J 2005

The yeast APC/C subunit Mnd2 prevents premature sister chromatid separation triggered by the meiosis-specific APC/C-Ama1

HAVLIŠ, Jan, Tobias OELSCHLAEGEL, Martin SCHWICKART, Joao MATOS, Aliona BOGDANOVA et. al.

Basic information

Original name

The yeast APC/C subunit Mnd2 prevents premature sister chromatid separation triggered by the meiosis-specific APC/C-Ama1

Authors

HAVLIŠ, Jan, Tobias OELSCHLAEGEL, Martin SCHWICKART, Joao MATOS, Aliona BOGDANOVA, Alain CAMASSES, Andrej SHEVCHENKO and Wolfgang ZACHARIAE

Edition

Cell, United States of America, Cell Press, Cambridge, MA, USA, 2005, 0092-8674

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

Genetics and molecular biology

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 29.431

Organization unit

Faculty of Science

UT WoS

000228067500008

Keywords in English

anaphase-promoting complex; chromosome segregation; fission yeast; centromeric cohesion; spore formation; protein family; kinase cdc5; cleavage; mitosis; proteolysis

Tags

International impact, Reviewed
Změněno: 2/7/2009 18:59, doc. Mgr. Jan Havliš, Dr.

Abstract

V originále

Cohesion established between sister chromatids during pre-meiotic DNA replication mediates two rounds of chromosome segregation. The first division is preceded by an extended prophase wherein homologous chromosomes undergo recombination. The persistence of cohesion during prophase is essential for recombination and both meiotic divisions. Here we show that Mnd2, a subunit of the anaphase-promoting complex (APC/C) from budding yeast, is essential to prevent premature destruction of cohesion in meiosis. During S- and prophase, Mnd2 prevents activation of the APC/C by a melosis-specific activator called Ama1. In cells lacking Mnd2 the APC/C-Ama1 enzyme triggers degradation of Pds1, which causes premature sister chromatid separation due to unrestrained separase activity. In vitro, Mnd2 inhibits ubiquitination of Pds1 by APC/C-Ama1 but not by other APC/C holo-enzymes. We conclude that chromosome segregation in meiosis depends on the selective inhibition of a meiosis-specific form of the APC/C.