AMBER Archive (2009)

Subject: Re: [AMBER] spc.itp for the Amber force field

From: Alan (
Date: Wed Jun 03 2009 - 10:38:56 CDT

Hi Rebeca,
I guess you're confusing things here because there's no SPC water in Amber,
but there's SPCE. Besides (although I don't remember the reference, but
google and lists are your friend), SPCE water is the best water model AFAIK.

And if you allow me a suggestion, why don't you try acpypi instead of

You may find some reasons for that here:

I hope it can helps.


On Wed, Jun 3, 2009 at 15:46, rebeca <> wrote:

> Hi,
> I am trying to simulate a system using the parameters for ions developed by
> Joung et al. and implemented in Amber (frcmod.ionsjc_spce).
> I have the topology and the crd file. Now, I want to obtain the topology
> for Gromacs using, so I must change the default parameters (for
> tip3p) included in
> I have seen that in the .tar file ffamber_v4.0 there is no a corresponding
> itp file for spc model of water in amber, so what parameters should I
> include for the section of bondtypes, angletypes, atoms, bonds, angles,
> settles,...? Those corresponding to the SCP in Gromacs directly?
> Thank you very much for your help.
> Best wishes,
> --
> Rebeca García Fandiño
> Molecular Modelling and Bioinformatics Group
> Institut de Reçerca Biomèdica
> Parc Cientific de Barcelona
> 08028 Barcelona
> _______________________________________________
> AMBER mailing list

Alan Wilter S. da Silva, D.Sc. - CCPN Research Associate
Department of Biochemistry, University of Cambridge.
80 Tennis Court Road, Cambridge CB2 1GA, UK.
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