Evidence map›Paper›PMID 18510928›Full record

ArticleCell2008

Capping protein increases the rate of actin-based motility by promoting filament nucleation by the Arp2/3 complex.

Orkun Akin, R Dyche Mullins

Abstract read
In one paragraph

Article in Cell, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 159 papers.

0numbers the graph read from it
0cells of the map it votes in
159citing 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

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

159 citing papers in PubMed.

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  18. Article
  19. Mechanisms of actin disassembly and turnover.The Journal of cell biology · 2023
    Review
  20. Article

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

2 authors.

Orkun AkinDepartment of Cellular and Molecular Pharmacology, School of Medicine, University of California, San Francisco, San Francisco, CA 94143, USA.
R Dyche Mullins

Funding

Cellular Control:Synthetic Signaling/Motility (RMI)PN2EY016546 · NEI · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI LIM, WENDELL A · 2005 to 2014
$16.0M
MECHANISMS OF ARP2/3 ACTIVATION AND FUNCTIONR01GM061010 · NIGMS · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI MULLINS, R DYCHE · 2000 to 2015
$3.8M
Howard Hughes Medical InstituteNEI NIH HHS PN2 EY016546NIGMS NIH HHS R01 GM061010NIGMS NIH HHS R01GM61010
6 · The paper itself

Abstract

Capping protein (CP) is an integral component of Arp2/3-nucleated actin networks that drive amoeboid motility. Increasing the concentration of capping protein, which caps barbed ends of actin filaments and prevents elongation, increases the rate of actin-based motility in vivo and in vitro. We studied the synergy between CP and Arp2/3 using an in vitro actin-based motility system reconstituted from purified proteins. We find that capping protein increases the rate of motility by promoting more frequent filament nucleation by the Arp2/3 complex and not by increasing the rate of filament elongation as previously suggested. One consequence of this coupling between capping and nucleation is that, while the rate of motility depends strongly on the concentration of CP and Arp2/3, the net rate of actin assembly is insensitive to changes in either factor. By reorganizing their architecture, dendritic actin networks harness the same assembly kinetics to drive different rates of motility.

Indexed as

Cell MovementActin Capping ProteinsActin CytoskeletonActin Depolymerizing FactorsActin-Related Protein 2-3 ComplexActinsAnimalsBacterial ProteinsBrain ChemistryCattleCell-Free SystemKineticsListeria monocytogenesMembrane ProteinsMicrospheresPolystyrenesactA protein, Listeria monocytogenesActin Capping ProteinsActin Depolymerizing FactorsActin-Related Protein 2-3 ComplexActinsBacterial ProteinsMembrane ProteinsPolystyrenesProfilins

Identifiers

PMID18510928
PMCPMC2576297

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.