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Merck
CN

L2879

Sigma-Aldrich

Lysozyme 氯化物形式 来源于鸡蛋白

Grade VI, ≥35,000 units/mg protein (E1%/282)

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别名:
粘肽N-乙酰胞壁质水解酶, 胞壁质酶
CAS号:
EC 号:
MDL编号:
UNSPSC代码:
12352204
NACRES:
NA.54

生物来源

chicken egg white

质量水平

类型

Grade VI

形式

lyophilized powder

比活

≥35,000 units/mg protein (E1%/282)

分子量

~14.3 kDa

组成

Protein, ≥80%

技术

cell based assay: suitable

适用性

suitable for cell lysis

应用

cell analysis

储存温度

−20°C

一般描述

Lysozyme, also known as muramidase, is a bacteriolytic enzyme found in phagocytic cells like leukocytes. The name "lysozyme" is derived from its ability to dissolve or hydrolyze the β-1-4-glycosidic bond between N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM) in the walls of certain bacteria. This protein is present in animals, plants, bacteria, and viruses. It can also be found in granules of neutrophils, macrophages, as well as in serum, saliva, milk, honey, and hen egg white. There are different types of lysozymes, including the c-type (chicken type), the g-type (goose-type), and the i-type (invertebrates).

应用

Lysozyme chloride form from chicken egg white has been used:
  • as a component in the protein mixture to study the effects of yeast cells on membrane fouling caused by a protein mixture in dead-end filtration
  • in dip system to study its bacteriostatic or bactericidal effects on Salmonella-contaminated broiler parts
  • in viscometric assay for determining lysozyme activity    

生化/生理作用

Lysozyme serves as an indicator of macrophage-mediated host response, correlates with white cell death, and exhibits a high turnover rate. Elevated levels of serum lysozyme have been observed in various chronic inflammatory conditions, inflammatory bowel diseases, hematological disorders, and renal disorders. The c-type lysozyme from hen egg white is commonly used as a model for studying protein structure and function. Muramidase primarily exhibits bactericidal activity against Gram-positive bacteria.

单位定义

一个酶活性单位是指在pH 6.24、25°C条件下,以溶壁微球菌(Micrococcus lysodeikticus)悬浮液作为底物,在2.6 mL的反应混合物中(1 cm光路),每分钟产生0.001的ΔA450所需的酶量。

外形

含氯化钠和乙酸钠的冻干粉。

制备说明

3×结晶

WGK

WGK 2

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

Eyeshields, Gloves, type N95 (US)

法规信息

动植物源性产品

分析证书(COA)

输入产品批号来搜索 分析证书(COA) 。批号可以在产品标签上"批“ (Lot或Batch)字后找到。

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Lysozyme-occurrence in nature, biological properties and possible applications
Gajda E and Bugla-P G
Journal of biological and chemical chronicles, 68, 1501-1515 (2014)
A Sobrino-López et al.
Journal of dairy science, 91(5), 1759-1768 (2008-04-19)
High-intensity pulsed electric field (HIPEF) is a nonthermal treatment studied for its wide antimicrobial spectrum on liquid food, including milk and dairy products. Moreover, the antimicrobial effect of HIPEF may be enhanced by combining HIPEF with other treatments as hurdles.
Serum Lysozyme (Muramidase) Levels in Intra-Abdominal Abscesses: An Experimental Study
Daniel MP, et al.
The Indian Journal of Surgery (2015)
Viscometric assay for determining lysozyme activity
Yamaoka K, et al.
Analytica Chimica Acta, 219, 123-126 (1989)
The effect of lysozyme and ethylenediaminetetraacetic acid on Salmonella on broiler parts
Samuelson, KJ, et al.
Poultry Science, 64(8), 1488-1490 (1985)

实验方案

This enzymatic rate determination may be used for Lysozyme products. It is not to be used to assay recombinant or insoluble Lysozyme on agarose.

该酶速率测定可用于溶菌酶产物。它不适用于在测定在琼脂糖上的重组型或不溶性溶菌酶。

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