The link http://www.sdsc.edu/ResTools/biotools/biotools16.html
contains very useful tools which may be your interest.
Best of luck.
"R. Jayakumar" wrote:
> Does anyone know about any website or package which can calculate the
> composition and/or the molecular weight of a given protein sequence. It
> should also deduct the water molecules removed during the formation of the
> peptide bond.
> thanking you