[Molvis-list] pdb-l: working with a file with two models superimposed
msauder at sgxpharma.com
Mon May 12 13:42:06 EDT 2008
From: pdb-l-bounces at sdsc.edu [mailto:pdb-l-bounces at sdsc.edu] On Behalf
Of Jeff Cohlberg
Sent: Monday, May 12, 2008 10:27 AM
To: Molecular Visualization,especially in education with freeware
Cc: pdb-l at sdsc.edu
Subject: pdb-l: working with a file with two models superimposed
One of my students is trying to work with file 2CLC, " CRYSTAL STRUCTURE
ANALYSIS OF A FLUORESCENT FORM OF H-RAS P21 IN COMPLEX WITH GTP (2)" in
The file is one of a series from a paper on kinetic studies of a protein
crystal using a fluorometer combined with X-ray diffraction. The
subject is a single polypeptide chain. The file has two models. One
chain is designated Chain X Model 1, and the other Chain X Model 2.
They have the same sequence and residue numbering.
The images of the structure show two chains not quite superimposed on
each other. How can you select one of the two models for display? The
command "select :X" selects both models.
Clicking on an atom for model 1 identifies it as "N ;A 872 Group MET
111 Chain: X Model: 1"
Clicking on an atom for model 2 identifies it as "N ;B 872 Group MET
111 Chain: X Model: 2"
Typing "Select :A" or "Select :B" results in no atoms being selected.
Does anyone know how to select and work with a single model (in Rasmol
or another program)?
Jeffrey A. Cohlberg, Professor
Department of Chemistry and Biochemistry California State University,
Long Beach Long Beach, CA 90840
562-985-4944 fax 775-248-1263
cohlberg at csulb.edu
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