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- W3210167334 abstract "ABSTRACT Intracellular trafficking pathways control residency and bioactivity of integral membrane proteins at the cell surface. Upon internalisation, surface cargo proteins can be delivered back to the plasma membrane via endosomal recycling pathways. Recycling is thought to be controlled at the metabolic and transcriptional level, but such mechanisms are not fully understood. In yeast, recycling of surface proteins can be triggered by cargo deubiquitination and a series of molecular factors have been implicated in this trafficking. In this study, we follow up on the observation that many subunits of the Rpd3 lysine deacetylase complex are required for recycling. We validate ten Rpd3-complex subunits in recycling using two distinct assays and developed tools to quantify both. Fluorescently labelled Rpd3 localises to the nucleus and complements recycling defects, which we hypothesised were mediated by modulated expression of Rpd3 target gene(s). Bioinformatics implicated 32 candidates that function downstream of Rpd3, which were over-expressed and assessed for capacity to suppress recycling defects of rpd3Δ cells. This effort yielded 3 hits: Sit4, Dit1 and Ldb7, which were validated with a lipid dye recycling assay. Additionally, the essential phosphatidylinositol-4-kinase Pik1 was shown to have a role in recycling. We propose recycling is governed by Rpd3 at the transcriptional level via multiple downstream target genes." @default.
- W3210167334 created "2021-11-08" @default.
- W3210167334 creator A5002781016 @default.
- W3210167334 creator A5009003400 @default.
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- W3210167334 creator A5037468978 @default.
- W3210167334 creator A5061764111 @default.
- W3210167334 creator A5084866318 @default.
- W3210167334 date "2021-10-23" @default.
- W3210167334 modified "2023-10-12" @default.
- W3210167334 title "The Rpd3-complex regulates expression of multiple cell surface recycling factors in yeast" @default.
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- W3210167334 doi "https://doi.org/10.1101/2021.10.22.465438" @default.