I'm working with a pdb structure that's icosahedral. The surface is tiled with hexamers and pentamers of its single chain. The unit cell contains 4 chains, 3 from a hexamer and 1 from a pentamer. I need to compare the pentamer inter-chain contacts to those in the hexamer, so I immediately thought of Chimera.
 
I can generate a pretty picture of hexamers & pentamers on screen, but what I can't seem to figure out how to do is to save additional coordinates for the other units of the pentamer, analogous to saving additional coordinates when you fill out a unit cell using the "Higher-order Structure" utilities.
 
Thanks for your help!
 
Irene Newhouse
Res. Corp. U of Hawaii

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