load=1D5Y
color cpk
cartoon 50
wireframe 50
cpk 60
background [240,240,240]
define ~2'_ribose_O (*.O5' or *.O4' or *.O3')
define ~O_in_phospho (*.OP1 or*.OP2)
define ~N_in_bases (DNA and *.N?)
zoom 90
pause
restrict dna
cartoon off
rotate X 90
zoom 140
cpk off
pause
select ~2'_ribose_O
cpk 150
pause 
cpk off
select ~O_in_phospho
cpk 150
pause
cpk off
select ~N_in_bases
cpk 150