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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Mutants of elongation factor Tu promote ribosomal frameshifting and nonsense readthrough.

This is the first report of ribosomal frameshifting promoted by mutants of the elongation factor Tu (EF-Tu). EF-Tu mutants can suppress both -1 and +1 frameshift mutations. The level of nonsense readthrough is also increased at some UGA (this paper) and UAG (Hughes, 1987) sites by these mutants. Suppression occurs when a mutant tuf allele is paired with a wild-type copy of the other tuf gene but is most efficient when both tuf genes are mutant. Frameshifting mediated by the tuf alleles studied, tufA8 and tufB103, is not general; indeed most frameshift mutations are not suppressed. Several possible mechanisms by which mutant EF-Tu may cause frameshifting are discussed.[1]


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