A role for cell polarity in lifespan and mitochondrial quality control in the budding yeast Saccharomyces cerevisiae.

ABSTRACT: Babies are born young, largely independent of the age of their mothers. Mother-daughter age asymmetry in yeast is achieved, in part, by inheritance of higher-functioning mitochondria by buds and retention of some high-functioning mitochondria in mother cells. The mitochondrial F box protein, Mfb1p, tethers mitochondria at both poles in a cell cycle-regulated manner: it localizes to and anchors mitochondria at the mother cell tip throughout the cell cycle and at the bud tip before cytokinesis. Here, we report that cell polarity and polarized localization of Mfb1p decline with age in Saccharomyces cerevisiae. Moreover, deletion of genes (BUD1, BUD2, and BUD5) that mediate symmetry breaking during establishment of cell polarity and asymmetric yeast cell division ca

SUBMITTER: Yang EJ 

PROVIDER: S-EPMC8914336 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature