Hi Hunter,

> 1. how to find those hydrophobic residues
PISA will also tell you this - you just need to look at the
hydrophobic residues which are highlighted and have a buried surface
area (BSA) value in the PISA output. You can take these residues and
plot them in your favourite pdb viewer (CCP4mg, PyMol, etc)

As for confirming their importance - the only definative test IS
site-directed mutagenesis. However, before you dash off and order your
primers, Rosetta/Robetta has an in-silico alanine scanning
mutatgenesis server which may help direct your efforts:
http://robetta.bakerlab.org/alascansubmit.jsp

HTH

David


2009/8/19 Haitao ZHANG <crystalc...@gmail.com>:
> Hi, everybody
> I have a crystal structure as homodimer, from which residues in the dimer
> interface need to be identified. Using PISA on the EBI website,
> residues involved in forming hydrogen bonds, salt bridges, disulfide bonds
> and covalent bonds could be identified. But hydrophobic interaction could
> also play an essential role on the dimer stablization. So does anybody know:
> 1. how to find those hydrophobic residues (software or on-line-server)
> 2. how to confirm that whether they play a role in the dimerization, except
> for site-mutation.
>
> Thanks a lot!
>
> Hunter



-- 
============================
David C. Briggs PhD
Father & Crystallographer
http://drdavidcbriggs.googlepages.com/home
Skype: DocDCB
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