Enzymatic and NMR analysis of oligoribonucleotides synthesized with 2′-tert-butyldimethylsilyl protected cyanoethlphosphoramidite monomers
- 1 January 1990
- journal article
- research article
- Published by Oxford University Press (OUP) in Nucleic Acids Research
- Vol. 18 (11) , 3347-3352
- https://doi.org/10.1093/nar/18.11.3347
Abstract
The regioisomeric integrity of the internucleotide phosphate linkage in synthetic RNA using 2''-tertbutyldimethylsilyl protection was examined using enzymatic and NMR techniques. Two sets of DNA-RNA hybrid nonamers, T3XT5 and T5XT3 (where X = rA, rC, rG and U) and the tetramer AGCU were analyzed. Enzyme catalyzed hydrolysis of the nonamers with ribonuclease T2 showed that the linkage at the ribonucleotide was the desired 3''-5''. A control nonamer with a 2''-5'' linkage was subjected to the enzyme, and showed no cleavage. High-resolution proton NMR of the tetramer also gave a favorable comparison with the same molecule obtained by non-chemical means.This publication has 18 references indexed in Scilit:
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