Calpain Zymography: General Methodology and Protocol.

Calpain Zymography: General Methodology and Protocol.
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钙蛋白酶酶谱分析:一般方法和方案。

DOI:
10.1007/978-1-4939-7111-4_26
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发表时间:
2017
期刊:
Methods in molecular biology (Clifton, N.J.)
影响因子:
--
通讯作者:
Wang,KevinKW
Wang,KevinKW
中科院分区:
--
文献类型:
--
作者:
Wang,KevinKW

文献摘要

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酪蛋白酶谱法已成为监测纯化的酶、细胞或组织样品中哺乳动物钙激活蛋白酶(钙蛋白酶)的金标准测定法之一。这种钙蛋白酶酶谱法利用了以下优点:(1)酪蛋白是钙蛋白酶主要亚型(钙蛋白酶-1,2和3)的优良底物,(2)包埋的酪蛋白被消化成钙蛋白酶条带所在的小肽,从而在考马斯亮蓝凝胶染色时产生清晰的区域,和(3)钙蛋白酶亚型在天然凝胶条件下具有不同的凝胶迁移率。酪蛋白酶谱法也可用于研究抑制剂与钙蛋白酶结合的可逆性。
Casein zymography has become one of the gold standard assays for monitoring mammalian calcium-activated proteases (calpains) in purified enzyme, cell, or tissue samples. This calpain zymography method takes advantages of (1) casein is an excellent substrate for major isoforms of calpains (Calpain-1, 2 and 3), (2) the embedded casein is digested into small peptides where the calpain bands are located, thus creating a clear zone upon Commassie blue gel staining, and (3) the calpain isoforms have different gel mobility under native gel conditions. Casein zymography is also useful in studying reversibility of inhibitor binding to calpains.