A Conserved PP2A Regulatory Subunit Enforces Proportional Relationships Between Cell Size and Growth Rate.

ABSTRACT: Cell size is proportional to growth rate. Thus, cells growing rapidly in rich nutrients can be nearly twice the size of cells growing slowly in poor nutrients. This proportional relationship appears to hold across all orders of life, yet the underlying mechanisms are unknown. In budding yeast, most growth occurs during mitosis, and the proportional relationship between cell size and growth rate is therefore enforced primarily by modulating growth in mitosis. When growth is slow, the duration of mitosis is increased to allow more time for growth, yet the amount of growth required to complete mitosis is reduced, which leads to the birth of small daughter cells. Previous studies have found that Rts1, a member of the conserved B56 family of protein phosphatase 2A regulatory subunits, works in

SUBMITTER: Leitao RM 

PROVIDER: S-EPMC6781898 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature