Synthesis of 2'-Fluoro RNA by Syn5 RNA polymerase.

The substitution of 2'-fluoro for 2'-hydroxyl moieties in RNA substantially improves the stability of RNA. RNA stability is a major issue in RNA research and applications involving RNA. We report that the RNA polymerase from the marine cyanophage Syn5 has an intrinsic low discrimination against the incorporation of 2'-fluoro dNMPs during transcription elongation. The presence of both magnesium and manganese ions at high concentrations further reduce this discrimination without decreasing the efficiency of incorporation. We have constructed a Syn5 RNA polymerase in which tyrosine 564 is replaced with phenylalanine (Y564F) that further decreases the discrimination against 2'-fluoro-dNTPs during RNA synthesis. Sequence elements in DNA templates that affect the yield of RNA and incorporation of 2'-fluoro-dNMPs by Syn5 RNA polymerase have been identified. © The Author(s) 2015. Published by Oxford University Press on behalf of Nucleic Acids Research.

Citation

Bin Zhu, Alfredo Hernandez, Min Tan, Jan Wollenhaupt, Stanley Tabor, Charles C Richardson. Synthesis of 2'-Fluoro RNA by Syn5 RNA polymerase. Nucleic acids research. 2015 Aug 18;43(14):e94

PMID: 25897116

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