[gmx-users] produce charrmm topology

[Justin Lemkul]

On 8/2/16 2:35 AM, a.omidi at shirazu.ac.ir wrote:
> ​Hi
> I have produced a ligand by ATB
> now I want to run it with charmm36 ff
> cold you tell me How I can convert gromos topology to charmm topology?

You can't.  GROMOS and CHARMM use a fundamentally different form (united-atom 
vs. all-atom) and have very different parametrization strategies.  If you want a 
CHARMM topology, generate it using e.g. https://cgenff.paramchem.org/

-Justin

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Justin A. Lemkul, Ph.D.
Ruth L. Kirschstein NRSA Postdoctoral Fellow

Department of Pharmaceutical Sciences
School of Pharmacy
Health Sciences Facility II, Room 629
University of Maryland, Baltimore
20 Penn St.
Baltimore, MD 21201

jalemkul at outerbanks.umaryland.edu | (410) 706-7441
http://mackerell.umaryland.edu/~jalemkul

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