Proteinase K (CAS 39450-01-6) is a broad serine protease that often stays active in SDS, urea and EDTA, which is why extraction protocols use it. Activity is specified as greater than 30 mAnson U/mg; the batch COA reports the lot. Molecular-biology grade, DNase-free, RNase-free, and native versus recombinant each need their own line on the inquiry.
- Activity unit and the method named on the COA
- Molecular-biology grade, DNase-free and RNase-free requirements
- Lyophilized powder or solution; for a solution, the concentration
The product page is Proteinase K.
Related questions
Is greater than 30 mAnson U/mg a measured value?
It is the specification floor. The batch COA reports the result for that lot.
What is Proteinase K used with?
In extraction, often with guanidine isothiocyanate, DTT and SDS.
Inquire with the fields in this guide
CAS, salt form, grade, pack size and use. A complete note is faster to quote.
Send an inquiryFor research or industrial use only. Not for human or animal diagnosis or treatment, and not for drug or food use. Grade, pack size and lead time follow the supplier batch COA / SDS. Figures on this site are general industry references, not a factory specification.