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Proteinase K is a broad-spectrum serine protease that is widely used in molecular biology research. One of its key properties is its ability to digest a wide variety of proteins, making it useful for removing unwanted proteins from samples or for preparing protein-free DNA or RNA for downstream applications. Proteinase K is able to cleave peptide bonds adjacent to the carboxyl group of aliphatic and aromatic amino acids, making it highly effective at digesting proteins. Additionally, it is able to function over a wide range of pH values and temperatures, making it a versatile reagent that can be used in many different experimental conditions. Another important property of proteinase K is its ability to remain active in the presence of many detergents and denaturants, which can help to solubilize and denature proteins prior to digestion. This makes it a valuable tool in many applications where it is necessary to remove or modify proteins in order to isolate or study nucleic acids.
- Enzyme name: Proteinase K, E.C.: 22.214.171.124
- CAS No.:39450-01-6
- Source: Pichia pastoris with a mutant form of proteinase K gene Tritirachium album
- Molecular weight: 29.3 kDa
- pH Range: 4.5-12.0
- Temperature Range: 37°C-70°C
- Specific Activity: ≥40 units/mg protein
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