> As we are known, If we want to get the parameters of samll drug's
> molecules,we can use the "antechamber" of AmberTool to build the
> file of *.frcmod. Then we could be easy to obtain the files of
> "parmtop and inpcrd".
>
> But the animo acid is not the completely molecule at "C- and N-"
> terminator. If I have the "LYS-epsilon-CH3", How should I build this
> paramters for it? Could somebody give me some fit methods?