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基本情報
登録情報 | データベース: PDB / ID: 8tcg | ||||||||||||||||||
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タイトル | Integrin alpha-v beta-6 in complex with minibinder B6_BP_dslf | ||||||||||||||||||
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![]() | DE NOVO PROTEIN / Complex / heterodimer / signaling / ECM-binding | ||||||||||||||||||
機能・相同性 | ![]() 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 / enamel mineralization / integrin alphav-beta1 complex / bronchiole development ...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 / enamel mineralization / integrin alphav-beta1 complex / bronchiole development / Cross-presentation of particulate exogenous antigens (phagosomes) / extracellular matrix protein binding / 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 / phospholipid homeostasis / 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 / surfactant homeostasis / transforming growth factor beta binding / positive regulation of small GTPase mediated signal transduction / filopodium membrane / extracellular matrix binding / negative regulation of low-density lipoprotein particle clearance / apolipoprotein A-I-mediated signaling pathway / apoptotic cell clearance / integrin complex / wound healing, spreading of epidermal cells / heterotypic cell-cell adhesion / Molecules associated with elastic fibres / Mechanical load activates signaling by PIEZO1 and integrins in osteocytes / negative chemotaxis / cell adhesion mediated by integrin / skin development / lung alveolus development / Syndecan interactions / positive regulation of osteoblast proliferation / microvillus membrane / cell-substrate adhesion / endodermal cell differentiation / PECAM1 interactions / TGF-beta receptor signaling activates SMADs / positive regulation of intracellular signal transduction / lamellipodium membrane / fibronectin binding / negative regulation of macrophage derived foam cell differentiation / negative regulation of lipid storage / ECM proteoglycans / Integrin cell surface interactions / vasculogenesis / voltage-gated calcium channel activity / specific granule membrane / coreceptor activity / phagocytic vesicle / ERK1 and ERK2 cascade / extrinsic apoptotic signaling pathway in absence of ligand / cellular response to ionizing radiation / substrate adhesion-dependent cell spreading / positive regulation of cell adhesion / transforming growth factor beta receptor signaling pathway / protein kinase C binding / molecular function activator activity / cell-matrix adhesion / Turbulent (oscillatory, disturbed) flow shear stress activates signaling by PIEZO1 and integrins in endothelial cells / Signal transduction by L1 / integrin-mediated signaling pathway / negative regulation of extrinsic apoptotic signaling pathway / wound healing / cell-cell adhesion / bone development / calcium ion transmembrane transport / VEGFA-VEGFR2 Pathway / response to virus / ruffle membrane / integrin binding / cell morphogenesis / cell migration / positive regulation of cytosolic calcium ion concentration / virus receptor activity / protease binding / angiogenesis / receptor complex / cell adhesion / immune response / positive regulation of cell migration / inflammatory response / external side of plasma membrane / focal adhesion / positive regulation of cell population proliferation / Neutrophil degranulation / symbiont entry into host cell / cell surface / extracellular exosome / metal ion binding 類似検索 - 分子機能 | ||||||||||||||||||
生物種 | ![]() synthetic construct (人工物) | ||||||||||||||||||
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: 3.4 Å | ||||||||||||||||||
![]() | Campbell, M.G. / Fernandez, A. / Roy, A. / Kraft, J. / Baker, D. | ||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: De novo design of highly selective miniprotein inhibitors of integrins αvβ6 and αvβ8. 著者: Anindya Roy / Lei Shi / Ashley Chang / Xianchi Dong / Andres Fernandez / John C Kraft / Jing Li / Viet Q Le / Rebecca Viazzo Winegar / Gerald Maxwell Cherf / Dean Slocum / P Daniel Poulson / ...著者: Anindya Roy / Lei Shi / Ashley Chang / Xianchi Dong / Andres Fernandez / John C Kraft / Jing Li / Viet Q Le / Rebecca Viazzo Winegar / Gerald Maxwell Cherf / Dean Slocum / P Daniel Poulson / Garrett E Casper / Mary L Vallecillo-Zúniga / Jonard Corpuz Valdoz / Marcos C Miranda / Hua Bai / Yakov Kipnis / Audrey Olshefsky / Tanu Priya / Lauren Carter / Rashmi Ravichandran / Cameron M Chow / Max R Johnson / Suna Cheng / McKaela Smith / Catherine Overed-Sayer / Donna K Finch / David Lowe / Asim K Bera / Gustavo Matute-Bello / Timothy P Birkland / Frank DiMaio / Ganesh Raghu / Jennifer R Cochran / Lance J Stewart / Melody G Campbell / Pam M Van Ry / Timothy Springer / David Baker / ![]() ![]() ![]() ![]() 要旨: The RGD (Arg-Gly-Asp)-binding integrins αvβ6 and αvβ8 are clinically validated cancer and fibrosis targets of considerable therapeutic importance. Compounds that can discriminate between ...The RGD (Arg-Gly-Asp)-binding integrins αvβ6 and αvβ8 are clinically validated cancer and fibrosis targets of considerable therapeutic importance. Compounds that can discriminate between homologous αvβ6 and αvβ8 and other RGD integrins, stabilize specific conformational states, and have high thermal stability could have considerable therapeutic utility. Existing small molecule and antibody inhibitors do not have all these properties, and hence new approaches are needed. Here we describe a generalized method for computationally designing RGD-containing miniproteins selective for a single RGD integrin heterodimer and conformational state. We design hyperstable, selective αvβ6 and αvβ8 inhibitors that bind with picomolar affinity. CryoEM structures of the designed inhibitor-integrin complexes are very close to the computational design models, and show that the inhibitors stabilize specific conformational states of the αvβ6 and the αvβ8 integrins. In a lung fibrosis mouse model, the αvβ6 inhibitor potently reduced fibrotic burden and improved overall lung mechanics, demonstrating the therapeutic potential of de novo designed integrin binding proteins with high selectivity. | ||||||||||||||||||
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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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ダウンロード
PDBx/mmCIF形式 | ![]() | 281.5 KB | 表示 | ![]() |
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PDB形式 | ![]() | 227.4 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 | ![]() | 1.4 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.4 MB | 表示 | |
XML形式データ | ![]() | 34.7 KB | 表示 | |
CIF形式データ | ![]() | 49.8 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-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 , 3種, 3分子 ABC
#1: タンパク質 | 分子量: 47898.004 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: P06756 |
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#2: タンパク質 | 分子量: 26948.713 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: P18564 |
#3: タンパク質 | 分子量: 8415.737 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) synthetic construct (人工物) / 発現宿主: ![]() ![]() |
-糖 , 2種, 3分子 
#4: 多糖 | alpha-D-mannopyranose-(1-6)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1- ...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: 糖 |
-非ポリマー , 2種, 7分子 


#5: 化合物 | ChemComp-CA / #7: 化合物 | |
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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: Ternary complex of integrin heterodimer (alpha-v beta-6) and the de novo minibinder protein B6_BP_dslf タイプ: COMPLEX 詳細: Integrin expressed in expiCHO cells, minibinder expressed in e. coli Entity ID: #1-#3 / 由来: RECOMBINANT |
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由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() ![]() 株: expiCHO |
緩衝液 | pH: 7.4 |
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: GOLD |
急速凍結 | 凍結剤: ETHANE |
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電子顕微鏡撮影
顕微鏡 | モデル: TFS GLACIOS |
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電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 1800 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 (6k x 4k) |
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解析
画像処理 | 詳細: Movies were collected in super resolution and gain corrected |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
3次元再構成 | 解像度: 3.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 124715 / 対称性のタイプ: POINT |