'Tandem' Primers for PCR Mutagenesis
oliver at molgen.biologie.uni-marburg.de
Mon Apr 11 06:17:50 EST 1994
>Hi! If you do two seperate PCR each with one universal and one mutagenic
>primer and manage to get the two bands of interest. Then purify the bands
>from the agarose gel with Qiagen or Geneclean, add DNA from each recovered
>band to Another set of PCR with the two universal primers. If the condition
>of PCR is adjusted o.k. You won't have problem to get the mutated product.
>Good Luck! Langtuo Deng
I made just the procedure mentioned above - worked fine. But upon
construction of the internal primers be aware that Taq adds an additional A
to the 3' end.
By the way I would recommend to use one of the thermostable polymerases with
proof reading function. Otherwise you might get more than just the desired
mutations. An other advantage ist, that these enzymes do not add an extra A.
The disadvantage is, that it took in my hands quite some time to find the
correct parameters for the PCR.
Novell-Server Molekulargenetik Biologie Uni-Marburg Deutschland
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