Evidence map›Paper›PMID 22178926›Full record

ArticleNature2011

Basic amino-acid side chains regulate transmembrane integrin signalling.

Chungho Kim, Thomas Schmidt, Eun-Gyung Cho, Feng Ye, Tobias S Ulmer, Mark H Ginsberg

Erratum issuedAbstract read
In one paragraph

Article in Nature, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 74 papers.

0numbers the graph read from it
0cells of the map it votes in
74citing 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

74 citing papers in PubMed.

  1. Review
  2. Review
  3. Functional unfolding of the integrin αX transmembrane helix.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  4. Integrin Alpha8 Beta1 (81): An In-Depth Review of an Overlooked RGD-Binding Receptor.Biocell : official journal of the Sociedades Latinoamericanas de Microscopia Electronica ... et. al · 2025
    Article
  5. Review
  6. Article
  7. Article
  8. Targeting integrin pathways: mechanisms and advances in therapy.Signal transduction and targeted therapy · 2023
    Review
  9. Review
  10. Article
  11. Review
  12. Article
  13. Visualization of integrin molecules by fluorescence imaging and techniques.Biocell : official journal of the Sociedades Latinoamericanas de Microscopia Electronica ... et. al · 2021
    Article
  14. Review
  15. Review
  16. Review
  17. Roles of Membrane Domains in Integrin-Mediated Cell Adhesion.International journal of molecular sciences · 2020
    Review
  18. Article
  19. Chapter 22: Structural and signaling functions of integrins.Biochimica et biophysica acta. Biomembranes · 2020
    Review
  20. Article

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

4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

6 authors.

Chungho KimDepartment of Medicine, University of California, San Diego, La Jolla, California 92093, USA.
Thomas Schmidt
Eun-Gyung Cho
Feng Ye
Tobias S Ulmer
Mark H Ginsberg

Funding

The Interaction of TPO and Integrins in Hematopoiesis CellsP01HL078784 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI GINSBERG, MARK HOWARD · 2005 to 2019
$28.3M
TYROSINE KINASE C-ABL AND BCR-ABL IN INTEGRIN DEPENDENT SIGNALINGP01HL057900 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI SHATTIL, SANFORD J · 1997 to 2012
$17.4M
Regulation of Integrin Alpha4 BetalR01AR027214 · NIAMS · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI GINSBERG, MARK HOWARD · 1986 to 2010
$3.5M
KRIT1 and Vascular IntegrityR01HL106489 · NHLBI · UNIVERSITY OF CALIFORNIA, SAN DIEGO · PI GINSBERG, MARK HOWARD · 2011 to 2017
$2.3M
Mechanisms of Integrin Receptor Transmembrane SignalingR01HL089726 · NHLBI · UNIVERSITY OF SOUTHERN CALIFORNIA · PI ULMER, TOBIAS SEBASTIAN · 2008 to 2012
$1.8M
PLATELETS IN RHEUMATIC DISEASER37AR027214 · NIAMS · SCRIPPS RESEARCH INSTITUTE · PI GINSBERG, MARK HOWARD · 1991 to 2000
$279k
NHLBI NIH HHS HL078784NHLBI NIH HHS HL089726NHLBI NIH HHS HL57900NHLBI NIH HHS P01 HL057900NHLBI NIH HHS P01 HL078784NHLBI NIH HHS R01 HL089726NHLBI NIH HHS R01 HL106489NIAMS NIH HHS AR27214NIAMS NIH HHS R01 AR027214NIAMS NIH HHS R37 AR027214
6 · The paper itself

Abstract

Side chains of Lys/Arg near transmembrane domain (TMD) membrane-water interfaces can 'snorkel', placing their positive charge near negatively charged phospholipid head groups; however, snorkelling's functional effects are obscure. Integrin β TMDs have such conserved basic amino acids. Here we use NMR spectroscopy to show that integrin β(3)(Lys 716) helps determine β(3) TMD topography. The α(ΙΙb)β(3) TMD structure indicates that precise β(3) TMD crossing angles enable the assembly of outer and inner membrane 'clasps' that hold the αβ TMD together to limit transmembrane signalling. Mutation of β(3)(Lys 716) caused dissociation of α(ΙΙb)β(3) TMDs and integrin activation. To confirm that altered topography of β(3)(Lys 716) mutants activated α(ΙΙb)β(3), we used directed evolution of β(3)(K716A) to identify substitutions restoring default state. Introduction of Pro(711) at the midpoint of β(3) TMD (A711P) increased α(ΙΙb)β(3) TMD association and inactivated integrin α(ΙΙb)β(3)(A711P,K716A). β(3)(Pro 711) introduced a TMD kink of 30 ± 1° precisely at the border of the outer and inner membrane clasps, thereby decoupling the tilt between these segments. Thus, widely occurring snorkelling residues in TMDs can help maintain TMD topography and membrane-embedding, thereby regulating transmembrane signalling.

Indexed as

Signal TransductionAmino Acid SequenceAnimalsCell MembraneCHO CellsCricetinaeDirected Molecular EvolutionGenetic Complementation TestIntegrinsLysineMembrane LipidsModels, MolecularMolecular Sequence DataMutationNuclear Magnetic Resonance, BiomolecularPliabilityIntegrinsLysineMembrane LipidsProline

Identifiers

PMID22178926
PMCPMC3257387

What OpenQuestion holds

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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.