reset
rotate 90
background white
cpk off
wireframe off
backbone off
ribbons off
cartoons
restrict dna or protein
color chain
select dna
cartoons off
wireframe 50
color cpk
delay 1
# complex DNA-protein selected

restrict dna
delay 1
# DNA selected

define oxygen_in_desoxyribose *.o3' or *.o4' or *.o5'
select oxygen_in_desoxyribose 
cpk 150
delay 1
# oxygen in desoxyribose selected

select oxygen_in_desoxyribose 
cpk off
delay 1
# oxygen in desoxyribose deselected

define oxygen_in_phosphate *.op1 or *.op2
select oxygen_in_phosphate
cpk 150
delay 1
# oxygen in phosphate selected

select oxygen_in_phosphate
cpk off
delay 1
# oxygen in phosphate deselected

define nitrogen_in_nucleotide *.n1 or *.n2 or *.n3 or *.n4 or *.n6 or *.n7 or *.n9
select nitrogen_in_nucleotide
cpk 150
delay 1
# nitrogen in nucleotide selected

cpk off
select protein
cartoons
# nitrogen in nucleotide deselected
## complex DNA-protein selected