Defects in Saccharomyces cerevisiae protein phosphatase type I activate the spindle/kinetochore checkpoint.

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.

journal_name

Genes Dev

journal_title

Genes & development

authors

Bloecher A,Tatchell K

doi

10.1101/gad.13.5.517

subject

Has Abstract

pub_date

1999-03-01 00:00:00

pages

517-22

issue

5

eissn

0890-9369

issn

1549-5477

journal_volume

13

pub_type

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