Read the documentation on the site where you got the ffamber ports:
http://chemistry.csulb.edu/ffamber/index.html#usage
The Amber force fields are particular about residue nomenclature.
-Justin
Quoting Liu Shiyong <[EMAIL PROTECTED]>:
> Hi,
>
> I install amber force filed according to source
Hi,
I install amber force filed according to source:
http://chemistry.csulb.edu/ffamber/index.html
But , I run pdb2gmx, I got a problem.
Program pdb2gmx, VERSION 3.3.1
pdb2gmx -ignh -ff amber99 -f r-l_1.pdb
Opening library file /export/apps/gromacs-3.3.1-Amber
/share/gromacs/top//ffamber99
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