CD3e molecule, epsilon also known as CD3E is a polypeptide which in humans is encoded by the CD3Egene which resides on chromosome 11.[5][6]
Function
The protein encoded by this gene is the CD3-epsilon polypeptide, which together with CD3-gamma, -delta and -zeta, and the T-cell receptor alpha/beta and gamma/delta heterodimers, forms the T cell receptor-CD3 complex. This complex plays an important role in coupling antigen recognition to several intracellular signal-transduction pathways. The genes encoding the epsilon, gamma and delta polypeptides are located in the same cluster on chromosome 11. The epsilon polypeptide plays an essential role in T-cell development.[7]
Clinical significance
Defects in this gene cause severe immunodeficiency.[8][9] This gene has also been linked to a susceptibility to type I diabetes in women.[10]
^"Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^"Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
^Gold DP, Puck JM, Pettey CL, Cho M, Coligan J, Woody JN, Terhorst C (1986). "Isolation of cDNA clones encoding the 20K non-glycosylated polypeptide chain of the human T-cell receptor/T3 complex". Nature. 321 (6068): 431–4. Bibcode:1986Natur.321..431G. doi:10.1038/321431a0. PMID3012357. S2CID4318166.
^Soudais C, de Villartay JP, Le Deist F, Fischer A, Lisowska-Grospierre B (January 1993). "Independent mutations of the human CD3-epsilon gene resulting in a T cell receptor/CD3 complex immunodeficiency". Nature Genetics. 3 (1): 77–81. doi:10.1038/ng0193-77. PMID8490660. S2CID205341366.
Luzzati AL, Giacomini E, Giordani L, Pugliese O, Viora M, Chersi A (August 1992). "The antigen-specific induction of normal human lymphocytes in vitro is down-regulated by a conserved HIV p24 epitope". Immunology Letters. 33 (3): 307–14. doi:10.1016/0165-2478(92)90078-3. PMID1385321.
Luzzati AL, Pugliese O, Giacomini E, Giordani L, Quintieri F, Hraba T, Mach O, Krchnák V, Vágner J (1990). "Immunoregulatory effect of a synthetic peptide corresponding to a region of protein p24 of HIV". Folia Biologica. 36 (1): 71–7. PMID2111780.
Koning F, Maloy WL, Coligan JE (February 1990). "The implications of subunit interactions for the structure of the T cell receptor-CD3 complex". European Journal of Immunology. 20 (2): 299–305. doi:10.1002/eji.1830200211. PMID2138083. S2CID2180901.
van den Elsen P, Shepley BA, Cho M, Terhorst C (1985). "Isolation and characterization of a cDNA clone encoding the murine homologue of the human 20K T3/T-cell receptor glycoprotein". Nature. 314 (6011): 542–4. Bibcode:1985Natur.314..542V. doi:10.1038/314542a0. PMID2859526. S2CID4321989.
Gold DP, Puck JM, Pettey CL, Cho M, Coligan J, Woody JN, Terhorst C (1986). "Isolation of cDNA clones encoding the 20K non-glycosylated polypeptide chain of the human T-cell receptor/T3 complex". Nature. 321 (6068): 431–4. Bibcode:1986Natur.321..431G. doi:10.1038/321431a0. PMID3012357. S2CID4318166.
Beecher MS, Baiocchi RA, Linett ML, Krajewski CA, Caligiuri MA (May 1994). "Expression of the zeta protein subunit in CD3- NK effectors derived from human thymus". Cellular Immunology. 155 (2): 508–16. doi:10.1006/cimm.1994.1143. PMID7514106.
Luzzati AL, Giacomini E, Giordani L, Viora M, Chersi A, Camponeschi B, Pugliese O (July 1994). "An HIV p24 heptapeptide down-regulates antigen-specific responses in vitro interfering at the level of the T3-Ti complex". Cellular Immunology. 156 (2): 286–95. doi:10.1006/cimm.1994.1175. PMID7517794.
Dianzani U, Bragardo M, Buonfiglio D, Redoglia V, Funaro A, Portoles P, Rojo J, Malavasi F, Pileri A (May 1995). "Modulation of CD4 lateral interaction with lymphocyte surface molecules induced by HIV-1 gp120". European Journal of Immunology. 25 (5): 1306–11. doi:10.1002/eji.1830250526. PMID7539755. S2CID37717142.
Müller B, Cooper L, Terhorst C (January 1995). "Interplay between the human TCR/CD3 epsilon and the B-cell antigen receptor associated Ig-beta (B29)". Immunology Letters. 44 (2–3): 97–103. doi:10.1016/0165-2478(94)00199-2. PMID7541024.
PDB gallery
1xiw: Crystal structure of human CD3-e/d dimer in complex with a UCHT1 single-chain antibody fragment