Dear Amber Community
 
I have a very stupid question. I want to perform QM/MM simulation on one
protein-ligand system. The system, I have been dealing with, needs water
molecules for the reaction chemistry in the active site. I have been
considering three different approaches for the same. 
 
 
1.   Minimize and equilibrate the system with MM and then directly start
with QM/MM production run
2.   Minimize with MM and further processing with QM/MM potentials.
3.   Start QM/MM processing directly from beginning. 
 
Although, Approach-3 looks to be very convenient, at early stage it is very
difficult to pin-point the water molecules, to be included in QM region.
 
I am very new to QM/MM simulation. I would be grateful to you if you could
suggest me the right approach. 
 
Regards
 
Pankaj
 
===============================================================
If your ship doesn't come in, swim out to it...Jonathan Winters
===============================================================
Pankaj R. Daga                 |  
Department of Med. Chemistry   |  e-mail:  pdaga_at_olemiss.edu
417 Faser Hall,                |  fax:          +1-662-915-5638 
University of Mississippi      |  phone:        +1-662-915-1853
University, MS, 38677-1848     |  
===============================================================
 
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Received on Sun Dec 16 2007 - 06:07:22 PST