表单
lyophilized powder
质量水平
比活
≥250 units/mg protein (E1%/280)
分子量
~45 kDa
颜色
white
UniProt登记号
储存温度
−20°C
基因信息
human ... CTSD(1509)
一般描述
组织蛋白酶D是一种天冬氨酸蛋白酶，位于溶酶体中。它可参与蛋白质分解代谢并维持激素和抗原的加工过程。组织蛋白酶D与肿瘤形成和神经退行性改变有关。它可调节溶酶体蛋白水解和内源性纤维蛋白溶解。
应用
来自人肝脏的组织蛋白酶D已被用于：
- β分泌酶活性测定
- 酶降解淀粉样β1-42
- 人包皮成纤维细胞的显微注射
生化/生理作用
内体溶酶体天冬氨酸蛋白酶与乳腺癌转移和阿尔茨海默病有关。在细胞凋亡的人包皮成纤维细胞中，发现组织蛋白酶D的溶酶体释放先于细胞色素c的释放和膜电位的丧失。
组织蛋白酶D是一种内体-溶酶体天冬氨酸蛋白酶，与乳腺癌转移和阿尔茨海默病有关。在细胞凋亡的人包皮成纤维细胞中，发现组织蛋白酶D的溶酶体释放先于细胞色素c的释放和膜电位的丧失。诱导凋亡后12至24小时，PC12细胞中的组织蛋白酶D水平升高。
外形
含磷酸钠缓冲盐的粉末。
其他说明
在pH3.3，37°C条件下，一单位可在30分钟内导致A280 增加1.0个单位，该活性利用酸变性血红蛋白作为底物，通过TCA可溶产物进行测定（1 cm光路）。
等电聚焦观察到含有α、β和γ同工酶。
储存分类代码
11 - Combustible Solids
WGK
WGK 3
闪点(°F)
Not applicable
闪点(°C)
Not applicable
法规信息
常规特殊物品
历史批次信息供参考:
分析证书(COA)
Lot/Batch Number
Aspartic Proteinases Physiology and Pathology (1995)
Platelet membrane beta-secretase activity in mild cognitive impairment and conversion to dementia: a longitudinal study
McGuinness B, et al.
Journal of Alzheimer'S Disease, 49(4), 1095-1103 (2016)
Jeane do Nascimento Moraes et al.
The journal of venomous animals and toxins including tropical diseases, 28, e20220002-e20220002 (2022-11-22)
Cathepsin D (CatD) is a lysosomal proteolytic enzyme expressed in almost all tissues and organs. This protease is a multifunctional enzyme responsible for essential biological processes such as cell cycle regulation, differentiation, migration, tissue remodeling, neuronal growth, ovulation, and apoptosis.
Marie Maynadier et al.
Journal of controlled release : official journal of the Controlled Release Society, 171(2), 251-257 (2013-08-01)
Implication of the intracellular proteolytic activity of Cathepsin D (CathD), a lysosomal aspartyl-protease overexpressed in numerous solid tumors, has been evidenced on tumor growth. Its intracellular inhibition by potent inhibitors such as pepstatin constitutes a relevant but challenging molecular target.
Andrea Gilg et al.
Journal of translational medicine, 19(1), 190-190 (2021-05-05)
Endogenous Peptide Inhibitor of CXCR4 (EPI-X4) is a natural antagonist of the CXC chemokine receptor 4 (CXCR4). EPI-X4 is a 16-mer peptide that is released from human serum albumin (HSA) by acidic aspartic proteases such as Cathepsin D and E.
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