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- W2024585408 abstract "Rsp5p is a conserved HECT-domain ubiquitin ligase with diverse roles in cellular physiology. Here we report a previously unknown role of Rsp5p in facilitating the stability of the cytoplasmic ribosome pool in budding yeast. Yeast strains carrying temperature-sensitive mutations in RSP5 showed a progressive decline in levels of 18S and 25S rRNAs and accumulation of rRNA decay fragments when cells grown in rich medium were shifted to restrictive temperature. This was accompanied by a decreased number of translating ribosomes and the appearance of ribosomal subunits with an abnormally low sedimentation rate in polysome analysis. Abrogating Rsp5p function affected stability of other tested noncoding RNA species (tRNA and snoRNA), but to a lower extent than that of rRNA, and also inhibited processing of rRNA and tRNA precursors, in agreement with previous studies. The breakdown of cellular ribosomes was not affected by deletion of key genes involved in autophagy, previously implicated in ribosome turnover upon starvation. Our results suggest that functional Rsp5p is required to maintain the integrity of cytoplasmic ribosomes under rich nutrient conditions." @default.
- W2024585408 created "2016-06-24" @default.
- W2024585408 creator A5035829298 @default.
- W2024585408 creator A5085994366 @default.
- W2024585408 date "2011-06-10" @default.
- W2024585408 modified "2023-10-18" @default.
- W2024585408 title "The ubiquitin ligase Rsp5 is required for ribosome stability in <i>Saccharomyces cerevisiae</i>" @default.
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- W2024585408 doi "https://doi.org/10.1261/rna.2615311" @default.
- W2024585408 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3153967" @default.
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