Re: AMBER: using NAB to calculate entropy

From: David A. Case <case.scripps.edu>
Date: Wed, 6 Feb 2008 12:21:28 -0800

On Wed, Feb 06, 2008, Wang, Xuelin wrote:
>
> Is there any information about how to use NAB to calculate entropy of
> ligand-protein systems? My complex is too big for NMODE calculations.

NAB reports thermodynamics from normal mode calculations just like nmode does.
So, you just take snapshots, minimize and compute modes in the same way,
then average the results from the various snapshots. It should be pretty
simple to modify mm-pbsa or pyAmber to handle the averaging, or you can just
do it by hand.

...regards...dac 

-- 
==================================================================
David A. Case                     |  e-mail:      case.scripps.edu
Dept. of Molecular Biology, TPC15 |  fax:          +1-858-784-8896
The Scripps Research Institute    |  phone:        +1-858-784-9768
10550 N. Torrey Pines Rd.         |  skype:                 dacase
La Jolla CA 92037  USA            |    http://www.scripps.edu/case
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Received on Sun Feb 10 2008 - 06:07:10 PST
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