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基本情報
登録情報 | データベース: PDB / ID: 7vgj | |||||||||
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タイトル | Cryo-EM structure of the human P4-type flippase ATP8B1-CDC50A in the auto-inhibited E2Pi-PS state | |||||||||
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![]() | TRANSLOCASE/LIPID TRANSPORT / auto-inhibited / phosphorylated / lipid flippase / LIPID TRANSPORT / TRANSLOCASE-LIPID TRANSPORT complex | |||||||||
機能・相同性 | ![]() vestibulocochlear nerve formation / regulation of plasma membrane organization / regulation of microvillus assembly / positive regulation of phospholipid translocation / phosphatidylcholine flippase activity / aminophospholipid flippase activity / aminophospholipid transport / phosphatidylserine flippase activity / protein localization to endosome / ATPase-coupled intramembrane lipid transporter activity ...vestibulocochlear nerve formation / regulation of plasma membrane organization / regulation of microvillus assembly / positive regulation of phospholipid translocation / phosphatidylcholine flippase activity / aminophospholipid flippase activity / aminophospholipid transport / phosphatidylserine flippase activity / protein localization to endosome / ATPase-coupled intramembrane lipid transporter activity / phospholipid-translocating ATPase complex / positive regulation of protein exit from endoplasmic reticulum / phosphatidylserine floppase activity / inner ear receptor cell development / phosphatidylcholine floppase activity / xenobiotic transmembrane transport / stereocilium / bile acid metabolic process / cardiolipin binding / apical protein localization / P-type phospholipid transporter / phospholipid translocation / azurophil granule membrane / bile acid and bile salt transport / transport vesicle membrane / Golgi organization / Ion transport by P-type ATPases / specific granule membrane / regulation of chloride transport / sensory perception of sound / trans-Golgi network / positive regulation of neuron projection development / late endosome membrane / early endosome membrane / monoatomic ion transmembrane transport / nuclear body / apical plasma membrane / negative regulation of DNA-templated transcription / Neutrophil degranulation / structural molecule activity / magnesium ion binding / endoplasmic reticulum / Golgi apparatus / ATP hydrolysis activity / nucleoplasm / ATP binding / membrane / plasma membrane / cytosol 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: 3.98 Å | |||||||||
![]() | Chen, M.T. / Chen, Y. / Chen, Z.P. / Zhou, C.Z. / Hou, W.T. / Chen, Y. | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural insights into the activation of autoinhibited human lipid flippase ATP8B1 upon substrate binding. 著者: Meng-Ting Cheng / Yu Chen / Zhi-Peng Chen / Xin Liu / Zhiyong Zhang / Yuxing Chen / Wen-Tao Hou / Cong-Zhao Zhou / ![]() 要旨: SignificanceATP8B1 is a P4 ATPase that maintains membrane asymmetry by transporting phospholipids across the cell membrane. Disturbance of lipid asymmetry will lead to the imbalance of the cell ...SignificanceATP8B1 is a P4 ATPase that maintains membrane asymmetry by transporting phospholipids across the cell membrane. Disturbance of lipid asymmetry will lead to the imbalance of the cell membrane and eventually, cell death. Thus, defects in ATP8B1 are usually associated with severe human diseases, such as intrahepatic cholestasis. The present structures of ATP8B1 complexed with its auxiliary noncatalytic partners CDC50A and CDC50B reveal an autoinhibited state of ATP8B1 that could be released upon substrate binding. Moreover, release of this autoinhibition could be facilitated by the bile acids, which are key factors that alter the membrane asymmetry of hepatocytes. This enabled us to figure out a feedback loop of bile acids and lipids across the cell membrane. | |||||||||
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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 | ![]() | 274 KB | 表示 | ![]() |
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PDB形式 | ![]() | 211.6 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
関連構造データ | ![]() 31971MC ![]() 7vghC ![]() 7vgiC 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: 148458.562 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
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#2: タンパク質 | 分子量: 41845.746 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() |
#3: 化合物 | ChemComp-P5S / |
研究の焦点であるリガンドがあるか | Y |
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: ATP8B1-CDC50A complex / タイプ: COMPLEX / Entity ID: #1-#2 / 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: 7.5 |
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 / 湿度: 100 % |
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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: LAB6 / 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: 60 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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3次元再構成 | 解像度: 3.98 Å / 解像度の算出法: DIFFRACTION PATTERN/LAYERLINES / 粒子像の数: 160435 / 対称性のタイプ: POINT |