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[Bernard Murray, PhD]

In article <000901bf2e92$2ed86620$397423c8 at default>, herico at telcel.net.ve
("Heriberto Correia") wrote:

> Hi.
> Does Anybody know How to calculate the isoelectric point
> from a polypeptide using only the aminoacid composition?
> Thank you in advance
> Heriberto Correia

[Trimmed to remove wasteful HTML - Yuk!]

The mighty ExPASy has a web page for this;
    http://www.expasy.ch/tools/#primary

If you want to do it locally Arthur David Olson supplies the C code;
    http://rex.nci.nih.gov/RESEARCH/basic/lec/software/index.htm

(if this does not compile for you I have a fix)

   Bernard

-- 
Bernard P. Murray, PhD
bpmurray at cgl . ucsf . edu
Department of Cellular & Molecular Pharmacology, UCSF