L6876

Lysozyme from chicken egg white

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

• 동의어(들): Mucopeptide N-acetylmuramoylhydrolase, Muramidase
• CAS Number: 12650-88-3
• 효소 위원회 번호: 3.2.1.17 (BRENDA, IUBMB)
• EC Number: 235-747-3
• MDL number: MFCD00131557
• UNSPSC 코드: 12352204
• NACRES: NA.54

속성

• 생물학적 소스: chicken egg white
• 양식: powder or granules
• 특이 활성도: ≥39,000 units/mg protein
• 분자량: single-chain 14.3 kDa
• 기술: cell based assay: suitable
• 적합성: suitable for cell lysis
• UniProt 수납 번호: P00698
• 응용 분야: cell analysis
• 저장 온도: room temp
• 유전자 정보: chicken ... LYZ(396218)

설명

애플리케이션

Enzyme breaks down the cell walls of bacteria; used to prepare spheroplasts.

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.

생화학적/생리학적 작용

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.

특징 및 장점

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.

단위 정의

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.

기타 정보

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

안전성 정보

• 픽토그램: GHS08
• 신호어: Danger
• 유해 및 위험 성명서: H334
• 예방조치 성명서: 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
• 개인 보호 장비: Eyeshields, Gloves, type N95 (US)