Mammalian Peptide Chain Termination, II. Codon Specificity and GTPase Activity of Release Factor
- 1 March 1971
- journal article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 68 (3) , 619-624
- https://doi.org/10.1073/pnas.68.3.619
Abstract
In vitro peptide chain termination with release factor preparations from rabbit reticulocytes, guinea pig liver, or Chinese hamster liver is directed with UAAA, UAGA, or UGAA, suggesting that UAA, UAG, and UGA are terminator condons for mammalian cells. Purified release factor from rabbit reticulocytes has ribosomaldependent GTPase activity, which is stimulated by UAAA. GTP hydrolysis appears requisite for in vitro peptide chain termination in mammals.Keywords
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