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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: 6ujb | ||||||||||||||||||||||||
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| タイトル | Integrin alpha-v beta-8 in complex with the Fabs C6D4 and 11D12v2 | ||||||||||||||||||||||||
要素 |
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キーワード | SIGNALING PROTEIN/IMMUNE SYSTEM / glycoprotein / adhesion / signaling / SIGNALING PROTEIN-IMMUNE SYSTEM complex | ||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報ganglioside metabolic process / Langerhans cell differentiation / integrin alphav-beta8 complex / integrin alphav-beta6 complex / transforming growth factor beta production / negative regulation of entry of bacterium into host cell / integrin alphav-beta5 complex / opsonin binding / integrin alphav-beta1 complex / Cross-presentation of particulate exogenous antigens (phagosomes) ...ganglioside metabolic process / Langerhans cell differentiation / integrin alphav-beta8 complex / integrin alphav-beta6 complex / transforming growth factor beta production / negative regulation of entry of bacterium into host cell / integrin alphav-beta5 complex / opsonin binding / integrin alphav-beta1 complex / Cross-presentation of particulate exogenous antigens (phagosomes) / extracellular matrix protein binding / placenta blood vessel development / Laminin interactions / integrin alphav-beta3 complex / negative regulation of lipoprotein metabolic process / entry into host cell by a symbiont-containing vacuole / alphav-beta3 integrin-PKCalpha complex / alphav-beta3 integrin-HMGB1 complex / negative regulation of lipid transport / hard palate development / regulation of phagocytosis / Elastic fibre formation / alphav-beta3 integrin-IGF-1-IGF1R complex / transforming growth factor beta binding / positive regulation of small GTPase mediated signal transduction / filopodium membrane / extracellular matrix binding / cartilage development / wound healing, spreading of epidermal cells / apolipoprotein A-I-mediated signaling pathway / negative regulation of low-density lipoprotein particle clearance / apoptotic cell clearance / integrin complex / heterotypic cell-cell adhesion / Molecules associated with elastic fibres / negative chemotaxis / cell adhesion mediated by integrin / Mechanical load activates signaling by PIEZO1 and integrins in osteocytes / Syndecan interactions / positive regulation of osteoblast proliferation / microvillus membrane / cell-substrate adhesion / endodermal cell differentiation / PECAM1 interactions / TGF-beta receptor signaling activates SMADs / fibronectin binding / lamellipodium membrane / positive regulation of intracellular signal transduction / negative regulation of macrophage derived foam cell differentiation / negative regulation of lipid storage / ECM proteoglycans / Integrin cell surface interactions / vasculogenesis / specific granule membrane / voltage-gated calcium channel activity / coreceptor activity / phagocytic vesicle / ERK1 and ERK2 cascade / extrinsic apoptotic signaling pathway in absence of ligand / substrate adhesion-dependent cell spreading / positive regulation of cell adhesion / transforming growth factor beta receptor signaling pathway / protein kinase C binding / Turbulent (oscillatory, disturbed) flow shear stress activates signaling by PIEZO1 and integrins in endothelial cells / cell-matrix adhesion / integrin-mediated signaling pathway / Signal transduction by L1 / negative regulation of extrinsic apoptotic signaling pathway / cell-cell adhesion / calcium ion transmembrane transport / VEGFA-VEGFR2 Pathway / integrin binding / response to virus / ruffle membrane / positive regulation of angiogenesis / cell migration / positive regulation of cytosolic calcium ion concentration / virus receptor activity / protease binding / angiogenesis / cell adhesion / immune response / positive regulation of cell migration / negative regulation of gene expression / external side of plasma membrane / focal adhesion / positive regulation of cell population proliferation / Neutrophil degranulation / positive regulation of gene expression / symbiont entry into host cell / cell surface / extracellular exosome / metal ion binding / membrane / plasma membrane / 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: 3.51 Å | ||||||||||||||||||||||||
データ登録者 | Campbell, M.G. / Cormier, A. / Cheng, Y. / Nishimura, S.L. | ||||||||||||||||||||||||
| 資金援助 | 米国, 7件
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引用 | ジャーナル: Cell / 年: 2020タイトル: Cryo-EM Reveals Integrin-Mediated TGF-β Activation without Release from Latent TGF-β. 著者: Melody G Campbell / Anthony Cormier / Saburo Ito / Robert I Seed / Andrew J Bondesson / Jianlong Lou / James D Marks / Jody L Baron / Yifan Cheng / Stephen L Nishimura / ![]() 要旨: Integrin αvβ8 binds with exquisite specificity to latent transforming growth factor-β (L-TGF-β). This binding is essential for activating L-TGF-β presented by a variety of cell types. ...Integrin αvβ8 binds with exquisite specificity to latent transforming growth factor-β (L-TGF-β). This binding is essential for activating L-TGF-β presented by a variety of cell types. Inhibiting αvβ8-mediated TGF-β activation blocks immunosuppressive regulatory T cell differentiation, which is a potential therapeutic strategy in cancer. Using cryo-electron microscopy, structure-guided mutagenesis, and cell-based assays, we reveal the binding interactions between the entire αvβ8 ectodomain and its intact natural ligand, L-TGF-β, as well as two different inhibitory antibody fragments to understand the structural underpinnings of αvβ8 binding specificity and TGF-β activation. Our studies reveal a mechanism of TGF-β activation where mature TGF-β signals within the confines of L-TGF-β and the release and diffusion of TGF-β are not required. The structural details of this mechanism provide a rational basis for therapeutic strategies to inhibit αvβ8-mediated L-TGF-β activation. | ||||||||||||||||||||||||
| 履歴 |
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構造の表示
| ムービー |
ムービービューア |
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| 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 | 6ujb.cif.gz | 264.9 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb6ujb.ent.gz | 194.1 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 6ujb.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/uj/6ujb ftp://data.pdbj.org/pub/pdb/validation_reports/uj/6ujb | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 20795MC ![]() 6ujaC ![]() 6ujcC 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 | |
| 電子顕微鏡画像生データ | EMPIAR-10345 (タイトル: CryoEM dataset containing multiple conformations of the asymmetric αVβ8 integrin bound to two Fabs on a holey carbon grid (minimal preferred orientations)Data size: 882.1 Data #1: Unaligned 60-frame movies of αVβ8 integrin bound to a Fab (C6D4) on a holey carbon grid [micrographs - multiframe] Data #2: Dose-weighted aligned micrographs of αVβ8 integrin bound to a Fab (C6D4) on a holey carbon grid [micrographs - single frame] Data #3: Dose-weighted aligned particle stacks of αVβ8 integrin bound to a Fab (C6D4) on a holey carbon grid [picked particles - single frame - processed]) |
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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
| #1: タンパク質 | 分子量: 112813.352 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: ITGAV, MSK8, VNRA, VTNR / 細胞株 (発現宿主): CHO lec 3.2.8.1発現宿主: ![]() 組織 (発現宿主): ovary / 参照: UniProt: P06756 |
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| #2: タンパク質 | 分子量: 81276.664 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: ITGB8 / 細胞株 (発現宿主): CHO lec 3.2.8.1発現宿主: ![]() 組織 (発現宿主): ovary / 参照: UniProt: P26012 |
-抗体 , 2種, 2分子 EF
| #3: 抗体 | 分子量: 22785.475 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() Homo sapiens (ヒト) |
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| #4: 抗体 | 分子量: 24140.760 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() Homo sapiens (ヒト) |
-糖 , 3種, 8分子 
| #5: 多糖 | alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D- ...alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]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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| #6: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose #8: 糖 | |
-非ポリマー , 2種, 6分子 


| #7: 化合物 | ChemComp-CA / #9: 化合物 | ChemComp-MG / | |
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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 |
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| 分子量 | 値: 0.2 MDa / 実験値: NO | ||||||||||||||||||||||||||||||
| 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 | ||||||||||||||||||||||||||||||
| 試料支持 | 詳細: unspecified | ||||||||||||||||||||||||||||||
| 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 |
| 撮影 | 電子線照射量: 70 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
| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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| 対称性 | 点対称性: C1 (非対称) |
| 3次元再構成 | 解像度: 3.51 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 84266 / 対称性のタイプ: POINT |
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コントローラー
万見について




Homo sapiens (ヒト)

米国, 7件
引用
UCSF Chimera



















PDBj













