219364

Cathepsin B, Human Liver

Cathepsin B, Human Liver, CAS 9047-22-7, is a purified native cathepsin B from human liver, purified by affinity chromatography. Upregulated in many types of tumors.

• 别名: Cathepsin B, Human Liver
• CAS号: 9047-22-7
• EC 号: 3.4.22.1 (BRENDA, IUBMB)
• 分類程式碼代碼: 12352202
• NACRES: NA.77

属性

• 生物源: human liver
• 品質等級: 100
• 化驗: >95% (SDS-PAGE)
• 形狀: liquid
• 比活性: ≥50 units/mg protein
• 純化經由: affinity chromatography
• 製造商／商標名: Calbiochem^®
• 儲存條件: OK to freeze; avoid repeated freeze/thaw cycles
• 技術: activity assay: suitable
• pH值範圍: 3.5—6.0
• 適合性: suitable for molecular biology
• 應用: life science and biopharma
• 運輸包裝: wet ice
• 儲存溫度: −70°C
• 基因資訊: human ... CTSB(1508)

说明

一般說明

Research area: Cell Signaling

Cathepsin B, Human Liver, is a native cathepsin B from human liver, purified by affinity chromatography. Cathepsin B is a lysosomal protease with endo/exopeptidase and a carboxydipeptidase activity. It is also known as cysteine cathepsin and belongs to the C1 family of papain-like enzymes. Cathepsin B like H, L, C, X, F, O and V is ubiquitously expressed in human tissues.

Optimal pH: 3.5-6.0.

應用

Cathepsin B, Human Liver has been used to assess its linker cleavage or proteolytic activity using an LC/MS MRM-based quantitation method.

生化／生理作用

Cathepsin B facilitates non-specific, bulk proteolysis within the acidic conditions of the endosomal/lysosomal compartment. Here, they break down both intracellular and extracellular proteins. Upregulation and secretion of cathepsin B have been shown to occur in many types of tumors and to correlate positively with their invasive and metastatic capabilities. Cathepsin B is shown to facilitate tumor invasion by dissolving extracellular barriers.

包裝

Please refer to vial label for lot-specific concentration.

警告

Toxicity: Standard Handling (A)

單位定義

One unit is defined as the amount of enzyme that will hydrolyze 1.0 µmol Z-RR-βNA per min at 40°C, pH 6.0 in the presence of DTT.

外觀

In 50 mM sodium acetate buffer, 1 mM EDTA, pH 5.0.

準備報告

Prepared from tissue of individuals that have been shown by certified tests to be negative for HBsAg and for antibodies to HIV and HCV.

重構

Following initial thaw, aliquot and freeze (-70°C).

其他說明

Kostoulas, G., et al. 1999. FEBS Lett. 455, 286.
Berquim, I.M., and Sloane, B.F. 1996. Adv. Exp. Med. Biol.389, 281.
Keppler, D., et al. 1994. Biochim. Biophys. Acta.1226, 117.
Musil, D., et al. 1991. EMBO J.10, 2321.
Sloane B.F. 1990. Semin. Cancer Biol.1, 137.

法律資訊

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

安全信息

• 儲存類別代碼: 12 - Non Combustible Liquids
• 水污染物質分類（WGK）: WGK 2
• 閃點（°F）: Not applicable
• 閃點（°C）: Not applicable