Related Experiment Videos
Some hints concerning the shape of T-cell receptor structures.
B Rubin1, L Alibaud, A Huchenq-Champagne
1Unité de Physiopathologie Cellulaire et Moléculaire, CNRS UPR-2163, Hôpital Purpan, 31059 Toulouse Cedex 03, France. rubin@immgen.cnrs.fr
Scandinavian Journal of Immunology
|March 19, 2002
Summary
This review explores T-cell receptor (TCR) assembly, proposing an alternative pathway and structure for TCR/CD3 complexes. Experimental data is limited, but quantitative cytofluometry suggests specific CD3 chain ratios within TCR complexes.
Area of Science:
- Immunology
- Molecular Biology
- Cell Biology
Background:
- T-cell receptor (TCR) assembly and structure models exist, but experimental validation is scarce.
- The minimal TCR/CD3 complex is proposed as TCRalphabeta/CD3deltaepsilon,gammaepsilon/zeta2, with potential for membrane multimers.
- Quantitative cytofluometry suggests a 3:2 ratio of CD3epsilon to TCRbeta/TCRdelta chains.
Purpose of the Study:
- To compare TCR/CD3 assembly in pre-TCR, TCRgammadelta, and TCRalphabeta complexes.
- To analyze the reactivity of antibodies against extracellular domains of CD3delta chains.
- To propose an alternative TCR/CD3 assembly pathway and structure based on available data.
Main Methods:
- Review and comparison of existing models and experimental data on TCR/CD3 complexes.
- Analysis of quantitative cytofluometry data regarding CD3 chain stoichiometry.
- Consideration of antibody reactivity against extracellular CD3 domains.
Main Results:
- Existing models for TCR/CD3 assembly lack sufficient experimental support.
- Quantitative cytofluometry data suggests a specific stoichiometry of CD3 chains within the TCR complex.
- Antibody reactivity analysis provides insights into the extracellular components of CD3 chains.
Conclusions:
- The current understanding of TCR/CD3 assembly requires further experimental investigation.
- An alternative assembly pathway and structure for TCR/CD3 complexes are suggested.
- Future studies should focus on validating proposed models with direct experimental evidence.