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Science 3 February 1995:
Vol. 267. no. 5198, pp. 643 - 647
DOI: 10.1126/science.7530860

Articles

Science, Vol 267, Issue 5198, 643-647
Copyright © 1995 by American Association for the Advancement of Science


articles

Aminoacyl-RNA synthesis catalyzed by an RNA

M Illangasekare, G Sanchez, T Nickles, and M Yarus

Department of Molecular, Cellular, and Developmental Biology, University of Colorado, Boulder 80309-0347.

An RNA has been selected that rapidly aminoacylates its 2'(3') terminus when provided with phenylalanyl-adenosine monophosphate. That is, the RNA accelerates the same aminoacyl group transfer catalyzed by protein aminoacyl-transfer RNA synthetases. The best characterized RNA reaction requires both Mg2+ and Ca2+. These results confirm a necessary prediction of the RNA world hypothesis and represent efficient RNA reaction (> or = 10(5) times accelerated) at a carbonyl carbon, exemplifying a little explored type of RNA catalysis.


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