Mol. Weight and pI's

[J-L. Risler]

Dear all,

I would like to search a protein databank (SwissProt or PIR) with queries 
such as:

- find all the proteins whose Mol. Weights lie between 123 and 135 kDA

- find all the proteins whose (calculated) pI's lie between 5.7 and 6.1

I'm pretty sure that such a service does exist on the net ... but where?

Thank you for your help,

Jean-Loup
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Jean-Loup RISLER
risler at genetique.uvsq.fr
Universite de Versailles
45 Avenue des Etats-Unis
78035 Versailles Cedex  France
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