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基本情報
登録情報 | データベース: PDB / ID: 7phr | |||||||||||||||
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タイトル | Structure of a fully assembled T-cell receptor engaging a tumor-associated peptide-MHC I | |||||||||||||||
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![]() | IMMUNE SYSTEM / T-cell receptor / TCR / Major Histocompatibility Complex / MHC / Antigen / Adaptive Immunity / Cancer / Complex | |||||||||||||||
機能・相同性 | ![]() 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 / cis-Golgi network membrane / positive regulation of melanin biosynthetic process / CD4-positive, alpha-beta T cell proliferation / 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 / cis-Golgi network membrane / positive regulation of melanin biosynthetic process / CD4-positive, alpha-beta T cell proliferation / Fc-gamma receptor signaling pathway / gamma-delta T cell activation / negative thymic T cell selection / melanin biosynthetic process / melanosome membrane / multivesicular body, internal vesicle / melanosome organization / positive regulation of CD4-positive, alpha-beta T cell proliferation / multivesicular body membrane / 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 mediated cytotoxicity directed against tumor cell target / T cell receptor complex / positive regulation of memory T cell activation / TAP complex binding / smoothened signaling pathway / establishment or maintenance of cell polarity / positive regulation of CD8-positive, alpha-beta T cell activation / CD8-positive, alpha-beta T cell activation / Golgi medial cisterna / positive regulation of CD8-positive, alpha-beta T cell proliferation / CD8 receptor binding / positive regulation of interleukin-4 production / dendrite development / Translocation of ZAP-70 to Immunological synapse / Phosphorylation of CD3 and TCR zeta chains / antigen processing and presentation of exogenous peptide antigen via MHC class I / endoplasmic reticulum exit site / alpha-beta T cell activation / antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-dependent / Generation of second messenger molecules / immunological synapse / TAP binding / FCGR activation / protection from natural killer cell mediated cytotoxicity / PD-1 signaling / Role of phospholipids in phagocytosis / beta-2-microglobulin binding / T cell receptor binding / positive regulation of calcium-mediated signaling / negative regulation of smoothened signaling pathway / detection of bacterium / positive regulation of T cell proliferation / cell surface receptor protein tyrosine kinase signaling pathway / T cell costimulation / T cell activation / positive regulation of interleukin-2 production / bioluminescence / cerebellum development / FCGR3A-mediated IL10 synthesis / protein tyrosine kinase binding / 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 / DAP12 interactions / negative regulation of receptor binding / generation of precursor metabolites and energy / antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-independent / antigen processing and presentation of endogenous peptide antigen via MHC class Ib / calcium-mediated signaling / lumenal side of endoplasmic reticulum membrane / cellular response to iron ion / Endosomal/Vacuolar pathway / apoptotic signaling pathway / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / FCGR3A-mediated phagocytosis / cellular response to iron(III) ion / clathrin-coated endocytic vesicle membrane / antigen processing and presentation of exogenous protein antigen via MHC class Ib, TAP-dependent / negative regulation of forebrain neuron differentiation / regulation of erythrocyte differentiation / ER to Golgi transport vesicle membrane / peptide antigen assembly with MHC class I protein complex / 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 / Regulation of actin dynamics for phagocytic cup formation / MHC class I protein complex / multicellular organismal-level iron ion homeostasis / negative regulation of neurogenesis / peptide antigen assembly with MHC class II protein complex 類似検索 - 分子機能 | |||||||||||||||
生物種 | ![]() ![]() ![]() | |||||||||||||||
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: 3.08 Å | |||||||||||||||
![]() | Susac, L. / Thomas, C. / Tampe, R. | |||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structure of a fully assembled tumor-specific T cell receptor ligated by pMHC. 著者: Lukas Sušac / Mai T Vuong / Christoph Thomas / Sören von Bülow / Caitlin O'Brien-Ball / Ana Mafalda Santos / Ricardo A Fernandes / Gerhard Hummer / Robert Tampé / Simon J Davis / ![]() ![]() 要旨: The T cell receptor (TCR) expressed by T lymphocytes initiates protective immune responses to pathogens and tumors. To explore the structural basis of how TCR signaling is initiated when the ...The T cell receptor (TCR) expressed by T lymphocytes initiates protective immune responses to pathogens and tumors. To explore the structural basis of how TCR signaling is initiated when the receptor binds to peptide-loaded major histocompatibility complex (pMHC) molecules, we used cryogenic electron microscopy to determine the structure of a tumor-reactive TCRαβ/CD3δγεζ complex bound to a melanoma-specific human class I pMHC at 3.08 Å resolution. The antigen-bound complex comprises 11 subunits stabilized by multivalent interactions across three structural layers, with clustered membrane-proximal cystines stabilizing the CD3-εδ and CD3-εγ heterodimers. Extra density sandwiched between transmembrane helices reveals the involvement of sterol lipids in TCR assembly. The geometry of the pMHC/TCR complex suggests that efficient TCR scanning of pMHC requires accurate pre-positioning of T cell and antigen-presenting cell membranes. Comparisons of the ligand-bound and unliganded receptors, along with molecular dynamics simulations, indicate that TCRs can be triggered in the absence of spontaneous structural rearrangements. | |||||||||||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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PDBx/mmCIF形式 | ![]() | 268.5 KB | 表示 | ![]() |
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PDB形式 | ![]() | 214.4 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 748.4 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 748.8 KB | 表示 | |
XML形式データ | ![]() | 43.3 KB | 表示 | |
CIF形式データ | ![]() | 63.4 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 13427MC 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 ![]() |
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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 receptor ... , 2種, 2分子 AB
#1: タンパク質 | 分子量: 27979.268 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() |
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#2: タンパク質 | 分子量: 32750.736 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() |
-T-cell surface glycoprotein CD3 ... , 4種, 6分子 CDEeZz
#3: タンパク質 | 分子量: 13713.741 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: P09693 | ||
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#4: タンパク質 | 分子量: 39858.188 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() ![]() 遺伝子: CD3D, T3D, GFP 発現宿主: ![]() ![]() 参照: UniProt: P04234, UniProt: P42212 | ||
#5: タンパク質 | 分子量: 15316.222 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: P07766 #9: タンパク質・ペプチド | 分子量: 4138.015 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: P20963 |
-タンパク質 , 2種, 2分子 HL
#6: タンパク質 | 分子量: 35054.613 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
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#7: タンパク質 | 分子量: 11936.408 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
-タンパク質・ペプチド / 糖 , 2種, 7分子 P![](data/chem/img/NAG.gif)
![](data/chem/img/NAG.gif)
#10: 糖 | ChemComp-NAG / #8: タンパク質・ペプチド | | 分子量: 974.107 Da / 分子数: 1 / Mutation: A9V / 由来タイプ: 合成 / 由来: (合成) ![]() |
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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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-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: Fully assembled T-cell receptor engaging a tumor-associated peptide-MHC I タイプ: COMPLEX / Entity ID: #1-#9 / 由来: MULTIPLE SOURCES | ||||||||||||
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由来(天然) |
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由来(組換発現) |
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緩衝液 | pH: 7.5 | ||||||||||||
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: ![]() |
電子レンズ | モード: BRIGHT FIELD |
撮影 | 電子線照射量: 61 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.19.2_4158: / 分類: 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: 3.08 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 154408 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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