1.24568

Proteinase K

(from Tritirachium album) chromatographically purified lyophilized 30 mAnson-U/mg for biochemistry and molecular biology EC 3.4.21.14

• 동의어(들): Proteinase K from Tritirachium album, Tritirachium alkaline proteinase, Endopeptidase K
• CAS Number: 39450-01-6
• 효소 위원회 번호: 3.4.21.64 (BRENDA, IUBMB)
• MDL number: MFCD00132129
• UNSPSC 코드: 12352204
• EC 인덱스 번호: 254-457-8
• NACRES: NA.51

속성

• Quality Level: 400
• 양식: solid
• 분자량: 28.93 kDa
• pH: 6.2-6.8 (20 °C, 10 g/L in H₂O)
• density: 1.1 g/cm³
• 벌크 밀도: 35 kg/m³
• 저장 온도: 2-8°C

설명

애플리케이션

Useful for the proteolytic inactivation of nucleases during the isolation of DNA and RNA.

Useful for the proteolytic inactivation of nucleases during the isolation of DNA and RNA.
Removes endotoxins that bind to cationic proteins such as lysozyme and ribonuclease A.
Reported useful for the isolation of hepatic, yeast, and mung bean mitochondria
Determination of enzyme localization on membranes
Treatment of paraffin embedded tissue sections to expose antigen binding sites for antibody labeling.
Digestion of proteins from brain tissue samples for prions in Transmissible Spongiform Encephalopathies (TSE) research.

생화학적/생리학적 작용

Proteinase K is a stable and highly reactive serine protease. Evidence from crystal and molecular structure studies indicates the enzyme belongs to the subtilisin family with an active-site catalytic triad (Asp³⁹-His⁶⁹-Ser²²⁴). It is stable in a broad range of environments: pH, buffer salts, detergents (SDS), and temperature. In the presence of 0.1-0.5% SDS, proteinase K retains activity and will digest a variety of proteins and nucleases in DNA preparations without compromising the integrity of the isolated DNA.

분석 메모

Appearance (color): white
Appearance (description): lyophilisate
Activity (hemoglobin; pH 7.5; 37 °C): ≥ 30.0 mAnsonU/mg
Spec. activity (calc. on protein): ≥ 40 mAnsonU/mg
DNases (Nicking activity; pBR 322; 6 h; 37 °C): not detectable
RNases (RNA; 2 h; 37°C): not detectable

안전성 정보

• 픽토그램: GHS07,GHS08
• 신호어: Danger
• 유해 및 위험 성명서: H315 - H319 - H334 - H335
• 예방조치 성명서: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3
• 표적 기관: Respiratory system
• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1
• Flash Point (°F): Not applicable
• Flash Point (°C): Not applicable