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Involvement of Both Major Histocompatibility Complex Class II Alpha and Beta Chains in CD4 Function Indicates a Role for Ordered Oligomerization in T Cell Activation

Overview
Journal J Exp Med
Date 1995 Sep 1
PMID 7650484
Citations 31
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Abstract

CD4 is a membrane glycoprotein on T lymphocytes that binds to the same peptide:major histocompatibility complex (MHC) class II molecule recognized by the antigen-specific receptor (TCR), thereby stabilizing interactions between the TCR and peptide;MHC class II complexes and promoting the localization of the src family tyrosine kinase p56lck into the receptor complex. Previous studies identified a solvent-exposed loop on the class II beta 2 domain necessary for binding to CD4 and for eliciting CD4 coreceptor activity. Here, we demonstrate that a second surface-exposed segment of class II is also critical for CD4 function. This site is in the alpha 2 domain, positioned in single class II heterodimers in such a way that it cannot simultaneously interact with the same CD4 molecule as the beta 2 site. The ability of mutations at either site to diminish CD4 function therefore indicates that specifically organized CD4 and/or MHC class II oligomers play a critical role in coreceptor-dependent T cell activation.

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References
1.
Kappler J, Skidmore B, White J, Marrack P . Antigen-inducible, H-2-restricted, interleukin-2-producing T cell hybridomas. Lack of independent antigen and H-2 recognition. J Exp Med. 1981; 153(5):1198-214. PMC: 2186156. DOI: 10.1084/jem.153.5.1198. View

2.
Lemke H, Hammerling G, Hammerling U . Fine specificity analysis with monoclonal antibodies of antigens controlled by the major histocompatibility complex and by the Qa/TL region in mice. Immunol Rev. 1979; 47:175-206. DOI: 10.1111/j.1600-065x.1979.tb00293.x. View

3.
Shackelford D, Kaufman J, Korman A, Strominger J . HLA-DR antigens: structure, separation of subpopulations, gene cloning and function. Immunol Rev. 1982; 66:133-87. DOI: 10.1111/j.1600-065x.1982.tb00437.x. View

4.
Margulies D, Evans G, Ozato K, Camerini-Otero R, Tanaka K, Appella E . Expression of H-2Dd and H-2Ld mouse major histocompatibility antigen genes in L cells after DNA-mediated gene transfer. J Immunol. 1983; 130(1):463-70. View

5.
Cohen L, Riggs A, Morin C, Itakura K, Richards J . Oligonucleotide-directed mutagenesis as a general and powerful method for studies of protein function. Proc Natl Acad Sci U S A. 1982; 79(21):6409-13. PMC: 347135. DOI: 10.1073/pnas.79.21.6409. View