生物来源
chicken egg white
质量水平
形式
powder (crystalline)
比活
70000-140000 U/mg
分子量
single-chain 14.3 kDa
Mr ~14600
技术
cell based assay: suitable
适用性
suitable for cell lysis
UniProt登记号
应用
cell analysis
储存温度
2-8°C
基因信息
chicken ... LYZ(396218)
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应用
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。
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。
单位定义
在pH 7.0和25℃条件下,1 U对应于每分钟使450 nm处的吸光度降低0.001的酶量(藤黄微球菌,ATCC 4698,作为底物)
警示用语:
Danger
危险声明
危险分类
Resp. Sens. 1
WGK
WGK 3
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
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