Evidence map›Paper›PMID 22621898›Full record

ArticleMolecular biology of the cell2012

Plk1 negatively regulates PRC1 to prevent premature midzone formation before cytokinesis.

Chi-Kuo Hu, Nurhan Ozlü, Margaret Coughlin, Judith J Steen, Timothy J Mitchison

Abstract read
In one paragraph

Article in Molecular biology of the cell, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.

0numbers the graph read from it
0cells of the map it votes in
55citing papers in PubMed
3.7field-weighted citation impact, top 6% 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

55 citing papers in PubMed, 99 citations in OpenAlex.

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  19. Anaphase B: Long-standing models meet new concepts.Seminars in cell & developmental biology · 2021
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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

5 authors at 2 institutions in 1 country.

Chi-Kuo HuDepartment of Systems Biology, Harvard Medical School, Boston, MA 02115, USA. chikuohu@post.harvard.edu
Nurhan Ozlü
Margaret Coughlin
Judith J Steen
Timothy J Mitchison
Harvard University · USBoston Children's Hospital · US

Funding

GENETIC AND BIOCHEMICAL ANALYSIS OF CYTOKINESISR01GM023928 · NIGMS · UNIVERSITY OF CALIFORNIA SAN FRANCISCO · PI MITCHISON, TIMOTHY J · 1985 to 2010
$3.6M
NIGMS NIH HHS GM 23928NIGMS NIH HHS R01 GM023928
6 · The paper itself

Abstract

To achieve mitosis and cytokinesis, microtubules must assemble into distinct structures at different stages of cell division-mitotic spindles to segregate the chromosomes before anaphase and midzones to keep sister genomes apart and guide the cleavage furrow after anaphase. This temporal regulation is believed to involve Cdk1 kinase, which is inactivated in a switch-like way after anaphase. We found that inhibiting Plk1 caused premature assembly of midzones in cells still in metaphase, breaking the temporal regulation of microtubules. The antiparallel microtubule-bundling protein PRC1 plays a key role in organizing the midzone complex. We found that Plk1 negatively regulates PRC1 through phosphorylation of a single site, Thr-602, near the C-terminus of PRC1. We also found that microtubules stimulated Thr-602 phosphorylation by Plk1. This creates a potential negative feedback loop controlling PRC1 activity. It also made the extent of Thr-602 phosphorylation during mitotic arrest dependent on the mechanism of the arresting drug. Unexpectedly, we could not detect a preanaphase regulatory role for Cdk1 sites on PRC1. We suggest that PRC1 is regulated by Plk1, rather than Cdk1 as previously proposed, because its activity must be spatiotemporally regulated both preanaphase and postanaphase, and Cdk1 activity is too binary for this purpose.

Indexed as

CDC2 Protein KinaseCell Cycle ProteinsCell Line, TumorCytokinesisHeLa CellsHumansMicrotubulesMitosisPhosphorylationPolo-Like Kinase 1Protein Serine-Threonine KinasesProto-Oncogene ProteinsSpindle ApparatusCDC2 Protein KinaseCell Cycle ProteinsPolo-Like Kinase 1PRC1 protein, humanProtein Serine-Threonine KinasesProto-Oncogene Proteins

Identifiers

PMID22621898
PMCPMC3395659
OpenAlexW2067501048

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.