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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: 9ci8 | ||||||
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| タイトル | T cell receptor complex | ||||||
要素 |
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キーワード | IMMUNE SYSTEM / T cell receptor T cell immunity | ||||||
| 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 / CD4-positive, alpha-beta T cell proliferation / Fc-gamma receptor signaling pathway / gamma-delta T cell activation / positive regulation of cell-cell adhesion mediated by integrin / 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 T cell anergy / CD4-positive, alpha-beta T cell proliferation / Fc-gamma receptor signaling pathway / gamma-delta T cell activation / positive regulation of cell-cell adhesion mediated by integrin / negative thymic T cell selection / positive regulation of CD4-positive, alpha-beta T cell proliferation / positive thymic T cell selection / signal complex assembly / positive regulation of protein localization to cell surface / Nef and signal transduction / alpha-beta T cell receptor complex / T cell receptor complex / positive regulation of cell-matrix adhesion / smoothened signaling pathway / Translocation of ZAP-70 to Immunological synapse / Phosphorylation of CD3 and TCR zeta chains / small molecule binding / positive regulation of interleukin-4 production / dendrite development / establishment or maintenance of cell polarity / protein complex oligomerization / alpha-beta T cell activation / FCGR activation / Generation of second messenger molecules / immunological synapse / Co-inhibition by PD-1 / Role of phospholipids in phagocytosis / positive regulation of interleukin-2 production / T cell receptor binding / T cell costimulation / positive regulation of T cell proliferation / positive regulation of calcium-mediated signaling / FCGR3A-mediated IL10 synthesis / cell surface receptor protein tyrosine kinase signaling pathway / protein tyrosine kinase binding / cerebellum development / T cell activation / FCGR3A-mediated phagocytosis / negative regulation of smoothened signaling pathway / apoptotic signaling pathway / clathrin-coated endocytic vesicle membrane / calcium-mediated signaling / Regulation of actin dynamics for phagocytic cup formation / SH3 domain binding / positive regulation of type II interferon production / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / cell-cell junction / transmembrane signaling receptor activity / Downstream TCR signaling / Cargo recognition for clathrin-mediated endocytosis / T cell receptor signaling pathway / protein transport / Clathrin-mediated endocytosis / signaling receptor complex adaptor activity / cell body / protein-containing complex assembly / regulation of apoptotic process / dendritic spine / adaptive immune response / protein-macromolecule adaptor activity / cell surface receptor signaling pathway / G protein-coupled receptor signaling pathway / protein heterodimerization activity / external side of plasma membrane / negative regulation of gene expression / positive regulation of gene expression / protein kinase binding / endoplasmic reticulum / Golgi apparatus / protein homodimerization activity / identical protein binding / plasma membrane / cytoplasm / cytosol 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: 3.01 Å | ||||||
データ登録者 | Gully, B.S. / Rossjohn, J. | ||||||
| 資金援助 | オーストラリア, 1件
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引用 | ジャーナル: Nature / 年: 2024タイトル: Structure of a fully assembled γδ T cell antigen receptor. 著者: Benjamin S Gully / João Ferreira Fernandes / Sachith D Gunasinghe / Mai T Vuong / Yuan Lui / Michael T Rice / Liam Rashleigh / Chan-Sien Lay / Dene R Littler / Sumana Sharma / Ana Mafalda ...著者: Benjamin S Gully / João Ferreira Fernandes / Sachith D Gunasinghe / Mai T Vuong / Yuan Lui / Michael T Rice / Liam Rashleigh / Chan-Sien Lay / Dene R Littler / Sumana Sharma / Ana Mafalda Santos / Hariprasad Venugopal / Jamie Rossjohn / Simon J Davis / ![]() 要旨: T cells in jawed vertebrates comprise two lineages, αβ T cells and γδ T cells, defined by the antigen receptors they express-that is, αβ and γδ T cell receptors (TCRs), respectively. ...T cells in jawed vertebrates comprise two lineages, αβ T cells and γδ T cells, defined by the antigen receptors they express-that is, αβ and γδ T cell receptors (TCRs), respectively. The two lineages have different immunological roles, requiring that γδ TCRs recognize more structurally diverse ligands. Nevertheless, the receptors use shared CD3 subunits to initiate signalling. Whereas the structural organization of αβ TCRs is understood, the architecture of γδ TCRs is unknown. Here, we used cryogenic electron microscopy to determine the structure of a fully assembled, MR1-reactive, human Vγ8Vδ3 TCR-CD3δγεζ complex bound by anti-CD3ε antibody Fab fragments. The arrangement of CD3 subunits in γδ and αβ TCRs is conserved and, although the transmembrane α-helices of the TCR-γδ and -αβ subunits differ markedly in sequence, packing of the eight transmembrane-helix bundles is similar. However, in contrast to the apparently rigid αβ TCR, the γδ TCR exhibits considerable conformational heterogeneity owing to the ligand-binding TCR-γδ subunits being tethered to the CD3 subunits by their transmembrane regions only. Reducing this conformational heterogeneity by transfer of the Vγ8Vδ3 TCR variable domains to an αβ TCR enhanced receptor signalling, suggesting that γδ TCR organization reflects a compromise between efficient signalling and the ability to engage structurally diverse ligands. Our findings reveal the marked structural plasticity of the TCR on evolutionary timescales, and recast it as a highly versatile receptor capable of initiating signalling as either a rigid or flexible structure. | ||||||
| 履歴 |
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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 | 9ci8.cif.gz | 273.2 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9ci8.ent.gz | 216.4 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9ci8.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
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/ci/9ci8 ftp://data.pdbj.org/pub/pdb/validation_reports/ci/9ci8 | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 45614MC ![]() 9ciaC 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
-T-cell surface glycoprotein CD3 ... , 4種, 6分子 abdefg
| #3: タンパク質・ペプチド | 分子量: 3605.425 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: ![]() 参照: UniProt: P20963 #4: タンパク質 | | 分子量: 11693.529 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: ![]() 参照: UniProt: P04234 #5: タンパク質 | 分子量: 14111.933 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: ![]() 参照: UniProt: P07766 #6: タンパク質 | | 分子量: 12900.892 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: ![]() 参照: UniProt: P09693 |
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-T cell receptor ... , 2種, 2分子 mn
| #7: タンパク質・ペプチド | 分子量: 4104.061 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: TRDC発現宿主: ![]() 参照: UniProt: A0A075B6X2 |
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| #8: タンパク質・ペプチド | 分子量: 4403.386 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: TRGC1, TCRGC1発現宿主: ![]() 参照: UniProt: P0CF51 |
-抗体 , 2種, 4分子 ACBD
| #1: 抗体 | 分子量: 23614.113 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト)発現宿主: ![]() #2: 抗体 | 分子量: 23766.975 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト)発現宿主: ![]() |
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-詳細
| Has protein modification | Y |
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-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: T cell receptor complex / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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| 分子量 | 値: 0.2 MDa / 実験値: NO |
| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 由来(組換発現) | 生物種: ![]() |
| 緩衝液 | pH: 7.4 / 詳細: Hepes buffer saline |
| 試料 | 濃度: 5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
| 試料支持 | グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: UltrAuFoil R1.2/1.3 |
| 急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277.15 K |
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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): 1500 nm / 最小 デフォーカス(公称値): 500 nm / Cs: 2.7 mm / C2レンズ絞り径: 50 µm |
| 試料ホルダ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
| 撮影 | 電子線照射量: 60 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
| 電子光学装置 | エネルギーフィルター名称: GIF Quantum ER / エネルギーフィルタースリット幅: 10 eV |
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解析
| EMソフトウェア |
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||
| 粒子像の選択 | 選択した粒子像数: 2663326 | ||||||||||||||||||||||||||||||||||||
| 対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.01 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 193581 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | プロトコル: RIGID BODY FIT | ||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | PDB-ID: 7PHR Accession code: 7PHR / Source name: PDB / タイプ: experimental model | ||||||||||||||||||||||||||||||||||||
| 拘束条件 |
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万見について




Homo sapiens (ヒト)
オーストラリア, 1件
引用



PDBj



















FIELD EMISSION GUN
