C8917 Sigma

Cystatin from chicken egg white

lyophilized powder

Synonym: Cysteine protease inhibitor



Unstable to freezing unless in the presence of 20% glycerol or buffered to pH 7.5.


Package size based on protein content.


Inhibitor of cysteine proteases, including papain and dipeptidyl peptidase III. Effective concentration equimolar with protease. A docking model has been proposed for the mechanism of inhibition of papain.1

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