Hello,
Please see the Isoelectric Point calculator at the following website:
http://www.nihilnovus.com
Currently this program is quite similar to Compute pI from SwissProt, with
the added feature of being able to specify pKa values for amino acids, as
well as add modifications such as phosphorylations to the computation
while input is standard FASTA.
If you have any questions, problems using the site, or suggestions, please
email me with these concerns.
sos