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