L7001
Lysozyme 来源于鸡蛋白
lyophilized powder, ~50,000 units/mg protein (E1%/282)
别名:
粘肽N-乙酰胞壁质水解酶, 胞壁质酶
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关于此项目
化学文摘社编号:
UNSPSC Code:
12352204
EC Number:
235-747-3
MDL number:
type
Grade III
form
lyophilized powder
specific activity
~50,000 units/mg protein (E1%/282)
mol wt
single-chain 14.3 kDa
composition
Protein, ~85%
UniProt accession no.
storage temp.
−20°C
Gene Information
chicken ... LYZ(396218)
Application
酶可分解细菌的细胞壁；用于制备原生质体。
Biochem/physiol Actions
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。
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。
Physical form
Lyophilized powder containing sodium acetate buffer salts and sodium chloride
Preparation Note
3× Crystallized
Other Notes
View more information on enzymes for complex carbohydrate analysis at www.sigma-aldrich.com/enzymeexplorer
One unit will produce a ΔA450 of 0.001 per min at pH 6.24 at 25 °C, using a suspension of Micrococcus lysodeikticus as substrate, in a 2.6 mL reaction mixture (1 cm light path).
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signalword
Danger
hcodes
pcodes
Hazard Classifications
Resp. Sens. 1
存储类别
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
法规信息
新产品
此项目有
P F Zabrodskiĭ et al.
Eksperimental'naia i klinicheskaia farmakologiia, 75(11), 19-21 (2013-01-18)
It is established in experiments on noninbred rats that the use of imunofan (20 mg/kg daily) and polyoxidonium (150 mg/kg daily) for 7 days on the background of chronic intoxication with organophosphorus agent VX (0.01 LD50, single daily treatment for
Anne Derbise et al.
The Journal of infectious diseases, 207(10), 1535-1543 (2013-02-14)
Yersinia pestis (the plague bacillus) and its ancestor, Yersinia pseudotuberculosis (which causes self-limited bowel disease), encode putative homologues of the periplasmic lysozyme inhibitor Ivy and the membrane-bound lysozyme inhibitor MliC. The involvement of both inhibitors in virulence remains subject to
Mariela G Del Giudice et al.
Infection and immunity, 81(3), 956-964 (2013-01-16)
Secretion of proteins in Gram-negative bacteria is a high-energy-consuming process that requires translocation across two membranes and a periplasmic space composed of a mesh-like layer, the peptidoglycan. To achieve this, bacteria have evolved complex secretion systems that cross these barriers