Abstract
The Tetrahymena ribozyme has been shown to catalyze an RNA polymerase-like reaction in which an RNA primer is extended by the sequential addition of pN nucleotides derived from GpN dinucleotides, where N = A, C, or U. Here, we show that this reaction is influenced by the presence of a template; bases that can form Watson-Crick base pairs with a template add as much as 25-fold more efficiently than mismatched bases. A mutant enzyme with an altered guanosine binding site can catalyze template-directed primer extension with all four bases when supplied with dinucleotides of the form 2-aminopurine-pN.
Dates
Type | When |
---|---|
Created | 9 years, 10 months ago (Oct. 5, 2015, 8:25 p.m.) |
Deposited | 2 years, 8 months ago (Dec. 15, 2022, 9:03 a.m.) |
Indexed | 5 days, 22 hours ago (Aug. 20, 2025, 8:21 a.m.) |
Issued | 34 years, 2 months ago (June 1, 1991) |
Published | 34 years, 2 months ago (June 1, 1991) |
Published Online | 34 years, 2 months ago (June 1, 1991) |
Published Print | 34 years, 2 months ago (June 1, 1991) |
@article{Bartel_1991, title={Template-directed primer extension catalyzed by the Tetrahymena ribozyme.}, volume={11}, ISSN={1098-5549}, url={http://dx.doi.org/10.1128/mcb.11.6.3390}, DOI={10.1128/mcb.11.6.3390}, number={6}, journal={Molecular and Cellular Biology}, publisher={Informa UK Limited}, author={Bartel, D P and Doudna, J A and Usman, N and Szostak, J W}, year={1991}, month=jun, pages={3390–3394} }