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L6876

Sigma-Aldrich

Lysozyme from chicken egg white

powder or granules, ≥90 %, ≥39,000 units/mg protein

Synonym(s):

Mucopeptide N-acetylmuramoylhydrolase, Muramidase

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About This Item

CAS Number:
12650-88-3
Enzyme Commission number:
3.2.1.17 (BRENDA, IUBMB)
EC Number:
235-747-3
MDL number:
MFCD00131557
UNSPSC Code:
12352204
NACRES:
NA.54

biological source

chicken egg white

Quality Level

200

form

powder or granules

specific activity

≥39,000 units/mg protein

mol wt

single-chain 14.3 kDa

composition

, ≥90%

technique(s)

cell based assay: suitable

suitability

suitable for cell lysis

UniProt accession no.

P00698

application(s)

cell analysis

shipped in

wet ice

storage temp.

−20°C

Gene Information

chicken ... LYZ(396218)

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Application

Lysozyme from chicken egg white has been used for the extraction of genomic DNA from bacterial cells. It has been used as an external standard for MALDI-TOF (matrix assisted laser desorption ionization-time of flight) mass analysis.
Enzyme breaks down the cell walls of bacteria; used to prepare spheroplasts.

Biochem/physiol Actions

Lysozyme hydrolyzes β(1→4) linkages between N-acetylmuramic acid and N-acetyl-D-glucosamine residues in peptidoglycan and between N-acetyl-D-glucosamine residues in chitodextrin. Gram-positive cells are quite susceptible to this hydrolysis as their cell walls have a high proportion of peptidoglycan. Gram-negative bacteria are less susceptible due to the presence of an outer membrane and a lower proportion of peptidoglycan. However, these cells may be hydrolyzed in the presence of EDTA that chelates metal ions in the outer bacterial membrane.

The enzyme is active over a broad pH range (6.0 to 9.0). At pH 6.2, maximal activity is observed over a wider range of ionic strengths (0.02 to 0.100 M) than at pH 9.2 (0.01 to 0.06 M).

Features and Benefits

Lysozyme from chicken egg white is a versatile enzyme with unique properties that make it effective for various applications, including bacterial cell wall breakdown, genomic DNA extraction, and external standard for mass analysis. It is reliable, active over a broad pH range, and available in various packaging sizes.

Unit Definition

One unit will lyse 0.6 μg of Micrococcus lysodeikticus per minute by turbidimetric detection at 600 nm when suspended in buffer at pH 6.2 at 25 °C.

Other Notes

View more information on enzymes for complex carbohydrate analysis at www.sigma-aldrich.com/enzymeexplorer

Pictograms

Health hazard
GHS08

Signal Word

Danger

Hazard Statements

H334

Precautionary Statements

P261 - P284 - P501

Hazard Classifications

Resp. Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Inhibition of lung tumor colonization and cell migration with the disintegrin crotatroxin 2 isolated from the venom of Crotalus atrox.
Galan JA et al.
Toxicon, 51, 1186-1186 (2008)
Valerio Iebba et al.
Scientific reports, 8(1), 8210-8210 (2018-05-31)
In liver cirrhosis (LC), impaired intestinal functions lead to dysbiosis and possible bacterial translocation (BT). Bacteria or their byproducts within the bloodstream can thus play a role in systemic inflammation and hepatic encephalopathy (HE). We combined 16S sequencing, NMR metabolomics
Adrian P Nievergelt et al.
International journal of molecular sciences, 19(10) (2018-10-03)
Imaging living cells by atomic force microscopy (AFM) promises not only high-resolution topographical data, but additionally, mechanical contrast, both of which are not obtainable with other microscopy techniques. Such imaging is however challenging, as cells need to be measured with
Genevieve Buckley et al.
Journal of structural biology, 210(2), 107488-107488 (2020-03-04)
Cryo-transmission electron tomography (cryo-ET) in association with cryo-focused ion beam (cryo-FIB) milling enables structural biology studies to be performed directly within the cellular environment. Cryo-preserved cells are milled and a lamella with a typical thickness of 200-300 nm provides an electron
Sara Hernández-Pérez et al.
Journal of cell science, 133(5) (2019-11-30)
In order to mount high-affinity antibody responses, B cells internalise specific antigens and process them into peptides loaded onto MHCII for presentation to T helper cells (TH cells). While the biochemical principles of antigen processing and MHCII loading have been
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Protocols

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.

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.

Chromatograms

application for HPLC

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