Cystatin SN (CST1) (NM_001898) Human Recombinant Protein

Specifications

Product Data
Species	Human
Expression Host	HEK293
Expression cDNA Clone or AA Sequence	Protein Sequence (showhide) Trp21-Ser141
Tag	C-His
Predicted MW	15.4 kDa
Concentration	lot specific
Purity	>95% as determined by SDS-PAGE and Coomassie blue staining
Buffer	Lyophilized from a 0.2 um filtered solution of 20mM MES, 150mM NaCl, pH 5.5.
Storage	Lyophilized protein should be stored at < -20°C, though stable at room temperature for 3 weeks. Reconstituted protein solution can be stored at 4-7°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.
Stability	Stable for at least 6 months from date of receipt under proper storage and handling conditions.
Endotoxin	< 0.1 EU per µg protein as determined by LAL test
Reference Data
RefSeq	NP_001889
Locus ID	1469
UniProt ID	P01037
Cytogenetics	20p11.21
Summary	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 the kininogens. The type 2 cystatin proteins are a class of cysteine proteinase inhibitors found in a variety of human fluids and secretions, where they appear to provide protective functions. The cystatin locus on chromosome 20 contains the majority of the type 2 cystatin genes and pseudogenes. This gene is located in the cystatin locus and encodes a cysteine proteinase inhibitor found in saliva, tears, urine, and seminal fluid. [provided by RefSeq, Jul 2008]

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