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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: 9cq4 | ||||||
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| タイトル | G115 gamma delta TCR/CD3 complex bound by OKT3 Fab | ||||||
要素 |
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キーワード | MEMBRANE PROTEIN/IMMUNE SYSTEM / TCR / CD3 / gamma delta / Fab / OKT3 / immune receptor / T cell / MEMBRANE PROTEIN / MEMBRANE PROTEIN-IMMUNE SYSTEM complex | ||||||
| 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 / positive regulation of cell-cell adhesion mediated by integrin / Fc-gamma receptor signaling pathway / gamma-delta T cell activation / 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 / positive regulation of cell-cell adhesion mediated by integrin / Fc-gamma receptor signaling pathway / gamma-delta T cell activation / 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 / 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 / calcium-mediated signaling / clathrin-coated endocytic vesicle membrane / 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: 3.27 Å | ||||||
データ登録者 | Hoque, M. / Saotome, K. / Franklin, M.C. | ||||||
| 資金援助 | 米国, 1件
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引用 | ジャーナル: Nat Commun / 年: 2025タイトル: Structural characterization of two γδ TCR/CD3 complexes. 著者: Mohammed Hoque / John Benji Grigg / Trudy Ramlall / Jennifer Jones / Luke L McGoldrick / John C Lin / William C Olson / Eric Smith / Matthew C Franklin / Tong Zhang / Kei Saotome / ![]() 要旨: The T-cell receptor (TCR)/CD3 complex plays an essential role in the immune response and is a key player in cancer immunotherapies. There are two classes of TCR/CD3 complexes, defined by their TCR ...The T-cell receptor (TCR)/CD3 complex plays an essential role in the immune response and is a key player in cancer immunotherapies. There are two classes of TCR/CD3 complexes, defined by their TCR chain usage (αβ or γδ). Recently reported structures have revealed the organization of the αβ TCR/CD3 complex, but similar studies regarding the γδ TCR/CD3 complex have lagged behind. Here, we report cryoelectron microscopy (cryoEM) structural analysis of two γδ TCRs, G115 (Vγ9 Vδ2) and 9C2 (Vγ5 Vδ1), in complex with CD3 subunits. Our results show that the overall subunit organization of the γδ TCR/CD3 complexes is similar to αβ TCRs. However, both γδ TCRs display highly mobile extracellular domains (ECDs), unlike αβ TCRs, which have TCR ECDs that are rigidly coupled to its transmembrane (TM) domains. We corroborate this finding in cells by demonstrating that a γδ T-cell specific antibody can bind a site that would be inaccessible in the more rigid αβ TCR/CD3 complex. Furthermore, we observed that the Vγ5 Vδ1 complex forms a TCR γ5 chain-mediated dimeric species whereby two TCR/CD3 complexes are assembled. Collectively, these data shed light on γδ TCR/CD3 complex formation and may aid the design of γδ TCR-based therapies. | ||||||
| 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 | 9cq4.cif.gz | 299.7 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9cq4.ent.gz | 182.9 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9cq4.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/cq/9cq4 ftp://data.pdbj.org/pub/pdb/validation_reports/cq/9cq4 | HTTPS FTP |
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-関連構造データ
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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 , 2種, 2分子 AB
| #3: タンパク質 | 分子量: 31519.264 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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| #4: タンパク質 | 分子量: 33349.344 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) |
-T-cell surface glycoprotein CD3 ... , 4種, 6分子 KEFGYZ
| #5: 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 | ||||
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| #6: タンパク質 | 分子量: 23375.408 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#7: 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#8: 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 |
-抗体 , 2種, 4分子 CHDL
| #1: 抗体 | 分子量: 25735.826 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() #2: 抗体 | 分子量: 23194.719 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() |
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-糖 , 3種, 3分子 
| #9: 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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| #10: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose |
| #12: 糖 | ChemComp-NAG / |
-非ポリマー , 1種, 1分子 
| #11: 化合物 | ChemComp-CLR / |
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-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: G115 gamma delta TCR/CD3 complex bound by OKT3 Fab / タイプ: COMPLEX / Entity ID: #1-#8 / 由来: MULTIPLE SOURCES |
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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): 2200 nm / 最小 デフォーカス(公称値): 1000 nm |
| 撮影 | 電子線照射量: 50 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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解析
| EMソフトウェア | 名称: PHENIX / バージョン: 1.21.1_5286 / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.27 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 290758 / 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: 52.28 Å2 | ||||||||||||||||||||||||
| 拘束条件 |
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万見について





Homo sapiens (ヒト)
米国, 1件
引用






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FIELD EMISSION GUN