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- W3193834724 abstract "ABSTRACT Fission yeast cells prevent mitotic entry until a threshold cell surface area is reached. The protein kinase Cdr2 contributes to this size control system by forming multiprotein nodes that inhibit Wee1 at the medial cell cortex. Cdr2 node anchoring at the cell cortex is not fully understood. Through a genomic screen, we identified the conserved GTPase Arf6 as a component of Cdr2 signaling. Cells lacking Arf6 failed to divide at a threshold surface area and instead shifted to volume-based divisions at increased overall size. Arf6 stably localized to Cdr2 nodes in its GTP-bound but not GDP-bound state, and its GEF (guanine nucleotide exchange factor) Syt22 was required for both Arf6 node localization and proper size at division. In arf6Δ mutants, Cdr2 nodes detached from the membrane and exhibited increased dynamics. These defects were enhanced when arf6Δ was combined with other node mutants. Our work identifies a regulated anchor for Cdr2 nodes that is required for cells to sense surface area." @default.
- W3193834724 created "2021-08-30" @default.
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- W3193834724 date "2021-08-17" @default.
- W3193834724 modified "2023-10-16" @default.
- W3193834724 title "Arf6 anchors Cdr2 nodes at the cell cortex to control cell size at division" @default.
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- W3193834724 doi "https://doi.org/10.1101/2021.08.17.456680" @default.
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