proteinase pretreatment???

Chi-Kuang Wen cwen at
Mon Apr 1 17:51:02 EST 1996

Dear Netters:

  For proteinase preparation, it is mentioned in Molecular Cloning(by 
Maniatis) that pronase needs a preatment to remove any DNase or RNase 
activity, but this pretreatment is not required for proteinase K.  Is 
there any reason that proteinase K is not required for the pretreatment?
   Someone said to me that proteinase K digested the DNase or RNase very 
quickly and is not required for pre-treatment; but this is just a 
thought.  IS anyone there can tell me any citation concerning this 

any thoughts are welcome.


Purdue University

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