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Merck
CN

R4877

Sigma-Aldrich

肾素 来源于小牛胃

≥20 units/mg protein

别名:

凝乳酶

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化学文摘社编号:
EC 号:
MDL编号:
UNSPSC代码:
12352204
NACRES:
NA.54
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表单

lyophilized powder

质量水平

比活

≥20 units/mg protein

纯化方式

crystallization

组成

Protein, ≥40%

储存温度

−20°C

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应用

Rennin(凝乳酶),也称为 chymosin(凝乳酶),是在小牛胃中产生的乳凝酸蛋白酶。它用于奶酪制作和研究新生儿胃消化

生化/生理作用

凝乳酶,一条 323 个氨基酸链,分泌时为无活性前体,然后通过限制性蛋白水解转化为活性酶。它能裂解 K-酪蛋白中苯丙氨酸和甲硫氨酸之间的肽键。

包装

包装规格取决于蛋白质含量

外形

含有氯化钠的冻干粉末

分析说明

缩二脲法测定蛋白

其他说明

一个单位将在 30°C 下每分钟凝结 10 mL 牛奶。

象形图

Health hazardExclamation mark

警示用语:

Danger

危险分类

Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3

靶器官

Respiratory system

储存分类代码

11 - Combustible Solids

WGK

WGK 3

法规信息

低风险生物材料
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历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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Xin-ping Li et al.
Xi bao yu fen zi mian yi xue za zhi = Chinese journal of cellular and molecular immunology, 28(7), 715-717 (2012-07-10)
To optimize the prochymosin (pCHY) gene codons and express the gene in Escherichia coli (E.coli), and to prepare its antiserum and detect chymosin protein specifically. According to codon usage bias of E.coli, prochymosin gene sequence was synthesized based on the
Kirsten Kastberg Møller et al.
Journal of agricultural and food chemistry, 60(21), 5454-5460 (2012-05-09)
Bovine chymosin constitutes a traditional ingredient for enzymatic milk coagulation in cheese making, providing a strong clotting capacity and low general proteolytic activity. Recently, these properties were surpassed by camel chymosin, but the mechanistic difference behind their action is not
Neil D Rawlings et al.
Nucleic acids research, 40(Database issue), D343-D350 (2011-11-17)
Peptidases, their substrates and inhibitors are of great relevance to biology, medicine and biotechnology. The MEROPS database (http://merops.sanger.ac.uk) aims to fulfil the need for an integrated source of information about these. The database has hierarchical classifications in which homologous sets
B Foltmann et al.
The Journal of biological chemistry, 254(17), 8447-8456 (1979-09-10)
The complete amino acid sequence of calf chymosin (rennin) (EC 3.4.23.4) has been determined. The sequence consists of a single peptide chain of 323 amino acid residues. The primary structure of the precursor part of calf prochymosin was published previously
Katarina Kosalková et al.
Microbial cell factories, 11, 5-5 (2012-01-12)
The secretion of heterologous animal proteins in filamentous fungi is usually limited by bottlenecks in the vesicle-mediated secretory pathway. Using the secretion of bovine chymosin in Aspergillus awamori as a model, we found a drastic increase (40 to 80-fold) in

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