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PMID:10072380

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Citation

Bloecher, A and Tatchell, K (1999) Defects in Saccharomyces cerevisiae protein phosphatase type I activate the spindle/kinetochore checkpoint. Genes Dev. 13:517-22

Abstract

A conditional allele of type 1 protein phosphatase (glc7-129) in Saccharomyces cerevisiae causes first cycle arrest in G2/M, characterized by cells with a short spindle and high H1 kinase activity. Point-of-execution experiments indicate Glc7p function is required in G2/M just before anaphase for the completion of mitosis. Loss of the spindle/kinetochore checkpoint in glc7-129 cells abolishes the G2/M cell cycle arrest with a concomitant increase in chromosome loss and reduced viability. These results support a role for Glc7p in regulating kinetochore attachment to the spindle, an event monitored by the spindle/kinetochore checkpoint.

Links

PubMed PMC316501

Keywords

Chromosomes, Fungal; Fungal Proteins/genetics; Fungal Proteins/physiology; G2 Phase; Kinetochores/physiology; Mitosis; Mitotic Spindle Apparatus/physiology; Phosphoprotein Phosphatases/genetics; Phosphoprotein Phosphatases/physiology; Saccharomyces cerevisiae/enzymology; Saccharomyces cerevisiae/genetics; Signal Transduction

Significance

Annotations

Gene product Qualifier GO ID GO term name Evidence Code with/from Aspect Notes Status


See also

References

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