Recombinant Human CTSS Protein (Leu115-Ile331), His tagged

• Cat.No.: CTSS-1893H
• Product Overview: Recombinant human CTSS (Leu115-Ile331) fused with His tag was expressed in E. coli.

Specification

• Description: Cathepsin S (CTSS), one of the lysosomal proteinases, has many important physiological functions in the nervous system, especially in process of extracellular matrix degradation and endocellular antigen presentation. CTSS is synthesized as inactive precursor of 331 amino acids consisting of a 15-aa signal peptide, a propeptide of 99 aa, and a mature polypeptide of 217 aa. It is activated in the lysosomes by a proteolytic cleavage of the propeptide. Cathepsin S is expressed in the lysosome of antigen presenting cells, primarily dendritic cells, B-cells and macrophages. Compared with other lysosomal cysteine proteases, cathepsin S has displayed some unique characteristics. Cathepsin S is most well known for its critical function in the proteolytic digestion of the invariant chain chaperone molecules, thus controlling antigen presentation to CD4+ T-cells by major histocompatibility complex (MHC) class II molecules or to NK1. 1+ T-cells via CD1 molecules. Cathepsin S also appears to participate in direct processing of exogenous antigens for presentation by MHC class II to CD4+ T-cells, or in cross-presentation by MHC class I molecules to CD8+ T-cells. In addition, although direct evidence is still lacking, in its secreted form cathepsin S is implicated in degradation of the extracellular matrix, which may contribute to the pathology of a number of diseases, including arthritis, atherosclerosis, neurological diseases and chronic obstructive pulmonary disease.
• Source: E. coli
• Species: Human
• Tag: His
• Form: Lyophilized powder/frozen liquid
• Molecular Mass: 25.5 kDa
• Protein length: Leu115-Ile331
• Purity: >90% as determined by SDS-PAGE
• Notes: For research use only.
• Storage: Use a manual defrost freezer and avoid repeated freeze thaw cycles. Store at 2 to 8 centigrade for one week. Store at -20 to -80 centigrade for twelve months from the date of receipt.
• Storage Buffer: Supplied as solution form in PBS, pH 7.5 or lyophilized from PBS, pH 7.5.
• Reconstitution: Reconstitute in sterile water for a stock solution.
• Shipping: They are shipped out with dry ice/blue ice unless customers require otherwise.

Gene Information

• Gene Name: CTSS cathepsin S [ Homo sapiens (human) ]
• Official Symbol: CTSS
• Synonyms: CTSS; cathepsin S; MGC3886; FLJ50259
• Gene ID: 1520
• mRNA Refseq: NM_001199739
• Protein Refseq: NP_001186668
• MIM: 116845
• UniProt ID: P25774