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. 2001 Apr;157(4):1469–1480. doi: 10.1093/genetics/157.4.1469

Isolation and characterization of WHI3, a size-control gene of Saccharomyces cerevisiae.

R S Nash 1, T Volpe 1, B Futcher 1
PMCID: PMC1461599  PMID: 11290704

Abstract

WHI3 is a gene affecting size control and cell cycle in the yeast Saccharomyces cerevisiae. The whi3 mutant has small cells, while extra doses of WHI3 produce large cells, and a large excess of WHI3 produces a lethal arrest in G1 phase. WHI3 seems to be a dose-dependent inhibitor of Start. Whi3 and its partially redundant homolog Whi4 have an RNA-binding domain, and mutagenesis experiments indicate that this RNA-binding domain is essential for Whi3 function. CLN3-1 whi3 cells are extremely small, nearly sterile, and largely nonresponsive to mating factor. Fertility is restored by deletion of CLN2, suggesting that whi3 cells may have abnormally high levels of CLN2 function.

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Selected References

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