Abstract
We have used the synthesis and 15N NMR study of separate loop A and loop B domains of the hairpin ribozyme to demonstrate that multiple 15N atoms can be incorporated into an RNA strand and be unambiguously distinguished through a combination of direct and indirect tagging by 13C atoms. Absence of 15N chemical shift changes shows that the G8N1 in loop A does not become deprotonated up to pH 8, and that the G21N7 of loop B does not bind to Mg2 +.
†In honor and celebration of the 70th birthday of Professor Leroy B. Townsend.
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Acknowledgments
We thank Seho Kim for assistance with the 2D NMR. This work was supported by grants from the National Institutes of Health (GM48802 and GM60485).
Notes
†In honor and celebration of the 70th birthday of Professor Leroy B. Townsend.