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Merck

L4919

Sigma-Aldrich

Lysozyme 来源于鸡蛋白

BioUltra, lyophilized powder, ≥98% (SDS-PAGE), ≥40,000 units/mg protein

别名:

粘肽N-乙酰胞壁质水解酶, 胞壁质酶

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500 MG
$78.80
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500 MG
$78.80
1 G
$211.00
5 G
$700.00

About This Item

CAS号:
EC 号:
MDL编号:
UNSPSC代码:
12352204
NACRES:
NA.54

$78.80


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生物来源

chicken egg white

质量水平

等级

for molecular biology

产品线

BioUltra

方案

≥98% (SDS-PAGE)

表单

lyophilized powder

比活

≥40,000 units/mg protein

分子量

single-chain 14.3 kDa

组成

Protein, ≥90%

技术

cell based assay: suitable

适用性

suitable for cell lysis

应用

cell analysis

储存温度

−20°C

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一般描述

溶菌酶广泛存在于动植物界。它是天然的食品防腐剂,也存在于特定的细菌细胞壁中。溶菌酶通常存在于眼泪、牛奶、尿液和唾液中。[1]

应用

溶菌酶(来自鸡蛋白)已用于:
  • 蛋白动力学的介电谱研究[2]
  • 作为人溶菌酶活性检测对照[3]
  • 作为护理隐形眼镜的浸泡液的添加剂[4]

酶可分解细菌的细胞壁;用于制备原生质体。

生化/生理作用

溶菌酶参与防御机制。它具有通过在底物中产生空间应力刺激催化的能力。[1]
溶菌酶可水解肽聚糖中N-乙酰胞壁酸与N-乙酰-D-氨基葡萄糖残基之间以及壳糊精中N-乙酰-D-氨基葡萄糖残基之间的β(1→4)连接。 革兰氏阳性细胞对这种水解非常敏感,因为它们的细胞壁中的肽聚糖比例很高。革兰氏阴性菌就对这种水解没那么敏感,因为它们有外膜并且肽聚糖的比例较低。然而,这些细胞可能在细胞外膜中螯合金属离子的EDTA存在的情况下水解。

该酶在广泛的pH范围(6.0至9.0)内具有活性。pH值为6.2时,可在更广的离子强度范围(0.02至0.100 M)观察到最大活性,而pH值为9.2时为0.01至0.06 M。
溶菌酶可水解肽聚糖中N-乙酰胞壁酸与N-乙酰-D-氨基葡萄糖残基之间以及壳糊精中N-乙酰-D-氨基葡萄糖残基之间的β(1→4)连接。革兰氏阳性细胞对这种水解非常敏感,因为它们的细胞壁中的肽聚糖比例很高。

特点和优势

  • 通过反复结晶和透析进行高度纯化
  • 每个批次均对从 E. coli中分离质粒DNA进行测试

单位定义

在25℃、pH 6.24条件下,以溶壁微球菌悬浮液为底物,一个单位在2.6 mL反应混合物中可产生0.001/min的ΔA450 (光程为1 cm)。

制备说明

3 次结晶

象形图

Health hazard

警示用语:

Danger

危险声明

预防措施声明

危险分类

Resp. Sens. 1

储存分类代码

11 - Combustible Solids

WGK

WGK 3

闪点(°F)

Not applicable

闪点(°C)

Not applicable

个人防护装备

Eyeshields, Gloves, type N95 (US)


历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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Natural Food Antimicrobial Systems (2000)
Corneal cell adhesion to contact lens hydrogel materials enhanced via tear film protein deposition
Elkins CM, et al.
Testing, e105512-e105512 (2014)
Metabolic engineering of probiotic Saccharomyces boulardii
Liu JJ, et al.
Applied and Environmental Microbiology, 82(8), 2280-2287 (2016)
Protein dynamics in a broad frequency range: Dielectric spectroscopy studies
Nakanishi M and Sokolov AP
Journal of Non-Crystalline Solids, 407, 478-485 (2015)
M K Suleiman et al.
PloS one, 14(12), e0220679-e0220679 (2019-12-27)
Kuwait is a semi-arid region with soils that are relatively nitrogen-poor. Thus, biological nitrogen fixation is an important natural process in which N2-fixing bacteria (diazotrophs) convert atmospheric nitrogen into plant-usable forms such as ammonium and nitrate. Currently, there is limited

商品

For use as a marker in SDS-PAGE; Albumin from chicken egg white, For use as a marker in SDS-PAGE; L-Lactic Dehydrogenase from rabbit muscle, Type XI, lyophilized powder, 600-1,200 units/mg protein

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。

GenElute™ Bacterial Genomic DNA Kit protocol describes a simple and convenient way for the isolation of pure genomic DNA from bacteria.

的GenElute™细菌基因组DNA试剂盒提供了一种从细菌中分离纯基因组DNA的简便方法。

相关内容

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

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

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

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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