[gmx-users] hi

Lars Schaefer Lars.Schaefer at mpi-bpc.mpg.de
Sat Mar 25 11:38:49 CET 2006

hi santosh,
which force field to use usually dependes on your system. E.g., for DNA, 
the AMBER force field is often used. For proteins, you might want to use 
GROMOS96 or OPLS, which are quite popular these days. However, this does 
not necessarily mean that the other force fields, such as GROMACS 
(ffgmx) are worse for your particular system.
In principle, some force fields are all-atom (e.g., OPLS-AA) and some 
have united atoms for aliphatic CHn groups, e.g. ffgmx.

santosh naik wrote:

> hi friends
> i m santosh naik.friends i m new to this field so i m facing a lot of 
> problems dealing with this program.so i wants to start up with 
> simple simulations like proteins in water. my problem is which force 
> field i should use in *pdb2gmx* is it default one or some other please 
> can any one will help me to solve my problem?
> thanking you
> santosh naik
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