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Merck
모든 사진(1)

주요 문서

70663

Millipore

Proteinase K, Lyophilized

Highly active serine protease that exhibits broad cleavage specificity on native and denatured proteins and is widely used in the purification of DNA and RNA.

동의어(들):

Proteinase K from Tritirachium album, Endopeptidase K

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About This Item

CAS Number:
효소 위원회 번호:
MDL number:
UNSPSC 코드:
12352202
NACRES:
NA.85

Quality Level

양식

solid

분자량

28.93 kDa

제조업체/상표

Novagen®

저장 조건

OK to freeze

기술

DNA extraction: suitable

배송 상태

wet ice

저장 온도

2-8°C

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일반 설명

Proteinase K is a highly active 28,904-Daserine protease isolated from the fungusTritirachium album. The enzyme exhibitsbroad cleavage specificity on native anddenatured proteins and is widely used in thepurification of DNA and RNA. Its activityis increased in the presence of denaturantssuch as SDS (1%) and elevated temperature(50-60°C). The recommended workingconcentration is 50-100 µg/ml for proteinremoval and enzyme inactivation, and up to2 mg/ml for tissue treatment. The Proteinase K,Lyophilized powder can be prepared as a20 mg/ml stock solution in water and storedin aliquots at -20°C. The enzyme is alsoavailable as a ready-to-use concentrated stocksolution (600 mAU/ml) that is convenientfor routine use in most applications. 1 mgof Proteinase K is the equivalent of 30 mAU(AU = Anson unit). The Novagen ProteinaseK products are free of detectable DNase andRNase

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.

경고

Toxicity: Harmful (C)

단위 정의

One AU (AU = Anson unit) is defined as the amount of enzyme that liberates 1.0 µmol (181 µg) of tyrosine from casein per minute at pH 7.5 at 37°C.

법적 정보

NOVAGEN is a registered trademark of Merck KGaA, Darmstadt, Germany

픽토그램

Health hazardExclamation mark

신호어

Danger

유해 및 위험 성명서

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


시험 성적서(COA)

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