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--- Bret Church <[EMAIL PROTECTED]> escreveu:
> Hi Dan,
> As at 2 January 2006 there were 236 structures with
> at least one chain containing 5 or more consecutive
> Histidine residues. Atom records were used in order
> to extract out the sequences of the
> polypeptides.
Is such a search already implemented in a server? This
would be particularly interesting to those who do
homology modeling. As far as I know, most online tools
(such as the FASTA server at EBI) browse for sequences
by comparing them to the SEQRES record, and therefore
if someones search for a His-tag they will return a
huge list of PDB codes which do not actually have
these residues modeled in the structure.
Lucas
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