select *; spacefill 23%; wireframe 0.15; color cpk-ball and stick
select *; spacefill 0%; wireframe 0.15; color cpk-wireframe
select *; spacefill only; color cpk-spacefill
select nucleic; cartoon only;color structure;delete solvent;-secondary structure
~<h5>A DNA molecule contains two anti&#8208;parallel DNA polymer chains arranged in a double helix. One chain is 5’&#8208;>3’ in a given direction and the other chain is 3’&#8208;>5’ in that same direction. The sugar&#8208;phosphate backbone is on the outside of the helix and the planar nitrogenous bases are on the inside perpendicular to the helix axis. The bases are base&#8208;paired. A pairs with T and G pairs with C. Base&#8208;pairing occurs via hydrogen bonding </h5>
hbonds calculate; hbonds on-HBonds on
hbonds off-HBonds off
