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基本情報
登録情報 | データベース: PDB / ID: 8yez | ||||||
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タイトル | Human PIEZO1 | ||||||
![]() | Piezo-type mechanosensitive ion channel component 1 | ||||||
![]() | MEMBRANE PROTEIN / Human PIEZO1 | ||||||
機能・相同性 | ![]() mechanosensitive monoatomic cation channel activity / cuticular plate / positive regulation of cell-cell adhesion mediated by integrin / detection of mechanical stimulus / positive regulation of integrin activation / mechanosensitive monoatomic ion channel activity / stereocilium / Mechanical load activates signaling by PIEZO1 and integrins in osteocytes / positive regulation of myotube differentiation / lamellipodium membrane ...mechanosensitive monoatomic cation channel activity / cuticular plate / positive regulation of cell-cell adhesion mediated by integrin / detection of mechanical stimulus / positive regulation of integrin activation / mechanosensitive monoatomic ion channel activity / stereocilium / Mechanical load activates signaling by PIEZO1 and integrins in osteocytes / positive regulation of myotube differentiation / lamellipodium membrane / monoatomic cation transport / monoatomic cation channel activity / endoplasmic reticulum-Golgi intermediate compartment membrane / Turbulent (oscillatory, disturbed) flow shear stress activates signaling by PIEZO1 and integrins in endothelial cells / regulation of membrane potential / cellular response to mechanical stimulus / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / endoplasmic reticulum membrane / endoplasmic reticulum / plasma membrane 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 | ||||||
![]() | Zhang, M.F. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structure of human PIEZO1 and its slow-inactivating channelopathy mutants. 著者: Yuanyue Shan / Xinyi Guo / Mengmeng Zhang / Meiyu Chen / Ying Li / Mingfeng Zhang / Duanqing Pei / ![]() 要旨: PIEZO channels transmit mechanical force signals to cells, allowing them to make critical decisions during development and in pathophysiological conditions. Their fast/slow inactivation modes have ...PIEZO channels transmit mechanical force signals to cells, allowing them to make critical decisions during development and in pathophysiological conditions. Their fast/slow inactivation modes have been implicated in mechanopathologies but remain poorly understood. Here, we report several near-atomic resolution cryo-EM structures of fast-inactivating wild-type human PIEZO1 (hPIEZO1) and its slow-inactivating channelopathy mutants with or without its auxiliary subunit MDFIC. Our results suggest that hPIEZO1 has a more flattened and extended architecture than curved mouse PIEZO1 (mPIEZO1). The multi-lipidated MDFIC subunits insert laterally into the hPIEZO1 pore module like mPIEZO1, resulting in a more curved and extended state. Interestingly, the high-resolution structures suggest that the pore lipids, which directly seal the central hydrophobic pore, may be involved in the rapid inactivation of hPIEZO1. While the severe hereditary erythrocytosis mutant R2456H significantly slows down the inactivation of hPIEZO1, the hPIEZO1-R2456H-MDFIC complex shows a more curved and contracted structure with an inner helix twist due to the broken link between the pore lipid and R2456H. These results suggest that the pore lipids may be involved in the mechanopathological rapid inactivation mechanism of PIEZO channels. #1: ![]() タイトル: Structure of human PIEZO1 and its slow inactivating channelopathy mutants. 著者: Shan, Y. / Guo, X. / Zhang, M. / Chen, M. / Li, Y. / Zhang, M.F. / Pei, D. | ||||||
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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 | ![]() | 747.4 KB | 表示 | ![]() |
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PDB形式 | ![]() | 579.3 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 | ![]() | 1.8 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.9 MB | 表示 | |
XML形式データ | ![]() | 125.3 KB | 表示 | |
CIF形式データ | ![]() | 183.3 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 | ![]() 39205MC ![]() 8yfcC ![]() 8yfgC ![]() 8zu3C ![]() 8zu8C 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
#1: タンパク質 | 分子量: 287094.062 Da / 分子数: 3 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() #2: 化合物 | ChemComp-L9Q / ( 研究の焦点であるリガンドがあるか | Y | Has protein modification | Y | |
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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: human PIEZO1 / タイプ: COMPLEX / Entity ID: #1 / 由来: RECOMBINANT |
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由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() |
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 |
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: FEI MORGAGNI |
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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): 2000 nm / 最小 デフォーカス(公称値): 1200 nm |
撮影 | 電子線照射量: 40 e/Å2 フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) |
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解析
CTF補正 | タイプ: NONE |
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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: 161218 / 対称性のタイプ: POINT |