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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
Lysozyme-occurrence in nature, biological properties and possible applications
Journal of biological and chemical chronicles, 68, 1501-1515 (2014)
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
The Indian Journal of Surgery (2015)
Viscometric assay for determining lysozyme activity
Analytica Chimica Acta, 219, 123-126 (1989)
The effect of lysozyme and ethylenediaminetetraacetic acid on Salmonella on broiler parts
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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