Restriction proteases?

Cornelius Krasel krasel at
Fri Jan 26 10:09:09 EST 1996

We look for the most specific way to cleave a GST fusion protein. Currently
we use a Thrombin "restriction" site which works fine, unfortunately
the Thrombin cleaves also somewhere inside the fusion protein. I have
been told that the specificity of Thrombin is not too high. Therefore
I currently wonder if I should replace the Thrombin cleavage site with
a recognition sequence for another protease. I wonder which protease
could others recommend? (Factor Xa seems to be common but I have heard
that it often works not very well. What about IgA protease or entero-

Thanks for your help,


/* Cornelius Krasel, U Wuerzburg, Dept. of Pharmacology, Versbacher Str. 9 */
/* D-97078 Wuerzburg, Germany   email: phak004 at  SP3 */
/* "Science is the game we play with God to find out what His rules are."  */

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