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PLoS One. 2013;8(3):e59450. doi: 10.1371/journal.pone.0059450. Epub 2013 Mar 27.

Heterologous stop codon readthrough of metazoan readthrough candidates in yeast.

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Department of Biology, Massachussetts Institute of Technology, Cambridge, Massachussetts, United States of America.


Recent analysis of genomic signatures in mammals, flies, and worms indicates that functional translational stop codon readthrough is considerably more abundant in metazoa than previously recognized, but this analysis provides only limited clues about the function or mechanism of readthrough. If an mRNA known to be read through in one species is also read through in another, perhaps these questions can be studied in a simpler setting. With this end in mind, we have investigated whether some of the readthrough genes in human, fly, and worm also exhibit readthrough when expressed in S. cerevisiae. We found that readthrough was highest in a gene with a post-stop hexamer known to trigger readthrough, while other metazoan readthrough genes exhibit borderline readthrough in S. cerevisiae.

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