Evidence map›Paper›PMID 30534123›Full record

ReviewFrontiers in immunology2018

Structural Immunology of Complement Receptors 3 and 4.

Thomas Vorup-Jensen, Rasmus Kjeldsen Jensen

Open access · goldAbstract readReview
In one paragraph

Review in Frontiers in immunology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 86 papers.

0numbers the graph read from it
0cells of the map it votes in
86citing papers in PubMed
5.6field-weighted citation impact, top 3% 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

86 citing papers in PubMed, 129 citations in OpenAlex.

  1. Trial
  2. Article
  3. Functional genomic profiling of schizophrenia-associated genes reveals key microglial regulators.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026
    Article
  4. TARGETING THE CAPSULE OFbioRxiv : the preprint server for biology · 2026
    Article
  5. Review
  6. Review
  7. Article
  8. Complement system in cancer: friend or foe of immunotherapy.Journal for immunotherapy of cancer · 2026
    Review
  9. Article
  10. C3 inFrontiers in cellular and infection microbiology · 2026
    Article
  11. Review
  12. Virulence · 2025
    Article
  13. Review
  14. Article
  15. Article
  16. Microglia contribute to bipolar depression through Serinc2-dependent phospholipid synthesis.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  17. Article
  18. Article
  19. Article
  20. Article

26 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

2 authors at 1 institution in 1 country.

Thomas Vorup-JensenBiophysical Immunology Laboratory, Department of Biomedicine, Aarhus University, Aarhus, Denmark.
Rasmus Kjeldsen JensenDepartment of Molecular Biology and Genetics-Structural Biology, Aarhus University, Aarhus, Denmark.
Aarhus University · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Complement receptors (CR) 3 and 4 belong to the family of beta-2 (CD18) integrins. CR3 and CR4 are often co-expressed in the myeloid subsets of leukocytes, but they are also found in NK cells and activated T and B lymphocytes. The heterodimeric ectodomain undergoes considerable conformational change in order to switch the receptor from a structurally bent, ligand-binding in-active state into an extended, ligand-binding active state. CR3 binds the C3d fragment of C3 in a way permitting CR2 also to bind concomitantly. This enables a hand-over of complement-opsonized antigens from the cell surface of CR3-expressing macrophages to the CR2-expressing B lymphocytes, in consequence acting as an antigen presentation mechanism. As a more enigmatic part of their functions, both CR3 and CR4 bind several structurally unrelated proteins, engineered peptides, and glycosaminoglycans. No consensus motif in the proteinaceous ligands has been established. Yet, the experimental evidence clearly suggest that the ligands are primarily, if not entirely, recognized by a single site within the receptors, namely the metal-ion dependent adhesion site (MIDAS). Comparison of some recent identified ligands points to CR3 as inclined to bind positively charged species, while CR4, by contrast, binds strongly negative-charged species, in both cases with the critical involvement of deprotonated, acidic groups as ligands for the Mg

Indexed as

Integrin alphaXbeta2Macrophage-1 AntigenAnimalsB-LymphocytesGene Expression RegulationHumansKiller Cells, NaturalMacrophagesStructure-Activity RelationshipIntegrin alphaXbeta2Macrophage-1 Antigencell adhesioncomplementcomplement receptorsdivalent metal ionsdrug repurposinginnate immunityintegrinsvon willebrand facor A (VWA) domain

Identifiers

PMID30534123
PMCPMC6275225
OpenAlexW2902505080

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.