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Proteinase K
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Proteinase K

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China

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Persona de contacto Mr. jack

tianhe, guangzhou, Other

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Especificaciones del producto

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  • Other Names: -
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Descripción del producto

Proteinase K

                                  

Grade:High purity grade, for Molecular Biology

Cat#ES***1  **0mg

Cat#ES***2  1g

Cat#ES***3  1kg                                   

Storage Temperature*0°C

CAS# *********6

Purity: ≧*9%

Specific activity: ≧*0 units/mg of protein

DNase none detected

RNase none detected

Endonuclease (nickase) none detected

 

Product Description

Proteinase K is a stable serine protease with broad substrate specificity. It degrades many proteins in the native state even in the presence of detergents.

Evidence from crystal and molecular structure studies indicates the enzyme belongs to the subtilisin family with an activesitecatalytic triad (Asp*9, His*9, Ser**4). The predominant site of cleavage is the peptide bond adjacent to the carboxyl group of aliphatic and aromatic amino acids with blocked alpha amino groups. It is commonly used for its broad specificity.The mode and specificity of action has been studied.Proteinase K is frequently used in molecular biology

applications to digest unwanted proteins, such as nucleases from DNA or RNA preparations from microorganisms, cultured cells, and plants.The enzyme is typically used at ****0μg/ml in nucleic acid preparations at pH 7.*8.0 and *7°C. Incubation times vary from *0minutes to *8hours. Proteinase K is usually denatured by subsequent phenol extractions, although it can autodigest during long incubations.

Proteinase K is active in 1% Triton X***0 and fully active in 0.5% (w/v) SDS. SDS and urea will denature protein substrates resulting in increased digestion rates.Proteinase K itself is denatured much more slowly by these agents.

 

Unit Definition: One unit is defined as the amount of enzyme that will liberate 1 µmol of tyrosine per minute at *7ºC, pH 7.5.      

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Mr. jack < Guangzhou Geneshun Biotech Ltd >

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