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名称
胃蛋白酶 来源于猪胃粘膜
货号
P755354-100g
包装规格
100g
浓度
powder,≥400 units/mg protein
产品介绍
在进行免疫亲和柱步骤之前,来自Sigma的酶已被用于获得食品中总维生素B12的含量 在分离第三期幼虫(L3)之前,它还被用于消化蜗牛的切碎软组织。胃蛋白酶是一种用于消化蛋白的肽酶,通常用于从抗体制备Fab片段。来自猪胃粘膜的胃蛋白酶已用于水解小鼠中的干燥宫颈样品。 产品P7125以粉末形式提供。 产品P7125已被用于使肾细胞中的DNA变性 并且在进行EGFR染色之前,对来自肛管癌(ACC)的活检病理学样品进行消化。胃蛋白酶切割可用于产生抗体的F(ab′)2 片段。有关胃蛋白酶的更多信息,请访问 www.sigma-aldrich.com/enzymeexplorer。 Pepsin is a peptidase used to digest proteins and is commonly used in the preparation of Fab fragments from antibodies. Pepsin, from porcine gastric mucosa, has been used to hydrolyze dry cervical samples in mice. Product P7125 is provided in powder form. Product P7125 has been used to denature DNA from kidney cells and to digest pathology samples from anal canal carcinomas (ACC) biopsies prior to EGFR staining . The enzyme from Sigma has been used to obtain total vitamin B12 content in food products prior using immunoaffinity columns It has also been used to digest minced soft tissue of snails prior to the isolation of the third stage larvae (L3). Pepsin cleavage can be used to produce F(ab′) 2 fragments of antibodies. pepsin at www.sigma-aldrich.com/enzymeexplorer .
生化机理
它不会在缬氨酸、丙氨酸或甘氨酸连接键上进行裂解。 ZL-酪氨酰-L-苯丙氨酸、ZL-谷氨酰-L-酪氨酸或ZL-甲硫氨酰-L-酪氨酸可用作胃蛋白酶消化的底物。 胃蛋白酶可被几种含苯丙氨酸的肽抑制。胃蛋白酶可水解肽键,但不可水解酰胺或酯键。 胃蛋白酶可在具有芳香酸的肽的肽键任一侧进行切割。 当含硫氨基酸接近肽键时,它们会增加肽的水解敏感性。胃蛋白酶优先在苯丙氨酸和亮氨酸的羧基侧以及谷氨酸残基的羧基侧进行切割。 其可切割胰岛素β链中的Phe-Val、Gln-His、Glu-Ala、Ala-Leu、Leu-Tyr、Tyr-Leu、Gly-Phe、Phe-Phe和Phe-Tyr键 胃蛋白酶是胃中产生的主要蛋白水解酶。它可通过内部肽键的切割消化蛋白质。优先裂解:P1 和 P1′ 位的疏水性和芳族残基。降解胰岛素 β 链中的 Phe-Val、Gln-His、Glu-Ala、Ala-Leu、Leu-Tyr、Tyr-Leu、Gly-Phe、Phe-Phe 和 Phe-Tyr 键
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Research chemical 100g

Research chemical 100g; supplied for laboratory research, analysis, inspection, and scientific procurement use; specifications: 100g.

item number:P755354-100g
Product model:100g
level: 100g
Lead Time:30days
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