SITE-SPECIFIC ENZYMATIC MODIFICATION OF EXENDINS AND ANALOGS THEREOF

摘要

There is provided inter alia a method of covalently attaching an amine derivatizing agent to a glutamine of a first polypeptide. The method includes adding an amine derivatizing agent, a transglutaminase a first polypeptide which includes a glutamine, and a co-solvent to a reaction mixture. The method further includes allowing the amine derivatizing agent to react with the glutamine of the first polypeptide in the reaction mixture to form an amide bond, thereby covalently attaching the amine derivatizing agent to the glutamine of the first polypeptide.