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データを開く
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基本情報
| 登録情報 | データベース: PDB / ID: 8es9 | ||||||
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| タイトル | CryoEM structure of PN45428 TCR-CD3 in complex with HLA-A2 MAGEA4 | ||||||
要素 |
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キーワード | IMMUNE SYSTEM / TCR / receptor / membrane protein / CD3 / MHC / HLA | ||||||
| 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 / Fc-gamma receptor signaling pathway / gamma-delta T cell activation / 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 / Fc-gamma receptor signaling pathway / gamma-delta T cell activation / 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 / Translocation of ZAP-70 to Immunological synapse / Phosphorylation of CD3 and TCR zeta chains / positive regulation of interleukin-4 production / establishment or maintenance of cell polarity / 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 / cell surface receptor protein tyrosine kinase signaling pathway / protein tyrosine kinase binding / T cell activation / negative regulation of receptor binding / cerebellum development / early endosome lumen / Nef mediated downregulation of MHC class I complex cell surface expression / DAP12 interactions / transferrin transport / cellular response to iron ion / lumenal side of endoplasmic reticulum membrane / Endosomal/Vacuolar pathway / negative regulation of smoothened signaling pathway / FCGR3A-mediated phagocytosis / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / peptide antigen assembly with MHC class II protein complex / apoptotic signaling pathway / cellular response to iron(III) ion / MHC class II protein complex / negative regulation of forebrain neuron differentiation / antigen processing and presentation of exogenous protein antigen via MHC class Ib, TAP-dependent / clathrin-coated endocytic vesicle membrane / calcium-mediated signaling / ER to Golgi transport vesicle membrane / peptide antigen assembly with MHC class I protein complex / regulation of iron ion transport / regulation of erythrocyte differentiation / HFE-transferrin receptor complex / response to molecule of bacterial origin / MHC class I peptide loading complex / T cell mediated cytotoxicity / positive regulation of T cell cytokine production / antigen processing and presentation of endogenous peptide antigen via MHC class I / 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 / positive regulation of receptor-mediated endocytosis / Regulation of actin dynamics for phagocytic cup formation / negative regulation of neurogenesis / SH3 domain binding / cellular response to nicotine / positive regulation of T cell mediated cytotoxicity / multicellular organismal-level iron ion homeostasis / histone deacetylase binding / specific granule lumen / positive regulation of type II interferon production / phagocytic vesicle membrane / recycling endosome membrane / Interferon gamma signaling / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / negative regulation of epithelial cell proliferation / MHC class II protein complex binding / Modulation by Mtb of host immune system / cell-cell junction / late endosome membrane / sensory perception of smell / positive regulation of cellular senescence / transmembrane signaling receptor activity / tertiary granule lumen 類似検索 - 分子機能 | ||||||
| 生物種 | Homo sapiens (ヒト) | ||||||
| 手法 | 電子顕微鏡法 / 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, M.C. | ||||||
| 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. | ||||||
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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ダウンロードとリンク
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ダウンロード
| PDBx/mmCIF形式 | 8es9.cif.gz | 322.4 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb8es9.ent.gz | 237.5 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 8es9.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
| その他 | その他のダウンロード |
-検証レポート
| 文書・要旨 | 8es9_validation.pdf.gz | 1.5 MB | 表示 | wwPDB検証レポート |
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| 文書・詳細版 | 8es9_full_validation.pdf.gz | 1.5 MB | 表示 | |
| XML形式データ | 8es9_validation.xml.gz | 55.5 KB | 表示 | |
| CIF形式データ | 8es9_validation.cif.gz | 80.9 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/es/8es9 ftp://data.pdbj.org/pub/pdb/validation_reports/es/8es9 | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 28572MC ![]() 8es7C ![]() 8es8C ![]() 8esaC ![]() 8esbC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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| 類似構造データ | 類似検索 - 機能・相同性 F&H 検索 |
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リンク
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集合体
| 登録構造単位 | ![]()
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要素
-タンパク質 , 4種, 4分子 ABNM
| #1: タンパク質 | 分子量: 30415.229 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 発現宿主: Homo sapiens (ヒト) |
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| #2: タンパク質 | 分子量: 35487.352 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 発現宿主: Homo sapiens (ヒト) |
| #7: タンパク質 | 分子量: 32082.512 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: HLA-A*02:01 / 発現宿主: ![]() |
| #8: タンパク質 | 分子量: 11879.356 Da / 分子数: 1 / Fragment: UNP residues 21-119 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: B2M, CDABP0092, HDCMA22P / 発現宿主: ![]() |
-T-cell surface glycoprotein CD3 ... , 4種, 6分子 ZYDFEG
| #3: タンパク質 | 分子量: 19654.486 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CD247, CD3Z, T3Z, TCRZ / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P20963#4: タンパク質 | | 分子量: 19150.719 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CD3D, T3D / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P04234#5: タンパク質 | 分子量: 23432.459 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CD3E, T3E / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P07766#6: タンパク質 | | 分子量: 20694.639 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CD3G, T3G / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P09693 |
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-タンパク質・ペプチド / 非ポリマー , 2種, 2分子 P

| #13: 化合物 | ChemComp-Y01 / |
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| #9: タンパク質・ペプチド | 分子量: 1134.200 Da / 分子数: 1 / Fragment: peptide (UNP residues 230-239) / 由来タイプ: 合成 / 由来: (合成) Homo sapiens (ヒト) / 参照: UniProt: P43358 |
-糖 , 3種, 9分子 
| #10: 多糖 | beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | ||
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| #11: 多糖 | | #12: 糖 | ChemComp-NAG / |
-詳細
| 研究の焦点であるリガンドがあるか | N |
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| Has protein modification | Y |
-実験情報
-実験
| 実験 | 手法: 電子顕微鏡法 |
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| EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
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試料調製
| 構成要素 | 名称: PN45428 TCR-CD3 complex bound to HLA-A2 MAGEA4 (230-239) in the presence of 2M2 Fab タイプ: COMPLEX / Entity ID: #1-#9 / 由来: RECOMBINANT |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 由来(組換発現) | 生物種: Homo sapiens (ヒト) |
| 緩衝液 | pH: 8 |
| 試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
| 急速凍結 | 凍結剤: ETHANE |
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電子顕微鏡撮影
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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| 顕微鏡 | モデル: FEI TITAN KRIOS |
| 電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
| 電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2400 nm / 最小 デフォーカス(公称値): 1400 nm |
| 撮影 | 電子線照射量: 40 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
| 電子光学装置 | 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 |
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解析
| ソフトウェア |
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.25 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 107308 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 精密化 | 交差検証法: NONE 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
| 原子変位パラメータ | Biso mean: 85.59 Å2 | ||||||||||||||||||||||||
| 拘束条件 |
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万見について




Homo sapiens (ヒト)
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FIELD EMISSION GUN