[gmx-users] force field parameter for ligands

[Mark Abraham]

Zhanglin Ni wrote:
> Dear all,
> where do you usually get topolgy for small molecule ligand or do it 
> manually? Dundee PRODRG Server seems to be capable of making .top for 
> ffgmx only but not new ones like ffG53a6,etc. Thanks

Search. There's a million posts on this mailing list pointing out that 
there's another version of PRODRG that does some other force fields.

Mark