Evidence map›Paper›PMID 23103871›Full record

ArticleNature2012

Accelerated disassembly of IgE-receptor complexes by a disruptive macromolecular inhibitor.

Beomkyu Kim, Alexander Eggel, Svetlana S Tarchevskaya, Monique Vogel, Heino Prinz, Theodore S Jardetzky

Abstract read
In one paragraph

Article in Nature, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.

0numbers the graph read from it
0cells of the map it votes in
51citing papers in PubMed
5.7field-weighted citation impact, top 4% 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

51 citing papers in PubMed, 105 citations in OpenAlex.

  1. Antibodies targeting a shared epitope exploit IgE allostery to drive distinct functional outcomes.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  2. Article
  3. Article
  4. Article
  5. Review
  6. Review
  7. Article
  8. Human Lung Mast Cells: Therapeutic Implications in Asthma.International journal of molecular sciences · 2022
    Review
  9. Review
  10. Review
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Review
  17. Review
  18. Article
  19. Review
  20. 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

6 authors at 3 institutions in 3 countries.

Beomkyu KimDepartment of Structural Biology, Stanford University School of Medicine, Stanford, California 94305, USA.
Alexander Eggel
Svetlana S Tarchevskaya
Monique Vogel
Heino Prinz
Theodore S Jardetzky
Stanford University · USUniversity of Bern · CHMax Planck Institute of Molecular Physiology · DE

Funding

Structural Studies of IgE ReceptorsR37AI038972 · NIAID · STANFORD UNIVERSITY · PI JARDETZKY, THEODORE S · 2001 to 2010
$3.0M
Development of an IgE:Receptor Fluorescence Assay For High Throughput ScreeningR21NS074067 · NINDS · STANFORD UNIVERSITY · PI JARDETZKY, THEODORE S · 2011 to 2011
$158k
SPECIFICITY OF INDIVIDUAL HELPER T LYMPHOCYTESR01AI018939 · NIAID · NORTHWESTERN UNIVERSITY · PI PIERCE, SUSAN K. · 1985 to 1989
–
SPECIFICITY OF INDIVIDUAL HELPER T LYMPHOCYTESR37AI018939 · NIAID · NORTHWESTERN UNIVERSITY · PI PIERCE, SUSAN K. · 1990 to 1999
–
NIAID NIH HHS AI-18939NIAID NIH HHS R37 AI038972NINDS NIH HHS R21 NS074067
6 · The paper itself

Abstract

IgE antibodies bind the high-affinity IgE Fc receptor (FcεRI), found primarily on mast cells and basophils, and trigger inflammatory cascades of the allergic response. Inhibitors of IgE-FcεRI binding have been identified and an anti-IgE therapeutic antibody (omalizumab) is used to treat severe allergic asthma. However, preformed IgE-FcεRI complexes that prime cells before allergen exposure dissociate extremely slowly and cannot be disrupted by strictly competitive inhibitors. IgE-Fc conformational flexibility indicated that inhibition could be mediated by allosteric or other non-classical mechanisms. Here we demonstrate that an engineered protein inhibitor, DARPin E2_79 (refs 9, 10, 11), acts through a non-classical inhibition mechanism, not only blocking IgE-FcεRI interactions, but actively stimulating the dissociation of preformed ligand-receptor complexes. The structure of the E2_79-IgE-Fc(3-4) complex predicts the presence of two non-equivalent E2_79 sites in the asymmetric IgE-FcεRI complex, with site 1 distant from the receptor and site 2 exhibiting partial steric overlap. Although the structure is indicative of an allosteric inhibition mechanism, mutational studies and quantitative kinetic modelling indicate that E2_79 acts through a facilitated dissociation mechanism at site 2 alone. These results demonstrate that high-affinity IgE-FcεRI complexes can be actively dissociated to block the allergic response and suggest that protein-protein complexes may be more generally amenable to active disruption by macromolecular inhibitors.

Indexed as

Allosteric RegulationAnkyrin RepeatBinding SitesCrystallography, X-RayFluorescenceImmunoglobulin EKineticsLigandsModels, MolecularMutant ProteinsMutationProtein BindingProtein Structure, TertiaryReceptors, IgERecombinant Fusion ProteinsSurface Plasmon ResonanceDARPin E2 79Immunoglobulin ELigandsMutant ProteinsReceptors, IgERecombinant Fusion Proteins

Identifiers

PMID23103871
PMCPMC3504642
OpenAlexW1996855351

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.