[gmx-users] Gromacs force field discussion

David van der Spoel spoel at xray.bmc.uu.se
Sat Mar 1 09:07:17 CET 2008

Reay, Andrew wrote:
> Hi, 
> I am trying to find out why the Gromacs force field is no longer recommended for use.  I've searched the mailing list archives for quite awhile to find the discussion but have been unsuccessful.  Can anybody tell me where to find that discussion?  Thanks very much.
The never has bee a GROMACS force field, although we named it such to 
avoid confusion with official "GROMOS" force fields. What used to be 
called the GROMACS force field was basically GROMOS87 + changes due to 
Van Buuren & Berendsen (J.Phys.Chem. 97 [1993] 9206) plus changes on 
aromatic groups from an unpublished paper from the Van Gusteren group 
(these parameters are given in my paper in J.Biomol. NMR  8 (1996) 
p.229). This is described in the manual. In other words there is no good 
description of ths force field in a single paper. For good reasons the 
Van Gunsteren group have updated their GROMOS force field on a number of 
occasions, and these force field are now supported in GROMACS, along 
with a few others. Although it is still possible to use the old 
parameter set, please do not call it "The GROMACS force field", but use 
the description above. Most referees fro scientific papers will (should) 
raise their eyebrows when reading that this parameter set was used, so 
this is another reason to shy away from it.

> Andy
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David van der Spoel, Ph.D.
Molec. Biophys. group, Dept. of Cell & Molec. Biol., Uppsala University.
Box 596, 75124 Uppsala, Sweden. Phone:	+46184714205. Fax: +4618511755.
spoel at xray.bmc.uu.se	spoel at gromacs.org   http://folding.bmc.uu.se

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