Quoting Mattia Sturlese <[EMAIL PROTECTED]>:

> Dear all,
>      I have a protein with an oxidated Cys( to sulfinic acid) , this
> residue is not present in the residue database. I use PRODGR to obtain
> the .itp file of  the residue but I don't start grompp ....

Be aware that the charges given by PRODRG are often unsatisfactory, and usually
(if not always) require refining.

>
> How I insert this residue in the rtp file?? I trying  insert the
> parameters manually but I have explicit data of angles, bond, dihedral
> and impropers....but ffG43a use Gromos Type definition as ga_XX or
> gb_XX......  Where i find a database of this gromos type? Or How I can
> insert my .itp file ?

Use the other entries in the .rtp file as a guide.  Bonded parameters are found
in ffG43a1bon.itp.

-Justin

>
> Thanks folk!!
> Mattia Sturlese
>
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========================================

Justin A. Lemkul
Graduate Research Assistant
Department of Biochemistry
Virginia Tech
Blacksburg, VA
[EMAIL PROTECTED] | (540) 231-9080
http://www.bevanlab.biochem.vt.edu/Pages/Personal/justin/

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