CST2 - cystatin SA Gene

中文名称：胱抑素

种属: Homo sapiens

关于 CST2

功能概要

胱抑素超家族包括含有多个胱抑素样序列的蛋白质。一些成员是活性半胱氨酸蛋白酶抑制剂，而其他成员则失去或可能从未获得这种抑制活性。超家族中有三个抑制家族，包括 1 型胱抑素 (stefins) 、2 型胱抑素和激肽原。 2 型胱抑素蛋白是一类半胱氨酸蛋白酶抑制剂，存在于多种人体体液和分泌物中，它们似乎在其中提供保护功能。 20 号染色体上的胱抑素基因座包含大多数 2 型胱抑素基因和假基因。该基因位于半胱氨酸蛋白酶抑制剂位点，编码一种分泌型硫醇蛋白酶抑制剂，该抑制剂在唾液、眼泪和精浆中含量较高。[RefSeq 提供，2008 年 7 月]

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 secreted thiol Protease inhibitor found at high levels in saliva, tears and seminal plasma. [provided by RefSeq, Jul 2008]