I changed the way I have presented these models- rather than provide a link to a repository of structural data, I have used the crystallographic data to make 3D files which sit locally on this site. That just feels more satisfactory to me. The models may take a second or two to load.
space filling model.
ATP
Drag over the structures to rotate.
ball & stick model.
ball & stick model.
NADH
caffeine
stick model.
quinone
cholesterol
ball & stick model.
space filling model.