpk 120 (set3)
pause