load ./step13.pdb
color cpk
wireframe 50
cpk off
background [240,240,240]
center RNA
zoom 120
cartoons 50
write image 1000 1000 png fig_19.png
load ./step14.pdb
color cpk
wireframe 50
cpk off
background [240,240,240]
center RNA
zoom 130
cartoons 50
write image 1000 1000 png fig_20.png