| Literature DB >> 1377367 |
A M Pyle1, F L Murphy, T R Cech.
Abstract
In catalysis by group I introns, the helix (P1) containing the RNA cleavage site must be positioned next to the guanosine binding site. We have identified a conserved adenine in the catalytic core that contributes to the stability of this arrangement and propose that it accepts a hydrogen bond from a specific 2'-OH in P1. Such base-backbone tertiary interactions may be generally important to the organization of RNA tertiary structure.Entities:
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Year: 1992 PMID: 1377367 DOI: 10.1038/358123a0
Source DB: PubMed Journal: Nature ISSN: 0028-0836 Impact factor: 49.962