load http://prodata.swmed.edu/DrugDomain/af_mmcifs/P20813.cif
orient
select P20813_nD1, resi 6-490
color blue, P20813_nD1
select resn PB2
select br. all within 5 of sele
show sticks, sele
color magenta, sele
hide (organic)
hide (inorganic)
select resn PB2
show sticks, sele
util.cbag sele
select resn HOH
hide (sele)
deselect