IUBio

STREP-Tag purification

Philipp Wechner philipp.wechner at uibk.ac.at
Mon Jun 17 02:52:08 EST 2002


I do not want to crystallize my protein - i just want to purify it. I have
problems with the 6His-Tag - the NTA-collumn is not compatible with the puffer
i have to use (DTT has to be present, high Tris).
How are the yields of purified protein with the Strep Tag, does ist tolerate
DTT?

Thanks for your help


Artem Evdokimov schrieb:

> Depends what you use the protein for :) Just as any tag, there are problems.
> For example we could not crystallize one of our proteins with a C-terminal
> STREP tag, even though it'd crystallize just fine with Argx5, Hisx6 and (!)
> the biotin-acceptor peptide.
>
> STREP tag is definitely NOT my first choice, in general.
> A.G.E.
> "Philipp Wechner" <philipp.wechner at uibk.ac.at> wrote in message
> news:3D09C559.EEA9E8CD at uibk.ac.at...
> > Hi dear newsgroup....
> >
> > Does anybody have experience with the STREP tag? Is it efficient to
> > purify taged proteins? any problems with urea?
> >
> >




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