Bogos,
if computer time is not an issue, you might want to think about a
replica-exchange type approach. Some people have also combined this
with an implicit solvent approach in which case it becomes computationally
more efficient.
Best wishes,
Marc
>>> Bogos Agianian said:
 >> Dear Amber users,   
 >> Starting from a crystal structure of a protein-peptide complex, I try to mo
     del  
 >> the binding of the same peptide to very similar isoforms of the protein  
 >> (created by homology modeling). The starting structure of the peptide is th
     e  
 >> one obtained after 3D-superposition of the homology models onto the crystal  >> structure of the complex.  
 >> My question is what is a good protocol in Amber 7.0 to sample as much  
 >> conformational space of the peptide as posible so that it gets un-stuck of 
     its  
 >> conformation in the crystal.    
[...]
 >> ..but the peptide is not moving a lot.  Is there a good way to give it a  
 >> kick?   
-- 
 Dr. Marc Baaden  - Institut de Biologie Physico-Chimique, Paris
 mailto:baaden.smplinux.de      -      http://www.marc-baaden.de
 FAX: +33 15841 5026  -  Tel: +33 15841 5176  ou  +33 609 843217
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Received on Wed Mar 02 2005 - 13:53:01 PST