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C3142

Sigma-Aldrich

α-糜蛋白酶 来源于牛胰腺

(TLCK treated to inactivate residual tryspin activity), Type VII, essentially salt-free, lyophilized powder, ≥40 units/mg protein

同義詞:

胰凝乳蛋白酶

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About This Item

CAS號碼:
酶委員會編號:
EC號碼:
MDL號碼:
分類程式碼代碼:
12352204
eCl@ss:
42010112
NACRES:
NA.54

種類

Type VII

形狀

essentially salt-free, lyophilized powder

比活性

≥40 units/mg protein

分子量

25 kDa

溶解度

1 mM HCl: soluble 10 mg/mL, clear

UniProt登錄號

儲存溫度

−20°C

基因資訊

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應用

用 Sigma 公司的 α-糜蛋白酶与蝗虫游走蛋白 (Locusta migratoria) 形成复合物,测定了两个同源抑制剂(大脑间部主肽-C 和大脑间部主肽-D2v)的晶体结构

生化/生理作用

α-糜蛋白酶是一种丝氨酸肽酶,在由二硫键连接的三条多肽链(a 链-13 残基、B 链-131 残基和 C 链-97 残基)中含有 241 个氨基酸残基。发现该酶的分子量为 25 kDa。其 pI 为 8.75。选择性水解酪氨酸、苯丙氨酸、色氨酸和亮氨酸 C 末端的肽键。ca2+ 激活并稳定酶。该酶被二异丙基氟磷酸盐 (DFP)、苯甲基磺酰氟 (PMSF)、N-对甲苯磺酰基-L-苯丙氨酸氯甲基酮 (TPCK)、糜蛋白酶抑制剂、抑肽酶、α1-抗胰蛋白酶、α2-巨球蛋白、10 mM cu2 + 和 hg2 + 抑制。
一种丝氨酸蛋白酶,能将与芳香烃或其他大型疏水性侧链(Tyr、Trp、Phe、Met、Leu)结合的肽从键的羧基端水解。

單位定義

在 pH 值为 7.8、25°C 条件下,1 个单位每分钟水解 1.0 μmol BTEE。

準備報告

TLCK处理灭活可能存在于胰凝乳蛋白酶中的胰蛋白酶,而不影响胰凝乳蛋白酶活性。

分析報告

通过 A1%/280 测定蛋白

其他說明

訊號詞

Danger

危險分類

Acute Tox. 4 Oral - Aquatic Acute 1 - Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3

標靶器官

Respiratory system

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 1

個人防護裝備

dust mask type N95 (US), Eyeshields, Faceshields, Gloves


分析證明 (COA)

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存取文件庫

M Gestin et al.
Digestive diseases and sciences, 42(6), 1302-1311 (1997-06-01)
A specific method for pancreatic elastase II activity analysis was developed. True elastase II activity could be discriminated from that of elastase I and chymotrypsin. The postnatal development of four pancreatic proteases in the duodenal juice of children and in
Tommi Kotila et al.
Nature communications, 13(1), 3442-3442 (2022-06-16)
Actin polymerization generates forces for cellular processes throughout the eukaryotic kingdom, but our understanding of the 'ancient' actin turnover machineries is limited. We show that, despite > 1 billion years of evolution, pathogenic Leishmania major parasite and mammalian actins share the same
A Roussel et al.
The Journal of biological chemistry, 276(42), 38893-38898 (2001-08-10)
The crystal structures of two homologous inhibitors (PMP-C and PMP-D2v) from the insect Locusta migratoria have been determined in complex with bovine alpha-chymotrypsin at 2.1- and 3.0-A resolution, respectively. PMP-C is a potent bovine alpha-chymotrypsin inhibitor whereas native PMP-D2 is
Tobias Koschubs et al.
Nucleic acids research, 38(10), 3186-3195 (2010-02-04)
Mediator is the central coactivator complex required for regulated transcription by RNA polymerase (Pol) II. Mediator consists of 25 subunits arranged in the head, middle, tail and kinase modules. Structural and functional studies of Mediator are limited by the availability
Zhenyao Luo et al.
FEBS letters, 592(13), 2341-2350 (2018-06-02)
The bacterium Streptococcus pneumoniae (the pneumococcus) is a major human pathogen that requires Zn2+ for its survival and virulence in the host environment. Polyhistidine triad protein D (PhtD) has a known role in pneumococcal Zn2+ homeostasis. However, the mechanistic basis

文章

Analytical Enzyme Chymotrypsin: Chymotrypsin is produced in the acinar cells of the pancreas as the inactive precursor, chymotrypsinogen.

分析酵素 Chymotrypsin:糜蛋白酶在胰腺的胰腺尖細胞中以非活性前體糜蛋白酶原的形式產生。

條款

Follow our procedure for the determination of a chymotrypsin activity. This enzymatic assay of alpha chymotrypsin guides you through the entire process and necessary calculations.

按照我们的程序进行胰凝乳蛋白酶活性测定。该α-胰凝乳蛋白酶测定将会指导您完成整个过程以及必要的计算。

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