pKa of a His tag.

[Artem Evdokimov]

Just remember that thrombin is promiscuous and can eat up your protein if
you have sequences that resemble thrombin cleavage site.

good luck !

Artem
"John Everett" <kellere at hotmail.com> wrote in message
news:5a7ca595.0202181636.b751328 at posting.google.com...
> Artem,
>
>    Thanks for the advice once again.
>    The carboxy peptidase sounds interesting
>    though I am already cloning in a thrombin
>    clevage site adjacent to the His tag.
>    The pH of 7.0 or less is indeed to prevent
>    amide proton - solvent exchange when the
>    sample is in the NMR.
>
>       Thanks,
>          John