Proteinase K Powder from Thermo Fisher Scientific

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Proteinase K Powder

Description

Proteinase K from the fungus Engyodontium album is a non-specific serine protease that is useful for general digestion of proteins.

Proteinase K Remains Active:
  • Over a wide pH range (optimal activity between 6.5 and 9.5)
  • Under denaturing conditions (e.g. the presence of SDS or urea)
  • In the presence of metal chelating agents (e.g. EDTA)
  • At comparatively high temperatures (optimum digestion temperature is 65°C)
Applications
  • Removal of endogenous nucleases during the preparation of DNA and RNA
  • Preparation of tissue sections for in situ hybridization
Performance and Quality Testing
  • Endodeoxyribonuclease and exodeoxyribonuclease assays
  • Liquid form tested for absence of RNase activity
Unit Definition
  • One mAnson unit is described as that amount of enzyme that liberates 1 µmole of Folin-positive amino acid within one minute at 37°C using hemoglobin as a substrate
Storage Requirements
  • Store dry powder in desiccant at -20°C