local charges of peptide chain

Wolfgang Schechinger wolfsc at ibms.sinica.edu.tw
Wed Nov 28 01:43:25 EST 2001

Hi all, 

I would like to compare local charges of related proteins at different pH 
(e.g. if Tyrosines are likely to be protonated or not at a certain pH). 
A series of plots showing LOCAL positive/negative/zero charge is what I would 
like to get. But I am NOT looking for a standard isoelectric plot since that 
would only refer to the overall net charge.

Before I start programming, is anyone aware of such a tool?

Thanks and Regards, 


Dr. Wolfgang Schechinger
Institute of Biomedical Sciences
Academia Sinica, Taipei, Taiwan R.O.C.
e mail wolfsc at ibms dot sinica dot edu dot tw


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