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ExPASy Logo ProtParam tool


ProtParam (References) is a tool which allows the computation of various physical and chemical parameters for a given protein stored in Swiss-Prot or TrEMBL or for a user entered sequence. The computed parameters include the molecular weight, theoretical pI, amino acid composition, atomic composition, extinction coefficient, estimated half-life, instability index, aliphatic index and grand average of hydropathicity (GRAVY) (Disclaimer).


Please note that you may only fill out one of the following fields at a time.

Enter a Swiss-Prot/TrEMBL accession number (AC) (for example P05130) or a sequence identifier (ID) (for example KPC1_DROME):

Or you can paste your own sequence in the box below:


Last modified 22/Jan/2003 by ELG
ExPASy Home page Site Map Search ExPASy Contact us Swiss-Prot Proteomics tools
Hosted by NCSC USMirror sites:Canada China Korea Switzerland Taiwan