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Reconstitute with 0.2 mL of distilled water to yield a concentration of 500 µg/mL.
The cystatin superfamily encompasses proteins that contain multiple cystatin-like sequences. Some of the members are active cysteine protease inhibitors, while others have lost or perhaps never acquired this inhibitory activity. There are three inhibitory families in the superfamily, including the type 1 cystatins (stefins), type 2 cystatins, and kininogens. This gene encodes a stefin that functions as a cysteine protease inhibitor, forming tight complexes with papain and the cathepsins B, H, and L. The protein is one of the precursor proteins of cornified cell envelope in keratinocytes and plays a role in epidermal development and maintenance. Stefins have been proposed as prognostic and diagnostic tools for cancer.
⚠WARNING: This product can expose you to chemicals including mercury, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Protein Aliases: cystatin A (stefin A); cystatin AS; Cystatin-A; Cystatin-AS; Stefin A; Stefin-A
Gene Aliases: AREI; CSTA; PSS4; STF1; STFA
UniProt ID: (Human) P01040
Entrez Gene ID: (Human) 1475
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