Evidence map›Paper›PMID 24560576›Full record

ArticleCurrent biology : CB2014

Homeostatic actin cytoskeleton networks are regulated by assembly factor competition for monomers.

Thomas A Burke, Jenna R Christensen, Elisabeth Barone, Cristian Suarez, Vladimir Sirotkin, David R Kovar

Open access · bronzeAbstract read
In one paragraph

Article in Current biology : CB, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 153 papers.

0numbers the graph read from it
0cells of the map it votes in
153citing papers in PubMed
10.5field-weighted citation impact, top 1% 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

153 citing papers in PubMed, 232 citations in OpenAlex.

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93 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Thomas A BurkeDepartment of Molecular Genetics and Cell Biology, The University of Chicago, 920 East 58(th) Street, Chicago, IL 60637, USA.
Jenna R ChristensenDepartment of Molecular Genetics and Cell Biology, The University of Chicago, 920 East 58(th) Street, Chicago, IL 60637, USA.
Elisabeth BaroneDepartment of Cell and Developmental Biology, State University of New York (SUNY) Upstate Medical University, 750 East Adams Street, Syracuse, NY 13210, USA.
Cristian SuarezDepartment of Molecular Genetics and Cell Biology, The University of Chicago, 920 East 58(th) Street, Chicago, IL 60637, USA.
Vladimir SirotkinDepartment of Cell and Developmental Biology, State University of New York (SUNY) Upstate Medical University, 750 East Adams Street, Syracuse, NY 13210, USA. Electronic address: sirotkiv@upstate.edu.
David R KovarDepartment of Molecular Genetics and Cell Biology, The University of Chicago, 920 East 58(th) Street, Chicago, IL 60637, USA; Department of Biochemistry and Molecular Biology, The University of Chicago, 920 East 58(th) Street, Chicago, IL 60637, USA. Electronic address: drkovar@uchicago.edu.
University of Chicago · USSUNY Upstate Medical University · US

Funding

Molecular And Cellular Biology Training ProgramT32GM007183 · NIGMS · UNIVERSITY OF CHICAGO · PI GLICK, BENJAMIN S, RICE, PHOEBE A · 1985 to 2021
$23.9M
Mechanisms of Formin-Mediated Actin Filament Assembly - Renewal 01 - ResubmissionR01GM079265 · NIGMS · UNIVERSITY OF CHICAGO · PI KOVAR, DAVID R · 2007 to 2023
$4.5M
Functional Reconstitution of Yeast ExocytosisR01GM071832 · NIGMS · RICE UNIVERSITY · PI MCNEW, JAMES A · 2006 to 2010
$1.4M
NIGMS NIH HHS R01 GM071832NIGMS NIH HHS R01 GM079265NIGMS NIH HHS T32 GM007183NIGMS NIH HHS T32 GM0071832
6 · The paper itself

Abstract

Controlling the quantity and size of organelles through competition for a limited supply of components is quickly emerging as an important cellular regulatory mechanism. Cells assemble diverse actin filament (F-actin) networks for fundamental processes including division, motility, and polarization. F-actin polymerization is tightly regulated by activation of assembly factors such as the Arp2/3 complex and formins at specific times and places. We directly tested an additional hypothesis that diverse F-actin networks are in homeostasis, whereby competition for actin monomers (G-actin) is critical for regulating F-actin network size. Here we show that inhibition of Arp2/3 complex in the fission yeast Schizosaccharomyces pombe not only depletes Arp2/3-complex-mediated endocytic actin patches, but also induces a dramatic excess of formin-assembled F-actin. Conversely, disruption of formin increases the density of Arp2/3-complex-mediated patches. Furthermore, modification of actin levels significantly perturbs the fission yeast actin cytoskeleton. Increasing actin favors Arp2/3-complex-mediated actin assembly, whereas decreasing actin favors formin-mediated contractile rings. Therefore, the specific actin concentration in a cell is critical, and competition for G-actin helps regulate the proper amount of F-actin assembly for diverse processes.

Indexed as

Actin-Related Protein 2-3 ComplexActinsCell Cycle ProteinsCytoskeletal ProteinsCytoskeletonForminsMicrofilament ProteinsMutationSchizosaccharomycesSchizosaccharomyces pombe ProteinsActin-Related Protein 2-3 ComplexActinsCdc12 protein, S pombeCell Cycle ProteinsCytoskeletal ProteinsFOR3 protein, S pombeForminsMicrofilament ProteinsSchizosaccharomyces pombe Proteins

Identifiers

PMID24560576
PMCPMC3979332
OpenAlexW2078684403

What OpenQuestion holds

Textmetadata
LicenceTDM
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.