Evidence map›Paper›PMID 19629178›Full record

ArticlePLoS genetics2009

The pch2Delta mutation in baker's yeast alters meiotic crossover levels and confers a defect in crossover interference.

Sarah Zanders, Eric Alani

Abstract read
In one paragraph

Article in PLoS genetics, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

50 citing papers in PubMed.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

2 authors.

Sarah ZandersDepartment of Molecular Biology and Genetics, Cornell University, Ithaca, New York, United States of America.
Eric Alani

Funding

Roles for Mismatch Repair Proteins in Maintaining Genome StabilityR01GM053085 · NIGMS · CORNELL UNIVERSITY ITHACA · PI ALANI, ERIC E. · 1995 to 2019
$7.3M
NIGMS NIH HHS GM53085NIGMS NIH HHS R01 GM053085
6 · The paper itself

Abstract

Pch2 is a widely conserved protein that is required in baker's yeast for the organization of meiotic chromosome axes into specific domains. We provide four lines of evidence suggesting that it regulates the formation and distribution of crossover events required to promote chromosome segregation at Meiosis I. First, pch2Delta mutants display wild-type crossover levels on a small (III) chromosome, but increased levels on larger (VII, VIII, XV) chromosomes. Second, pch2Delta mutants show defects in crossover interference. Third, crossovers observed in pch2Delta require both Msh4-Msh5 and Mms4-Mus81 functions. Lastly, the pch2Delta mutation decreases spore viability and disrupts crossover interference in spo11 hypomorph strains that have reduced levels of meiosis-induced double-strand breaks. Based on these and previous observations, we propose a model in which Pch2 functions at an early step in crossover control to ensure that every homolog pair receives an obligate crossover.

Indexed as

Crossing Over, GeneticMeiosisChromosomes, FungalDNA Topoisomerases, Type IIEndodeoxyribonucleasesGene ConversionGene DeletionMeiotic Recombination Protein SPO11Microbial ViabilityNuclear ProteinsSaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsSpores, FungalDNA Topoisomerases, Type IIEndodeoxyribonucleasesMeiotic Recombination Protein SPO11Nuclear ProteinsPch2 protein, S cerevisiaeSaccharomyces cerevisiae ProteinsSpo11 protein, S cerevisiae

Identifiers

PMID19629178
PMCPMC2709914

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.