- EMDB-28572: CryoEM structure of PN45428 TCR-CD3 in complex with HLA-A2 MAGEA4 -
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基本情報
登録情報
データベース: EMDB / ID: EMD-28572
タイトル
CryoEM structure of PN45428 TCR-CD3 in complex with HLA-A2 MAGEA4
マップデータ
試料
複合体: PN45428 TCR-CD3 complex bound to HLA-A2 MAGEA4 (230-239) in the presence of 2M2 Fab
タンパク質・ペプチド: x 9種
リガンド: x 2種
キーワード
TCR / receptor / membrane protein / CD3 / MHC / HLA / IMMUNE SYSTEM
機能・相同性
機能・相同性情報
regulation of lymphocyte apoptotic process / gamma-delta T cell receptor complex / Fc-gamma receptor III complex / T cell anergy / positive regulation of cell-cell adhesion mediated by integrin / positive regulation of T cell anergy / gamma-delta T cell activation / Fc-gamma receptor signaling pathway / CD4-positive, alpha-beta T cell proliferation / negative thymic T cell selection ...regulation of lymphocyte apoptotic process / gamma-delta T cell receptor complex / Fc-gamma receptor III complex / T cell anergy / positive regulation of cell-cell adhesion mediated by integrin / positive regulation of T cell anergy / gamma-delta T cell activation / Fc-gamma receptor signaling pathway / CD4-positive, alpha-beta T cell proliferation / negative thymic T cell selection / positive regulation of CD4-positive, alpha-beta T cell proliferation / alpha-beta T cell receptor complex / positive thymic T cell selection / positive regulation of protein localization to cell surface / signal complex assembly / Nef and signal transduction / positive regulation of cell-matrix adhesion / T cell receptor complex / smoothened signaling pathway / establishment or maintenance of cell polarity / Translocation of ZAP-70 to Immunological synapse / Phosphorylation of CD3 and TCR zeta chains / positive regulation of interleukin-4 production / antigen processing and presentation of peptide antigen via MHC class I / dendrite development / protein complex oligomerization / alpha-beta T cell activation / Generation of second messenger molecules / FCGR activation / immunological synapse / Co-inhibition by PD-1 / Role of phospholipids in phagocytosis / T cell receptor binding / T cell costimulation / positive regulation of cell cycle / positive regulation of T cell proliferation / positive regulation of interleukin-2 production / positive regulation of calcium-mediated signaling / FCGR3A-mediated IL10 synthesis / protein tyrosine kinase binding / cell surface receptor protein tyrosine kinase signaling pathway / T cell activation / negative regulation of receptor binding / early endosome lumen / Nef mediated downregulation of MHC class I complex cell surface expression / cerebellum development / DAP12 interactions / transferrin transport / cellular response to iron ion / lumenal side of endoplasmic reticulum membrane / Endosomal/Vacuolar pathway / negative regulation of smoothened signaling pathway / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / FCGR3A-mediated phagocytosis / peptide antigen assembly with MHC class II protein complex / apoptotic signaling pathway / antigen processing and presentation of exogenous protein antigen via MHC class Ib, TAP-dependent / cellular response to iron(III) ion / MHC class II protein complex / negative regulation of forebrain neuron differentiation / calcium-mediated signaling / clathrin-coated endocytic vesicle membrane / ER to Golgi transport vesicle membrane / peptide antigen assembly with MHC class I protein complex / regulation of erythrocyte differentiation / regulation of iron ion transport / response to molecule of bacterial origin / MHC class I peptide loading complex / HFE-transferrin receptor complex / T cell mediated cytotoxicity / antigen processing and presentation of endogenous peptide antigen via MHC class I / positive regulation of T cell cytokine production / antigen processing and presentation of exogenous peptide antigen via MHC class II / positive regulation of immune response / MHC class I protein complex / positive regulation of T cell activation / peptide antigen binding / Regulation of actin dynamics for phagocytic cup formation / positive regulation of receptor-mediated endocytosis / SH3 domain binding / negative regulation of neurogenesis / positive regulation of T cell mediated cytotoxicity / cellular response to nicotine / multicellular organismal-level iron ion homeostasis / histone deacetylase binding / Modulation by Mtb of host immune system / specific granule lumen / positive regulation of type II interferon production / phagocytic vesicle membrane / recycling endosome membrane / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / Interferon gamma signaling / negative regulation of epithelial cell proliferation / MHC class II protein complex binding / Cargo recognition for clathrin-mediated endocytosis / Downstream TCR signaling / cell-cell junction / late endosome membrane / sensory perception of smell / transmembrane signaling receptor activity 類似検索 - 分子機能
ジャーナル: Nat Commun / 年: 2023 タイトル: Structural analysis of cancer-relevant TCR-CD3 and peptide-MHC complexes by cryoEM. 著者: Kei Saotome / Drew Dudgeon / Kiersten Colotti / Michael J Moore / Jennifer Jones / Yi Zhou / Ashique Rafique / George D Yancopoulos / Andrew J Murphy / John C Lin / William C Olson / Matthew C Franklin / 要旨: The recognition of antigenic peptide-MHC (pMHC) molecules by T-cell receptors (TCR) initiates the T-cell mediated immune response. Structural characterization is key for understanding the specificity ...The recognition of antigenic peptide-MHC (pMHC) molecules by T-cell receptors (TCR) initiates the T-cell mediated immune response. Structural characterization is key for understanding the specificity of TCR-pMHC interactions and informing the development of therapeutics. Despite the rapid rise of single particle cryoelectron microscopy (cryoEM), x-ray crystallography has remained the preferred method for structure determination of TCR-pMHC complexes. Here, we report cryoEM structures of two distinct full-length α/β TCR-CD3 complexes bound to their pMHC ligand, the cancer-testis antigen HLA-A2/MAGEA4 (230-239). We also determined cryoEM structures of pMHCs containing MAGEA4 (230-239) peptide and the closely related MAGEA8 (232-241) peptide in the absence of TCR, which provided a structural explanation for the MAGEA4 preference displayed by the TCRs. These findings provide insights into the TCR recognition of a clinically relevant cancer antigen and demonstrate the utility of cryoEM for high-resolution structural analysis of TCR-pMHC interactions.