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Vol. 180, Issue 13, 3462-3466, July 1, 1998

NOTE
Does Disparate Occurrence of Autoregulatory Programmed Frameshifting in Decoding the Release Factor 2 Gene Reflect an Ancient Origin with Loss in Independent Lineages?

Britt C. Persson1 and John F. Atkins2

1 Howard Hughes Medical Institute1 and 2 Department of Human Genetics,2 University of Utah, Salt Lake City, Utah 84112-5330

In Escherichia coli an autoregulatory mechanism of programmed ribosomal frameshifting governs the level of polypeptide chain release factor 2. From an analysis of 20 sequences of genes encoding release factor 2, we infer that this frameshift mechanism was present in a common ancestor of a large group of bacteria and has subsequently been lost in three independent lineages.

Copyright © 1998 by American Society for Microbiology


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