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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: 6uja | ||||||||||||||||||||||||
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タイトル | Integrin alpha-v beta-8 in complex with pro-TGF-beta1 | ||||||||||||||||||||||||
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![]() | SIGNALING PROTEIN / glycoprotein / adhesion / signaling | ||||||||||||||||||||||||
機能・相同性 | ![]() Platelet degranulation / Cell surface interactions at the vascular wall / Molecules associated with elastic fibres / TGF-beta receptor signaling activates SMADs / Syndecan interactions / RUNX3 regulates CDKN1A transcription / RUNX3 regulates p14-ARF / Downregulation of TGF-beta receptor signaling / TGF-beta receptor signaling in EMT (epithelial to mesenchymal transition) / Regulation of RUNX3 expression and activity ...Platelet degranulation / Cell surface interactions at the vascular wall / Molecules associated with elastic fibres / TGF-beta receptor signaling activates SMADs / Syndecan interactions / RUNX3 regulates CDKN1A transcription / RUNX3 regulates p14-ARF / Downregulation of TGF-beta receptor signaling / TGF-beta receptor signaling in EMT (epithelial to mesenchymal transition) / Regulation of RUNX3 expression and activity / ganglioside metabolic process / regulation of binding / regulation of DNA binding / positive regulation of microglia differentiation / negative regulation of skeletal muscle tissue development / regulation of striated muscle tissue development / regulation of protein import into nucleus / type III transforming growth factor beta receptor binding / Langerhans cell differentiation / negative regulation of hyaluronan biosynthetic process / extracellular matrix assembly / integrin alphav-beta6 complex / integrin alphav-beta8 complex / hard palate development / transforming growth factor beta production / negative regulation of macrophage cytokine production / negative regulation of entry of bacterium into host cell / integrin alphav-beta5 complex / odontoblast differentiation / : / opsonin binding / positive regulation of isotype switching to IgA isotypes / integrin alphav-beta1 complex / membrane protein intracellular domain proteolysis / Cross-presentation of particulate exogenous antigens (phagosomes) / extracellular matrix protein binding / hyaluronan catabolic process / regulation of transforming growth factor beta receptor signaling pathway / ATP biosynthetic process / Laminin interactions / receptor catabolic process / placenta blood vessel development / integrin alphav-beta3 complex / negative regulation of lipoprotein metabolic process / type II transforming growth factor beta receptor binding / alphav-beta3 integrin-PKCalpha complex / entry into host cell by a symbiont-containing vacuole / type I transforming growth factor beta receptor binding / alphav-beta3 integrin-HMGB1 complex / positive regulation of chemotaxis / negative regulation of lipid transport / negative regulation of myoblast differentiation / negative regulation of low-density lipoprotein receptor activity / cell-cell junction organization / regulation of phagocytosis / Elastic fibre formation / alphav-beta3 integrin-IGF-1-IGF1R complex / transforming growth factor beta binding / response to cholesterol / filopodium membrane / positive regulation of small GTPase mediated signal transduction / extracellular matrix binding / positive regulation of fibroblast migration / phosphate-containing compound metabolic process / apolipoprotein A-I-mediated signaling pathway / cartilage development / apoptotic cell clearance / wound healing, spreading of epidermal cells / heterotypic cell-cell adhesion / integrin complex / Molecules associated with elastic fibres / positive regulation of intracellular signal transduction / positive regulation of epidermal growth factor receptor signaling pathway / microvillus membrane / negative chemotaxis / cell adhesion mediated by integrin / Syndecan interactions / negative regulation of cell-cell adhesion / negative regulation of fat cell differentiation / cell-substrate adhesion / endodermal cell differentiation / positive regulation of interleukin-17 production / positive regulation of osteoblast proliferation / TGF-beta receptor signaling activates SMADs / PECAM1 interactions / positive regulation of SMAD protein signal transduction / lamellipodium membrane / negative regulation of macrophage derived foam cell differentiation / negative regulation of blood vessel endothelial cell migration / negative regulation of lipid storage / fibronectin binding / positive regulation of cell division / negative regulation of cell cycle / positive regulation of cell adhesion / ECM proteoglycans / positive regulation of collagen biosynthetic process / voltage-gated calcium channel activity / positive regulation of blood vessel endothelial cell migration / epithelial to mesenchymal transition / vasculogenesis 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: 3.3 Å | ||||||||||||||||||||||||
![]() | Campbell, M.G. / Cormier, A. / Cheng, Y. / Nishimura, S.L. | ||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() 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 |
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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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ダウンロード
PDBx/mmCIF形式 | ![]() | 241.6 KB | 表示 | ![]() |
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PDB形式 | ![]() | 176 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 | ![]() | 993.3 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 996.2 KB | 表示 | |
XML形式データ | ![]() | 33.9 KB | 表示 | |
CIF形式データ | ![]() | 52.7 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 | ![]() 20794MC ![]() 6ujbC ![]() 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 | ![]() Data size: 1.2 TB Data #1: Unaligned 80-frame movies of αVβ8 integrin bound to latent TGF-β on a holey carbon grid [micrographs - multiframe] Data #2: Dose-weighted aligned micrographs of αVβ8 integrin bound to latent TGF-β on a holey carbon grid [micrographs - single frame] Data #3: Dose-weighted aligned particle stacks of αVβ8 integrin bound to latent TGF-β on a holey carbon grid [picked particles - single frame - processed]) ![]() Data size: 2.2 TB Data #1: Unaligned 80-frame movies of αVβ8 integrin bound to latent TGF-β on a graphene oxide grid [micrographs - multiframe] Data #2: Dose-weighted aligned micrographs of αVβ8 integrin bound to latent TGF-β on a graphene oxide grid [micrographs - single frame] Data #3: Dose-weighted aligned particle stacks of αVβ8 integrin bound to latent TGF-β on a graphene oxide 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 , 3種, 3分子 ABD
#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) ![]() 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) ![]() 発現宿主: ![]() ![]() 組織 (発現宿主): ovary / 参照: UniProt: P26012 |
#3: タンパク質 | 分子量: 41434.449 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
-糖 , 3種, 8分子 ![](data/chem/img/NAG.gif)
#4: 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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#5: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose #7: 糖 | |
-非ポリマー , 2種, 6分子 ![](data/chem/img/CA.gif)
![](data/chem/img/MG.gif)
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#6: 化合物 | ChemComp-CA / #8: 化合物 | ChemComp-MG / | |
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-詳細
構成要素の詳細 | LTGFb is a homodimer in the sample, but only a single chain (chain D) is modeled. |
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研究の焦点であるリガンドがあるか | N |
-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: 0.26 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 | グリッドの材料: GRAPHENE OXIDE | ||||||||||||||||||||||||||||
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: 70 e/Å2 / 検出モード: SUPER-RESOLUTION 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: 3.3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 43600 / 対称性のタイプ: POINT |