If you are dealing with phosphoserine then there is a monomer called
SEP that is phosphorilated serine. pdb coordinates are attached:
regards
Garib
On 4 Sep 2007, at 23:41, U Sam wrote:
> Hi
> I am trying fit a ligand (organo phosphate) covalently bonded to
> residue Serine 250 in my structure.
> How can I connect this phosphate to Ser-O and during refinement
> (refmac and CNS), how should I mention in the ligand in the input
> and how should I number it? I use COOT as graphics.
> Thanks for suggestion.
> Sam.
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