+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-28572 | |||||||||
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タイトル | CryoEM structure of PN45428 TCR-CD3 in complex with HLA-A2 MAGEA4 | |||||||||
マップデータ | ||||||||||
試料 |
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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 T cell anergy / positive regulation of cell-cell adhesion mediated by integrin / gamma-delta T cell activation / CD4-positive, alpha-beta T cell proliferation / negative thymic T cell selection / Fc-gamma receptor signaling pathway ...regulation of lymphocyte apoptotic process / gamma-delta T cell receptor complex / Fc-gamma receptor III complex / T cell anergy / positive regulation of T cell anergy / positive regulation of cell-cell adhesion mediated by integrin / gamma-delta T cell activation / CD4-positive, alpha-beta T cell proliferation / negative thymic T cell selection / Fc-gamma receptor signaling pathway / positive regulation of CD4-positive, alpha-beta T cell proliferation / alpha-beta T cell receptor complex / positive regulation of protein localization to cell surface / positive thymic T cell selection / Nef and signal transduction / signal complex assembly / positive regulation of cell-matrix adhesion / T cell receptor complex / smoothened signaling pathway / establishment or maintenance of cell polarity / positive regulation of interleukin-4 production / Translocation of ZAP-70 to Immunological synapse / Phosphorylation of CD3 and TCR zeta chains / dendrite development / protein complex oligomerization / alpha-beta T cell activation / FCGR activation / Generation of second messenger molecules / immunological synapse / PD-1 signaling / positive regulation of cell cycle / Role of phospholipids in phagocytosis / T cell receptor binding / cell surface receptor protein tyrosine kinase signaling pathway / positive regulation of T cell proliferation / negative regulation of smoothened signaling pathway / T cell costimulation / positive regulation of interleukin-2 production / positive regulation of calcium-mediated signaling / protein tyrosine kinase binding / FCGR3A-mediated IL10 synthesis / cerebellum development / T cell activation / positive regulation of ferrous iron binding / positive regulation of transferrin receptor binding / positive regulation of receptor binding / early endosome lumen / Nef mediated downregulation of MHC class I complex cell surface expression / negative regulation of receptor binding / DAP12 interactions / apoptotic signaling pathway / antigen processing and presentation of endogenous peptide antigen via MHC class Ib / antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-independent / cellular response to iron ion / Endosomal/Vacuolar pathway / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / FCGR3A-mediated phagocytosis / lumenal side of endoplasmic reticulum membrane / calcium-mediated signaling / cellular response to iron(III) ion / antigen processing and presentation of exogenous protein antigen via MHC class Ib, TAP-dependent / clathrin-coated endocytic vesicle membrane / negative regulation of forebrain neuron differentiation / regulation of erythrocyte differentiation / peptide antigen assembly with MHC class I protein complex / ER to Golgi transport vesicle membrane / 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 / positive regulation of T cell cytokine production / antigen processing and presentation of endogenous peptide antigen via MHC class I / MHC class I protein complex / Regulation of actin dynamics for phagocytic cup formation / SH3 domain binding / histone deacetylase binding / negative regulation of neurogenesis / positive regulation of receptor-mediated endocytosis / peptide antigen assembly with MHC class II protein complex / multicellular organismal-level iron ion homeostasis / MHC class II protein complex / cellular response to nicotine / specific granule lumen / positive regulation of cellular senescence / positive regulation of T cell mediated cytotoxicity / positive regulation of type II interferon production / recycling endosome membrane / phagocytic vesicle membrane / peptide antigen binding / antigen processing and presentation of exogenous peptide antigen via MHC class II / negative regulation of epithelial cell proliferation / positive regulation of peptidyl-tyrosine phosphorylation / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / positive regulation of immune response / Interferon gamma signaling / Modulation by Mtb of host immune system / positive regulation of T cell activation / transmembrane signaling receptor activity / cell-cell junction 類似検索 - 分子機能 | |||||||||
生物種 | Homo sapiens (ヒト) | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.25 Å | |||||||||
データ登録者 | Saotome K / Franklin MC | |||||||||
資金援助 | 1件
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引用 | 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. | |||||||||
履歴 |
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-構造の表示
添付画像 |
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-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_28572.map.gz | 270.3 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-28572-v30.xml emd-28572.xml | 24.4 KB 24.4 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_28572.png | 74.2 KB | ||
Filedesc metadata | emd-28572.cif.gz | 7.2 KB | ||
その他 | emd_28572_half_map_1.map.gz emd_28572_half_map_2.map.gz | 261.4 MB 261.5 MB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-28572 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-28572 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_28572_validation.pdf.gz | 820.7 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_28572_full_validation.pdf.gz | 820.3 KB | 表示 | |
XML形式データ | emd_28572_validation.xml.gz | 17.3 KB | 表示 | |
CIF形式データ | emd_28572_validation.cif.gz | 20.5 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-28572 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-28572 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_28572.map.gz / 形式: CCP4 / 大きさ: 325 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 0.85 Å | ||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
-ハーフマップ: #1
ファイル | emd_28572_half_map_1.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: #2
ファイル | emd_28572_half_map_2.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-試料の構成要素
+全体 : PN45428 TCR-CD3 complex bound to HLA-A2 MAGEA4 (230-239) in the p...
+超分子 #1: PN45428 TCR-CD3 complex bound to HLA-A2 MAGEA4 (230-239) in the p...
+分子 #1: PN45428 TCR alpha chain
+分子 #2: PN45428 TCR beta chain
+分子 #3: T-cell surface glycoprotein CD3 zeta chain
+分子 #4: T-cell surface glycoprotein CD3 delta chain
+分子 #5: T-cell surface glycoprotein CD3 epsilon chain
+分子 #6: T-cell surface glycoprotein CD3 gamma chain
+分子 #7: MHC class I antigen
+分子 #8: Beta-2-microglobulin
+分子 #9: Melanoma-associated antigen 4
+分子 #12: 2-acetamido-2-deoxy-beta-D-glucopyranose
+分子 #13: CHOLESTEROL HEMISUCCINATE
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
緩衝液 | pH: 8 |
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凍結 | 凍結剤: ETHANE |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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特殊光学系 | エネルギーフィルター - 名称: GIF Bioquantum / エネルギーフィルター - スリット幅: 20 eV |
撮影 | フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 平均電子線量: 40.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2.4 µm 最小 デフォーカス(公称値): 1.4000000000000001 µm |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
-画像解析
初期モデル | モデルのタイプ: NONE |
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最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 3.25 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 使用した粒子像数: 107308 |
初期 角度割当 | タイプ: MAXIMUM LIKELIHOOD |
最終 角度割当 | タイプ: MAXIMUM LIKELIHOOD |