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Reference - PMID:11719193 - Mus81-Eme1 are essential components of a Holliday junction resolvase.

Reference summary

PubMed ID
PMID:11719193
Title
Mus81-Eme1 are essential components of a Holliday junction resolvase.
Authors
Boddy MN, Gaillard PHL, McDonald WH, Shanahan P, Yates JR, Russell P
Citation
Cell 2001 Nov 16;107(4):537-48
Publication year
2001
Abstract
Mus81, a fission yeast protein related to the XPF subunit of ERCC1-XPF nucleotide excision repair endonuclease, is essential for meiosis and important for coping with stalled replication forks. These processes require resolution of X-shaped DNA structures known as Holliday junctions. We report that Mus81 and an associated protein Eme1 are components of an endonuclease that resolves Holliday junctions into linear duplex products. Mus81 and Eme1 are required during meiosis at a late step of meiotic recombination. The mus81 meiotic defect is rescued by expression of a bacterial Holliday junction resolvase. These findings constitute strong evidence that Mus81 and Eme1 are subunits of a nuclear Holliday junction resolvase.

Annotation

Complementation

PBO:0017547 - functionally complemented by E. coli RusA

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GO biological process

GO:0006302 - double-strand break repair

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GO:0000712 - resolution of meiotic recombination intermediates

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GO cellular component

GO:0048476 - Holliday junction resolvase complex

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GO:0005634 - nucleus

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GO molecular function

GO:0008821 - crossover junction DNA endonuclease activity

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GO:0005515 - protein binding

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Multi-locus phenotype

FYPO:0000268 - sensitive to UV during vegetative growth

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Single locus phenotype

FYPO:0000151 - abnormal meiotic chromosome segregation

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FYPO:0000913 - abnormal sporulation resulting in formation of ascus containing non-uniform spores

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Genotypes:

FYPO:0001894 - abnormal sporulation resulting in formation of ascus with more or fewer than four spores

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FYPO:0003667 - abolished crossover junction endodeoxyribonuclease activity

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FYPO:0000581 - decreased spore germination frequency

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FYPO:0002150 - inviable spore population

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FYPO:0000309 - inviable spore with abnormal morphology

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Genotypes:

FYPO:0000268 - sensitive to UV during vegetative growth

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FYPO:0003612 - viable spore population

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Genotypes: