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pcr taq pfuu

frog pennie at access3.digex.net
Thu Feb 2 08:14:12 EST 1995

On 1 Feb 1995 goldman%bchem.dnet at DXI.NIH.GOV wrote:

> The assumption is that taq falls off because the error it makes creates a 
> mismatch stopping its forward movement. Once taq is of pfu comes on, 
> repairs the damage and continues. Pfu is not highly proccessive, falls of 
> 'by accident' and taq takes over again.
This is the explanation I expected, but what I dont understand is what's 
to stop taq getting back on after the mistake-dropoff occurs (remember its 
x100 the conc of pfu from original post) and proceding thus fixing the 
error. When Taq is in such excess I would expect this reaction to be 

After all this is what happens in everyone's PCR reactions everyday.


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