TNT T7 kit (Promega) with (Stratagene) SP6 pol

peter via (by peter.ianakiev from
Fri Feb 6 08:33:55 EST 2009

On Feb 6, 4:15 am, rompu... from wrote:
> Hello,
> My lab has the TNT T7 Coupled Reticulucyte Lysate System (Promega).
> However the cDNA I want to transcribe/translate is in a plasmid under
> the control of Sp6 promoter. My lab has the Sp6 RNA polymerase from
> Stratagene. Therefore, has somebody try to add to the TNT mixture a
> different RNA polymerase (from a different company)? I have found some
> posts describing a buffert that can be used in that kit. However,
> these posts were related to T7 RNA polymerase.
> I would prefer to avoid subcloning the cDNA in a different plasmid and/
> or carrying out transcription/translation in two steps.
> Thanks
> Rom

I would not mess with the kit. Just make RNA separately with the SP6
pol , purify and use it with the reticulocyte extract.

More information about the Methods mailing list