1492-62-2Relevant articles and documents
Enzymatic synthesis and 19F NMR studies of 2-fluoroadenine- substituted RNA
Scott, Lincoln G.,Geierstanger, Bernhard H.,Williamson, James R.,Hennig, Mirko
, p. 11776 - 11777 (2004)
The production of isotopically labeled RNA remains critical to current NMR structural studies. One approach to obtain simple NMR spectra is to label with a nucleus that is not naturally occurring in RNA. Fluorine-19 can serve as a sensitive site-specific probe upon incorporation into RNA. Here we report the efficient in vitro enzymatic synthesis of 2-fluoroadenosine-5′-triphosphate and its incorporation into the HIV-2 transactivation region (TAR) of RNA by DNA template-directed transcription using phage T7 RNA polymerase. We provide unequivocal evidence for this 19F-substituted base analogue capability to selectively interact with uracil, forming 2F-A-U base pairs in RNA. The introduction of a 2-fluoroadenyl substitution is relatively nonperturbing and provides us with uniquely positioned, sensitive NMR reporter groups to monitor structural changes in the local RNA environment. Copyright
