L6876

Lysozyme from chicken egg white

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

• Synonyma: Mucopeptide N-acetylmuramoylhydrolase, Muramidase
• Číslo CAS: 12650-88-3
• UNSPSC Code: 12352204
• NACRES: NA.54
• EC Number: 235-747-3
• MDL number: MFCD00131557
• Číslo EC: 3.2.1.17 (BRENDA, IUBMB)
• Specific activity: ≥39,000 units/mg protein
• Biological source: chicken egg white

Vlastnosti

• biological source: chicken egg white
• Quality Segment: 200
• form: powder or granules
• specific activity: ≥39,000 units/mg protein
• mol wt: single-chain 14.3 kDa
• technique(s): cell based assay: suitable
• input: bacteria and yeast sample(s)
• suitability: suitable for cell lysis
• UniProt accession no.: P00698
• application(s): cell analysis
• storage temp.: room temp
• Gene Information: chicken ... LYZ(396218)

Popis

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).

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.

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.

Other Notes

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.

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

Bezpečnostní informace

• pictograms: GHS08
• signalword: Danger
• hcodes: H334
• pcodes: P261 - P284 - P501
• Hazard Classifications: Resp. Sens. 1
• Skladovací třída: 11 - Combustible Solids
• wgk: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)