Universität Hamburg, Department Chemie, Institut für Biochemie und Molekularbiologie, Martin-Luther-King Platz 6, 20146 Hamburg, Germany.
Angew Chem Int Ed Engl. 2013 Jul 22;52(30):7874-8. doi: 10.1002/anie.201302874. Epub 2013 Jun 21.
Capped and gowned: A two-step approach can be used to site-specifically modify the 5'-cap of eukaryotic mRNAs. First, a trimethylguanosinesynthase variant recognizes the m(7)G cap structure and introduces bioorthogonal groups using S-adenosyl-L-methionine-based cosubstrates. Then, the enzymatically introduced reporter groups are further modified by thiol-ene or CuAAC click chemistry (see scheme).
可以采用两步法来实现对真核 mRNA 5’-帽的定点修饰。首先,一种三甲基鸟苷合酶变体识别 m(7)G 帽结构,并使用基于 S-腺苷-L-甲硫氨酸的共底物引入生物正交基团。然后,通过硫醇-烯或 CuAAC 点击化学(见方案)进一步修饰酶引入的报告基团。