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Proteinase K is an endolytic protease that cleaves peptide bonds atthe carboxylic sides of aliphatic, aromatic or hydrophobic amino acids.Proteinase K is classified as a serine protease. The smallest peptide tobe hydrolysed is a tetrapeptide.
DNA Extraction lysis reagent for DNA tests & genotyping: The Proteinase K solution is useful when a small amount of biologicalsamples are processed. Add the enzyme solution to DirectPCR reagents at the final concentration of 0.5-1.0 mg/ml (25-50 μl Proteinase K solution per 1 ml DirectPCR reagent). Follow the instruction manuals for DirectPCR ReagentProtocol/Manual for each blood, blood stain, buccal swab, hair root DNA genotyping. Once diluted in DirectPCR reagents, Proteinase K is stable for~24 hrs.
Other applications: Proteinase K digests nativeproteins very effectively. It can therefore be used to remove DNases andRNases when isolating DNA and RNA from tissues or cells.
Usage Conditions:
• Proteinase K is active over a wide pH range—optimal activity between 6.5 and 9.5
• Under denaturing conditions—e.g., in the presence of SDS or urea
• In the presence of metal chelating agents—e.g., EDTA
• At high temperatures—optimum digestion temperature is 65°C
Unit Definition: One unit of the enzymeliberates folin-positive amino acids and peptides corresponding to 1μmoltyrosine in 1min at 37°C using denatured hemoglobin as substrate.
Quality Control: Tested for the absence of endo-, exodeoxyribonucleases and ribonucleases
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