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L7773

Sigma-Aldrich

Lysozyme 来源于鸡蛋白

aseptically filled

别名:

粘肽N-乙酰胞壁质水解酶, 胞壁质酶

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About This Item

CAS号:
12650-88-3
EC 号:
3.2.1.17 (BRENDA, IUBMB)
EC號碼:
235-747-3
MDL號碼:
MFCD00131557
分類程式碼代碼:
12352204
NACRES:
NA.54

無菌

aseptically filled

品質等級

300

形狀

powder

enzyme activity

≥40000 units/mg protein

分子量

single-chain 14.3 kDa

UniProt登錄號

P00698

儲存溫度

−20°C

基因資訊

chicken ... LYZ(396218)

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應用

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。
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。

單位定義

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。

準備報告

使用L6876制备

其他說明

更多关于复杂碳水化合物分析酶的信息请见www.sigma-aldrich.com/enzymeexplorer

象形圖

Health hazard
GHS08

訊號詞

Danger

危險聲明

H334

防範說明

P261 - P284 - P501

危險分類

Resp. Sens. 1

儲存類別代碼

11 - Combustible Solids

水污染物質分類（WGK）

WGK 3

閃點（°F）

Not applicable

閃點（°C）

Not applicable

個人防護裝備

Eyeshields, Gloves, type N95 (US)

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
SLCC8731
SLBT3909
SLBQ2049V
SLBN3247V
SLBB8599V

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Zhe Wang et al.
The journal of physical chemistry. B, 117(4), 1186-1195 (2013-01-11)
High-resolution inelastic X-ray scattering was used to investigate the collective vibrational excitations in hydrated lysozyme powders as a function of hydration level and temperature. It is found that the samples with strong enzymatic function are "soft", in the sense that
Sven O Dahms et al.
Acta crystallographica. Section D, Biological crystallography, 69(Pt 2), 284-297 (2013-02-07)
Heavy-atom clusters (HA clusters) containing a large number of specifically arranged electron-dense scatterers are especially useful for experimental phase determination of large complex structures, weakly diffracting crystals or structures with large unit cells. Often, the determination of the exact orientation
Yashwanth Ashok et al.
Methods in enzymology, 520, 175-198 (2013-01-22)
G-protein-coupled receptors (GPCRs) represent a major class of receptors through which a number of signals ranging from photons to large glycoprotein hormones are recognized. Human genome encodes about 800 GPCRs, yet very little structural information is available on this class
Masaki Honda et al.
Transplantation, 95(4), 551-558 (2013-02-21)
Neutrophils are considered responsible for the pathophysiologic changes during hepatic ischemia-reperfusion (I/R) injury; however, few studies have examined real-time intravital neutrophil recruitment. Here, we show a method for imaging the neutrophil recruitment in hepatic I/R injury using two-photon laser scanning
Tao G Dong et al.
Proceedings of the National Academy of Sciences of the United States of America, 110(7), 2623-2628 (2013-01-31)
Type VI protein secretion system (T6SS) is important for bacterial competition through contact-dependent killing of competitors. T6SS delivers effectors to neighboring cells and corresponding antagonistic proteins confer immunity against effectors that are delivered by sister cells. Although T6SS has been
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商品

Carbohydrate Analysis

A key resource feature at our Enzyme Explorer section of biochemicals is "Enzymes for Carbohydrate Analysis and Digestion." Offering kits, reagents, analysis, lists of enzymes related to PTM and carbohydrate metabolism.

Carbohydrate Analysis

A key resource feature at our Enzyme Explorer section of biochemicals is "Enzymes for Carbohydrate Analysis and Digestion." Offering kits, reagents, analysis, lists of enzymes related to PTM and carbohydrate metabolism.

实验方案

Enzymatic Assay of Lysozyme (EC 3.2.1.17)

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

Enzymatic Assay of Lysozyme (EC 3.2.1.17)

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

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