Evidence map›Paper›PMID 21384262›Full record

ArticleChromosoma2011

Homolog pairing and sister chromatid cohesion in heterochromatin in Drosophila male meiosis I.

Jui-He Tsai, Rihui Yan, Bruce D McKee

Abstract read
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In one paragraph

Article in Chromosoma, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
2.0field-weighted citation impact, top 13% of its field
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

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

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

21 citing papers in PubMed, 30 citations in OpenAlex.

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  14. ATP synthase FNature communications · 2018
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 1 institution in 1 country.

Jui-He TsaiDepartment of Biochemistry, Cellular, and Molecular Biology, University of Tennessee, Knoxville, USA. jtsai1@utk.edu
Rihui Yan
Bruce D McKee
University of Tennessee at Knoxville · US

Funding

STIMULATION OF CHROMOSOME PAIRING AND EXCHANGE BY RDNAR01GM040489 · NIGMS · UNIVERSITY OF WISCONSIN EAU CLAIRE · PI MCKEE, BRUCE D. · 1988 to 2017
$4.0M
NIGMS NIH HHS R01GM40489
6 · The paper itself

Abstract

Drosophila males undergo meiosis without recombination or chiasmata but homologous chromosomes pair and disjoin regularly. The X-Y pair utilizes a specific repeated sequence within the heterochromatic ribosomal DNA blocks as a pairing site. No pairing sites have yet been identified for the autosomes. To search for such sites, we utilized probes targeting specific heterochromatic regions to assay heterochromatin pairing sequences and behavior in meiosis by fluorescence in situ hybridization (FISH). We found that the small fourth chromosome pairs at heterochromatic region 61 and associates with the X chromosome throughout prophase I. Homolog pairing of the fourth chromosome is disrupted when the homolog conjunction complex is perturbed by mutations in SNM or MNM. On the other hand, six tested heterochromatic regions of the major autosomes proved to be largely unpaired after early prophase I, suggesting that stable homolog pairing sites do not exist in heterochromatin of the major autosomes. Furthermore, FISH analysis revealed two distinct patterns of sister chromatid cohesion in heterochromatin: regions with stable cohesion and regions lacking cohesion. This suggests that meiotic sister chromatid cohesion is incomplete within heterochromatin and may occur at specific preferential sites.

Indexed as

ChromatidsMeiosisAnimalsCentromereChromosome PairingChromosome SegregationDrosophila melanogasterFluorescenceHeterochromatinIn Situ Hybridization, FluorescenceMaleMolecular ProbesMutationSpermatocytesX ChromosomeY ChromosomeHeterochromatinMolecular Probes

Identifiers

PMID21384262
OpenAlexW2025972891

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.