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

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Spermidine deficiency increases +1 ribosomal frameshifting efficiency and inhibits Ty1 retrotransposition in Saccharomyces cerevisiae.

Polyamines have been implicated in nucleic acid-related functions and in protein biosynthesis. RNA sequences that specifically direct ribosomes to shift reading frame in the -1 and +1 directions may be used to probe the mechanisms controlling translational fidelity. We examined the effects of spermidine on translational fidelity by an in vivo assay in which changes in beta-galactosidase activity are dependent on yeast retrovirus Ty +1 and yeast double-stranded RNA virus L-A -1 ribosomal frameshifting signals. In spe2 delta mutants of Saccharomyces cerevisiae, which cannot make spermidine as a result of a deletion in the SPE2 gene, there is a marked elevation in +1 but no change in -1 ribosomal frameshifting. The increase in +1 ribosomal frameshifting efficiency is accompanied by a striking decrease in Ty1 retrotransposition.[1]

References

  1. Spermidine deficiency increases +1 ribosomal frameshifting efficiency and inhibits Ty1 retrotransposition in Saccharomyces cerevisiae. Balasundaram, D., Dinman, J.D., Wickner, R.B., Tabor, C.W., Tabor, H. Proc. Natl. Acad. Sci. U.S.A. (1994) [Pubmed]
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