Thermostable DNA pol w/o RT activity?

Olav Hungnes ohungnes at
Thu Dec 1 04:06:51 EST 1994

Several of the thermostable DNA polymerases show reverse 
transcriptase activity, especially in the presence of 
appropriate divalent cations, e.g. Mn++ instead of Mg++.

I wish to perform DNA amplification that very selectively 
uses DNA and not RNA as the template. I'm presently using 
Taq poly (PerkinElmer AmpliTaq) and seem to have some rt 
activity even in the absence of Mn++. Are there other enzymes 
(preferrably commercially available) that are better suited?


Olav Hungnes                 olav.hungnes at
National Institute               Phone  (+47)22042200
of Public Health                 FAX    (+47)22353605

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