Evidence map›Paper›PMID 23798730›Full record

ArticleThe Journal of cell biology2013

Complete integrin headpiece opening in eight steps.

Jieqing Zhu, Jianghai Zhu, Timothy A Springer

Abstract read
In one paragraph

Article in The Journal of cell biology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 127 papers.

0numbers the graph read from it
0cells of the map it votes in
127citing 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

127 citing papers in PubMed.

  1. Article
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  5. Prediction of αBiophysical journal · 2025
    Article
  6. MnBiophysical journal · 2025
    Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Review
  12. Review
  13. Article
  14. Article
  15. Integrins as Drug Targets in Vascular and Related Diseases.International journal of drug discovery and pharmacology · 2024
    Article
  16. Review
  17. Review
  18. Integrin αProceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  19. Family-wide analysis of integrin structures predicted by AlphaFold2.bioRxiv : the preprint server for biology · 2023
    Article
  20. Review

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

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

3 authors.

Jieqing ZhuDepartment of Biological Chemistry and Molecular Pharmacology, Program in Cellular and Molecular Medicine, Children's Hospital Boston, Harvard Medical School, Boston, MA 02115, USA.
Jianghai Zhu
Timothy A Springer

Funding

Structures of Alpha 4 Integrins, Ligands and AntagonistsP01HL103526 · NHLBI · IMMUNE DISEASE INSTITUTE, INC. · PI SPRINGER, TIMOTHY A · 2011 to 2015
$11.1M
NHLBI NIH HHS HL-103526NHLBI NIH HHS P01 HL103526
6 · The paper itself

Abstract

Carefully soaking crystals with Arg-Gly-Asp (RGD) peptides, we captured eight distinct RGD-bound conformations of the αIIbβ3 integrin headpiece. Starting from the closed βI domain conformation, we saw six intermediate βI conformations and finally the fully open βI with the hybrid domain swung out in the crystal lattice. The β1-α1 backbone that hydrogen bonds to the Asp side chain of RGD was the first element to move followed by adjacent to metal ion-dependent adhesion site Ca(2+), α1 helix, α1' helix, β6-α7 loop, α7 helix, and hybrid domain. We define in atomic detail how conformational change was transmitted over long distances in integrins, 40 Å from the ligand binding site to the opposite end of the βI domain and 80 Å to the far end of the hybrid domain. During these movements, RGD slid in its binding groove toward αIIb, and its Arg side chain became ordered. RGD concentration requirements in soaking suggested a >200-fold higher affinity after opening. The thermodynamic cycle shows how higher affinity pays the energetic cost of opening.

Indexed as

AnimalsBinding SitesCHO CellsCricetinaeCrystallography, X-RayLigandsModels, MolecularPlatelet Glycoprotein GPIIb-IIIa ComplexProtein Structure, TertiaryLigandsPlatelet Glycoprotein GPIIb-IIIa Complex

Identifiers

PMID23798730
PMCPMC3691460

What OpenQuestion holds

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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.