Evidence map›Paper›PMID 22431638›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2012

Crystal structure of a complete ternary complex of T-cell receptor, peptide-MHC, and CD4.

Yiyuan Yin, Xin Xiang Wang, Roy A Mariuzza

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 84 papers.

0numbers the graph read from it
0cells of the map it votes in
84citing papers in PubMed
5.4field-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

84 citing papers in PubMed, 142 citations in OpenAlex.

  1. Review
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24 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 at 2 institutions in 2 countries.

Yiyuan YinW. M. Keck Laboratory for Structural Biology, Institute for Bioscience and Biotechnology Research, University of Maryland, Rockville, MD 20850, USA.
Xin Xiang Wang
Roy A Mariuzza
Institute for Bioscience and Biotechnology ResearchUniversity of Maryland, College Park · US

Funding

STRUCTURE AND FUNCTION OF T CELL ANTIGEN RECEPTORSR37AI036900 · NIAID · UNIVERSITY OF MD BIOTECHNOLOGY INSTITUTE · PI MARIUZZA, ROY A · 2000 to 2009
$3.2M
Recognition of Self and Mutated Self by Autoimmune and Tumor-Specific TCRsR01AI073654 · NIAID · UNIV OF MARYLAND, COLLEGE PARK · PI MARIUZZA, ROY A, TOPALIAN, SUZANNE LOUISE · 2008 to 2012
$2.0M
STRUCTURE AND FUNCTION OF T CELL ANTIGEN RECEPTORSR01AI036900 · NIAID · UNIV OF MARYLAND, COLLEGE PARK · PI MARIUZZA, ROY A · 1995 to 2014
$1.8M
NIAID NIH HHS AI036900NIAID NIH HHS AI073654NIAID NIH HHS R01 AI036900NIAID NIH HHS R01 AI073654NIAID NIH HHS R37 AI036900
6 · The paper itself

Abstract

Adaptive immunity depends on specific recognition by a T-cell receptor (TCR) of an antigenic peptide bound to a major histocompatibility complex (pMHC) molecule on an antigen-presenting cell (APC). In addition, T-cell activation generally requires binding of this same pMHC to a CD4 or CD8 coreceptor. Here, we report the structure of a complete TCR-pMHC-CD4 ternary complex involving a human autoimmune TCR, a myelin-derived self-peptide bound to HLA-DR4, and CD4. The complex resembles a pointed arch in which TCR and CD4 are each tilted ∼65° relative to the T-cell membrane. By precluding direct contacts between TCR and CD4, the structure explains how TCR and CD4 on the T cell can simultaneously, yet independently, engage the same pMHC on the APC. The structure, in conjunction with previous mutagenesis data, places TCR-associated CD3εγ and CD3εδ subunits, which transmit activation signals to the T cell, inside the TCR-pMHC-CD4 arch, facing CD4. By establishing anchor points for TCR and CD4 on the T-cell membrane, the complex provides a basis for understanding how the CD4 coreceptor focuses TCR on MHC to guide TCR docking on pMHC during thymic T-cell selection.

Indexed as

Major Histocompatibility ComplexCD4 AntigensCrystallography, X-RayHumansModels, MolecularMolecular StructurePeptidesReceptors, Antigen, T-CellCD4 AntigensPeptidesReceptors, Antigen, T-Cell

Identifiers

PMID22431638
PMCPMC3325661
OpenAlexW2002780937

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.