Evidence map›Paper›PMID 26554011›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2015

Allosteric N-WASP activation by an inter-SH3 domain linker in Nck.

Julia Okrut, Sumit Prakash, Qiong Wu, Mark J S Kelly, Jack Taunton

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
1.4field-weighted citation impact, top 20% 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

20 citing papers in PubMed, 34 citations in OpenAlex.

  1. Review
  2. Electrical Forces Improve Memory in Old Age.Reviews of physiology, biochemistry and pharmacology · 2025
    Review
  3. Article
  4. Article
  5. Article
  6. NCK1 Modulates Neuronal Actin Dynamics and Promotes Dendritic Spine, Synapse, and Memory Formation.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2023
    Article
  7. Review
  8. Article
  9. Nck adaptors at a glance.Journal of cell science · 2021
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Review
  20. Conserved interdomain linker promotes phase separation of the multivalent adaptor protein Nck.Proceedings of the National Academy of Sciences of the United States of America · 2015
    Article
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 3 institutions in 1 country.

Julia OkrutDepartment of Cellular and Molecular Pharmacology, University of California, San Francisco, CA 94158; The Howard Hughes Medical Institute Summer Institute, Marine Biological Laboratory, Woods Hole, MA 02543;
Sumit PrakashDepartment of Cellular and Molecular Pharmacology, University of California, San Francisco, CA 94158;
Qiong WuDepartment of Biophysics, University of Texas Southwestern Medical Center, Dallas, TX 75390;
Mark J S KellyDepartment of Pharmaceutical Chemistry, University of California, San Francisco, CA 94158.
Jack TauntonDepartment of Cellular and Molecular Pharmacology, University of California, San Francisco, CA 94158; The Howard Hughes Medical Institute Summer Institute, Marine Biological Laboratory, Woods Hole, MA 02543; jack.taunton@ucsf.edu.
University of California, San Francisco · USMarine Biological Laboratory · USThe University of Texas Southwestern Medical Center · US

Funding

Acquisition of upgrades for 800 MHz NMR consoleS10OD018027 · OD · UT SOUTHWESTERN MEDICAL CENTER · PI RIZOREY, JOSE · 2014 to 2014
$376k
Howard Hughes Medical InstituteNIH HHS 1S10OD018027-01NIH HHS S10 OD018027
6 · The paper itself

Abstract

Actin filament networks assemble on cellular membranes in response to signals that locally activate neural Wiskott-Aldrich-syndrome protein (N-WASP) and the Arp2/3 complex. An inactive conformation of N-WASP is stabilized by intramolecular contacts between the GTPase binding domain (GBD) and the C helix of the verprolin-homology, connector-helix, acidic motif (VCA) segment. Multiple SH3 domain-containing adapter proteins can bind and possibly activate N-WASP, but it remains unclear how such binding events relieve autoinhibition to unmask the VCA segment and activate the Arp2/3 complex. Here, we have used purified components to reconstitute a signaling cascade driven by membrane-localized Src homology 3 (SH3) adapters and N-WASP, resulting in the assembly of dynamic actin networks. Among six SH3 adapters tested, Nck was the most potent activator of N-WASP-driven actin assembly. We identify within Nck a previously unrecognized activation motif in a linker between the first two SH3 domains. This linker sequence, reminiscent of bacterial virulence factors, directly engages the N-WASP GBD and competes with VCA binding. Our results suggest that animals, like pathogenic bacteria, have evolved peptide motifs that allosterically activate N-WASP, leading to localized actin nucleation on cellular membranes.

Indexed as

src Homology DomainsActinsAdaptor Proteins, Signal TransducingAllosteric RegulationAmino Acid MotifsAmino Acid SequenceAnimalsHumansHydrophobic and Hydrophilic InteractionsMagnetic Resonance SpectroscopyMembrane ProteinsMiceMolecular Sequence DataMutant ProteinsOncogene ProteinsProtein BindingActinsAdaptor Proteins, Signal TransducingMembrane ProteinsMutant ProteinsNck proteinnephrinOncogene ProteinsWiskott-Aldrich Syndrome Protein, Neuronalactin cytoskeletonNckN-WASPSH3 adaptersignal transduction

Identifiers

PMID26554011
PMCPMC4664294
OpenAlexW2125837124

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.