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名称
蛋白酶 来源于灰色链霉菌
别名
链霉蛋白酶E | 链霉菌蛋白酶 | 灰色链霉菌蛋白酶 | 链丝菌蛋白酶 | 链霉蛋白酶
英文别名
Pronase E | Actinase E
货号
P755359-50mg
包装规格
50mg
级别
EnzymoPure™
浓度
≥7000 units/g solid, powder
产品介绍
活力定义:在40℃和pH7.5条件下,非特异性蛋白酶活性的单位增加了酪蛋白中福林-阳性氨基酸和肽的释放速度。一单位(U)可释放1μmol/min酪氨酸。 最适PH:7.0-8.0。 最适温度:35-40 °C。 分子量:20000~60000。 性状:白色或微褐色或淡黄色粉末。 来源:灰色链霉菌。 稳定剂:钙离子保护效应: 该制剂中含20%的醋酸钙,用于其稳定性。按照现行的质量控制程序,它不含淀粉。含有0.01-0.1M钙的稀释溶液,在4到8℃的中性pH下,其活性在24小时内是稳定的。链霉素蛋白酶也可以通过低水平的钙来防止热失活。 工作溶液浓度:0.5 到 2 mg/ml 工作溶液:建议溶剂为蒸馏水。 应用: 来自灰色链霉菌的蛋白酶已被用于:消化髓核(NP)组织;催化不对称曼尼希一锅反应;淀粉脱蛋白;消化细胞解离用脑切片。 Application: Protease from Streptomyces griseus has been used:for the digestion of nucleus pulposus (NP) tissue;in the catalysis of asymmetric one pot Mannich reaction;for deproteinization of starch;digestion of brain slices for the cell dissociation.
生化机理
蛋白酶可通过肽键的水解使蛋白质分解代谢。 蛋白酶可被丝氨酸活性位点抑制剂所灭活,如苯甲基磺酰氟(PMSF)和二异丙基氟磷酸盐。 来自灰色链霉菌的蛋白酶是一种具有包括细胞外丝氨酸蛋白酶在内至少三种蛋白水解活性的混合物。丝氨酸蛋白酶显示出广泛的底物特异性,而这被视为通过分子中由一个Asp、一个His和Ser残基组成的活性位点所介导的。该酶更倾向于水解谷氨酸或天冬氨酸的羧基侧的肽键。该产品是由至少三种酪蛋白水解活性和一种氨肽酶活性所组成的混合物。 该酪蛋白分解酶被命名为灰色链霉菌蛋白酶A、灰色链霉菌蛋白酶B和灰色链霉菌胰蛋白酶。当需要广泛或完全降解蛋白质时,可使用该产品。该蛋白酶混合物是高度非特异性的并可作为单氨基酸消化酪蛋白至>70%的程度。
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Research chemical 50mg

Research chemical 50mg; supplied for laboratory research, analysis, inspection, and scientific procurement use; specifications: 50mg.

item number:P755359-50mg
Product model:50mg
level: 50mg
Lead Time:30days
sold 406 Items
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