[Chimera-users] Problem with HEADER keyword in PDBs

Elaine Meng meng at cgl.ucsf.edu
Tue Jan 14 08:51:26 PST 2014

Hi Thomas,
Well, I wouldn't call it a problem… it just happens that Pymol does one thing and Chimera does another.  Chimera "knows" they are multiple chains, however.  If you want the chains in different colors, for example, you could use the command:  

rainbow chain

You can also specify the colors to use in this command.

It doesn't have anything to do with the HEADER.  This file only has one HEADER line, and it just contains the name of a PDB file.  The chain IDs are in the ATOM lines.
I hope this helps,
Elaine C. Meng, Ph.D. 
UCSF Computer Graphics Lab (Chimera team) and Babbitt Lab
Department of Pharmaceutical Chemistry
University of California, San Francisco

On Jan 13, 2014, at 5:18 PM, Thomas Hrabe <thrabe at sanfordburnham.org> wrote:

> Hi everyone,
> I believe I found a problem with the >HEADER< keyword in PDB files.
> Some programs may create pdbs with the header keyword specifying the origin or a name of a chain or other metadata with the coordinates below.
> PyMol understands this keyword and colors chains that have identical chain ID (see example attached) in multiple colors while chimera interprets all as one chain.
> Thanks,
> Thomas

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