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Merck
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主要文件

C4879

Sigma-Aldrich

α-糜蛋白酶原A 来源于牛胰腺

essentially salt-free, lyophilized powder

别名:

chymotrypsin A zymogen

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About This Item

CAS号:
9035-75-0
EC號碼:
232-905-3
MDL號碼:
MFCD00130483
分類程式碼代碼:
12352204
NACRES:
NA.54

生物源

bovine pancreas

種類

Type II

形狀

essentially salt-free, lyophilized powder

比活性

≥40 units/mg solid

分子量

25,656 Da by calculation

純化經由

6× crystallization

溶解度

1 mM HCl: soluble 10 mg/mL, clear, colorless

UniProt登錄號

P00767

異物活動

α-chymotrypsin ≤1 U/mg (prior to activation by trypsin)

儲存溫度

−20°C

基因資訊

cow ... CTRB1(618826)

相关类别

一般說明

来自牛胰腺的胰凝乳蛋白酶原是一种含有5个二硫键的酶原。它的等电点是8.97。

應用

α-来自牛胰腺的胰凝乳蛋白酶原A已作为蛋白质模型用于结晶重现性研究。它还被用于质谱研究前α-麦醇溶蛋白的水解。
Sigma公司的这种酶已用于使用近红外（NIR）光谱技术无创测定固态蛋白质构象的过程中。它被用作研究蛋白质在聚合物/聚合物双水相体系中的分配。这种酶也被用作自相互作用色谱应用，以测试蛋白质渗透第二维利系数的快速测量。在该技术中，将蛋白质固定在色谱微粒上，并使用等度替代测定其保留时间。

生化／生理作用

一种丝氨酸蛋白酶，水解肽键与肽键羧基末端的芳香族或大型疏水侧链 (Tyr、Trp、Phe、Met) 的肽键。
胰凝乳蛋白酶原A需要有限的蛋白水解才能激活。胰凝乳蛋白酶原A可由胰蛋白酶和胰凝乳蛋白酶激活（自溶激活）以形成 m α、β、γ、δ和π胰凝乳蛋白酶（取决于激活条件）。胰凝乳蛋白酶原是一种蛋白酶，优先裂解芳香族氨基酸（包括色氨酸、酪氨酸和苯丙氨酸）羧基侧的肽。它也水解亮氨酸、蛋氨酸和丙氨酸羧基侧的肽。

單位定義

活化为硝酸凝乳蛋白酶后，在 pH 7.8、25°C 条件下，1 个单位将每分钟水解 1.0 μmol BTEE。

其他說明

有关胰凝乳蛋白酶的更多信息，请访问 www.sigma-aldrich.com/enzymeexplorer

儲存類別代碼

11 - Combustible Solids

水污染物質分類（WGK）

WGK 3

閃點（°F）

Not applicable

閃點（°C）

Not applicable

個人防護裝備

Eyeshields, Gloves, type N95 (US)

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
SLCH4277
SLBX4910
SLBT6615
SLBJ6864V
SLBF3413V

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Curtiss P Schneider et al.
The journal of physical chemistry. B, 115(22), 7447-7458 (2011-05-17)
L-Arginine hydrochloride is a very important aggregation suppressor for which there has been much attention given regarding elucidating its mechanism of action. Little consideration, however, has been given toward other salt forms besides chloride, even though the counterion likely imparts
Curtiss P Schneider et al.
The journal of physical chemistry. B, 113(7), 2050-2058 (2009-02-10)
The relatively new technique of vapor pressure osmometry was utilized to determine the preferential interaction of five common solution additives (arginine HCl, guanidine HCl, glycerol, glucose, and urea) using three different model proteins (BSA, lysozyme, and alpha-chymotrypsinogen). Results for guanidine
Effect of real-world sounds on protein crystallization
Zhang CY, et al.
International Journal of Biological Macromolecules, 112, 841-851 (2018)
Pedro P Madeira et al.
Journal of chromatography. A, 1190(1-2), 39-43 (2008-04-02)
Distribution coefficients of randomly selected proteins were measured in aqueous two-phase systems (ATPSs) formed by different combinations of Dextran-75 (Dex), Ficoll-70, polyethylene glycol-8000 (PEG), hydroxypropyl starch-100 (PES), and Ucon50HB5100 (Ucon, a random copolymer of ethylene glycol and propylene glycol) at
Shujun Bai et al.
Journal of pharmaceutical sciences, 94(9), 2030-2038 (2005-07-30)
Fourier transform infrared (FTIR) spectroscopy is a powerful tool for monitoring structural changes in lyophilized protein formulations. However, direct measurement of IR spectra requires significant handling time and effort. The possibility of using near infrared (NIR) spectroscopy as a rapid
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商品

HPLC Analysis of Proteins on TSKgel® BioAssist S

Separation of Ribonuclease A from bovine pancreas, Type I-A, powder, ≥60% RNase A basis (SDS-PAGE), ≥50 Kunitz units/mg protein; α-Chymotrypsinogen A from bovine pancreas, essentially salt-free, lyophilized powder; Cytochrome c from bovine heart, ≥95% based on Mol. Wt. 12,327 basis; Lysozyme from chicken egg white, lyophilized powder, protein ≥90 %, ≥40,000 units/mg protein

HPLC Analysis of Proteins on Proteomix® SCX-NP5

Separation of Ribonuclease A from bovine pancreas, Type I-A, powder, ≥60% RNase A basis (SDS-PAGE), ≥50 Kunitz units/mg protein; α-Chymotrypsinogen A from bovine pancreas, essentially salt-free, lyophilized powder; Cytochrome c from bovine heart, ≥95% based on Mol. Wt. 12,327 basis; Lysozyme from chicken egg white, lyophilized powder, protein ≥90 %, ≥40,000 units/mg protein

HPLC Analysis of Proteins by Cation Exchange on Proteomix® WCX-NP5: Affect of pH

Separation of Ribonuclease A from bovine pancreas, Type I-A, powder, ≥60% RNase A basis (SDS-PAGE), ≥50 Kunitz units/mg protein; α-Chymotrypsinogen A from bovine pancreas, essentially salt-free, lyophilized powder; Cytochrome c from bovine heart, ≥95% based on Mol. Wt. 12,327 basis; Lysozyme from chicken egg white, lyophilized powder, protein ≥90 %, ≥40,000 units/mg protein

HPLC Analysis of Proteins by Cation Exchange on Proteomix® WCX-NP5: Affect of pH

Separation of Ribonuclease A from bovine pancreas, Type I-A, powder, ≥60% RNase A basis (SDS-PAGE), ≥50 Kunitz units/mg protein; α-Chymotrypsinogen A from bovine pancreas, essentially salt-free, lyophilized powder; Cytochrome c from bovine heart, ≥95% based on Mol. Wt. 12,327 basis; Lysozyme from chicken egg white, lyophilized powder, protein ≥90 %, ≥40,000 units/mg protein

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Chromatograms

application for HPLC

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