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.

Základní údaje

Originální název

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

Autoři

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

Vydání

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

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

Genetika a molekulární biologie

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 29.431

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000228067500008

Klíčová slova anglicky

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

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 2. 7. 2009 18:59, doc. Mgr. Jan Havliš, Dr.

Anotace

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.