+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7.0E+20 | |||||||||
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タイトル | Cryo EM structure of a K+-bound Na+,K+-ATPase in the E2 state | |||||||||
要素 | (Sodium/potassium-transporting ATPase subunit ...) x 3 | |||||||||
キーワード | MEMBRANE PROTEIN / Na+ / K+-ATPase | |||||||||
機能・相同性 | 機能・相同性情報 negative regulation of glucocorticoid biosynthetic process / protein transport into plasma membrane raft / positive regulation of potassium ion transmembrane transporter activity / positive regulation of P-type sodium:potassium-exchanging transporter activity / Na+/K+-exchanging ATPase / positive regulation of striated muscle contraction / positive regulation of sodium ion export across plasma membrane / positive regulation of potassium ion import across plasma membrane / positive regulation of heart contraction / response to glycoside ...negative regulation of glucocorticoid biosynthetic process / protein transport into plasma membrane raft / positive regulation of potassium ion transmembrane transporter activity / positive regulation of P-type sodium:potassium-exchanging transporter activity / Na+/K+-exchanging ATPase / positive regulation of striated muscle contraction / positive regulation of sodium ion export across plasma membrane / positive regulation of potassium ion import across plasma membrane / positive regulation of heart contraction / response to glycoside / membrane repolarization during cardiac muscle cell action potential / photoreceptor inner segment membrane / establishment or maintenance of transmembrane electrochemical gradient / P-type sodium:potassium-exchanging transporter activity / steroid hormone binding / sodium ion binding / osmosensory signaling pathway / sodium:potassium-exchanging ATPase complex / membrane repolarization / negative regulation of heart contraction / regulation of the force of heart contraction / sodium ion export across plasma membrane / cell communication by electrical coupling involved in cardiac conduction / intracellular potassium ion homeostasis / regulation of calcium ion transmembrane transport / intracellular sodium ion homeostasis / cardiac muscle cell action potential involved in contraction / positive regulation of ATP-dependent activity / regulation of cardiac muscle contraction by calcium ion signaling / Basigin interactions / relaxation of cardiac muscle / cellular response to steroid hormone stimulus / organelle membrane / potassium ion import across plasma membrane / monoatomic cation transmembrane transport / phosphatase activity / potassium ion binding / Ion transport by P-type ATPases / ATPase activator activity / intercalated disc / lateral plasma membrane / sperm flagellum / sodium channel regulator activity / sodium ion transmembrane transport / ATP metabolic process / cardiac muscle contraction / regulation of sodium ion transport / Ion homeostasis / T-tubule / proton transmembrane transport / protein localization to plasma membrane / transmembrane transport / sarcolemma / regulation of blood pressure / intracellular calcium ion homeostasis / extracellular vesicle / melanosome / MHC class II protein complex binding / protein-folding chaperone binding / protein-macromolecule adaptor activity / ATPase binding / regulation of gene expression / basolateral plasma membrane / transmembrane transporter binding / Potential therapeutics for SARS / postsynaptic density / protein stabilization / cell adhesion / response to xenobiotic stimulus / protein heterodimerization activity / membrane raft / apical plasma membrane / axon / innate immune response / protein kinase binding / Golgi apparatus / endoplasmic reticulum / ATP hydrolysis activity / protein-containing complex / extracellular exosome / ATP binding / membrane / plasma membrane 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: 2.7 Å | |||||||||
データ登録者 | Guo, Y.Y. / Zhang, Y.Y. / Yan, R.H. / Huang, B.D. / Ye, F.F. / Wu, L.S. / Chi, X.M. / Zhou, Q. | |||||||||
資金援助 | 中国, 2件
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引用 | ジャーナル: Nat Commun / 年: 2022 タイトル: Cryo-EM structures of recombinant human sodium-potassium pump determined in three different states. 著者: Yingying Guo / Yuanyuan Zhang / Renhong Yan / Bangdong Huang / Fangfei Ye / Liushu Wu / Ximin Chi / Yi Shi / Qiang Zhou / 要旨: Sodium-Potassium Pump (Na/K-ATPase, NKA) is an ion pump that generates an electrochemical gradient of sodium and potassium ions across the plasma membrane by hydrolyzing ATP. During each Post-Albers ...Sodium-Potassium Pump (Na/K-ATPase, NKA) is an ion pump that generates an electrochemical gradient of sodium and potassium ions across the plasma membrane by hydrolyzing ATP. During each Post-Albers cycle, NKA exchanges three cytoplasmic sodium ions for two extracellular potassium ions through alternating changes between the E1 and E2 states. Hitherto, several steps remained unknown during the complete working cycle of NKA. Here, we report cryo-electron microscopy (cryo-EM) structures of recombinant human NKA (hNKA) in three distinct states at 2.7-3.2 Å resolution, representing the E1·3Na and E1·3Na·ATP states with cytosolic gates open and the basic E2·[2K] state, respectively. This work provides the insights into the cytoplasmic Na entrance pathway and the mechanism of cytoplasmic gate closure coupled with ATP hydrolysis, filling crucial gaps in the structural elucidation of the Post-Albers cycle of NKA. | |||||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7e20.cif.gz | 257.4 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7e20.ent.gz | 197.8 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7e20.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
文書・要旨 | 7e20_validation.pdf.gz | 1.4 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7e20_full_validation.pdf.gz | 1.4 MB | 表示 | |
XML形式データ | 7e20_validation.xml.gz | 46.9 KB | 表示 | |
CIF形式データ | 7e20_validation.cif.gz | 67.5 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/e2/7e20 ftp://data.pdbj.org/pub/pdb/validation_reports/e2/7e20 | HTTPS FTP |
-関連構造データ
関連構造データ | 30948MC 7e1zC 7e21C 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 (文献) |
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類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
-Sodium/potassium-transporting ATPase subunit ... , 3種, 3分子 ABC
#1: タンパク質 | 分子量: 113012.828 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: ATP1A1 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P05023, Na+/K+-exchanging ATPase |
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#2: タンパク質 | 分子量: 35108.258 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: ATP1B1, ATP1B / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P05026 |
#3: タンパク質 | 分子量: 7292.322 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: FXYD2, ATP1C, ATP1G1 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P54710 |
-糖 , 2種, 2分子
#4: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose |
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#9: 糖 | ChemComp-NAG / |
-非ポリマー , 5種, 12分子
#5: 化合物 | #6: 化合物 | ChemComp-MG / | #7: 化合物 | ChemComp-Y01 / #8: 化合物 | ChemComp-PC1 / | #10: 水 | ChemComp-HOH / | |
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-詳細
研究の焦点であるリガンドがあるか | Y |
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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 |
-試料調製
構成要素 | 名称: cryo EM structure of a K+-bound Na+,K+-ATPase in the E2 state タイプ: COMPLEX / Entity ID: #1-#3 / 由来: RECOMBINANT |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
由来(組換発現) | 生物種: Homo sapiens (ヒト) |
緩衝液 | pH: 8 |
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 |
-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 / 最大 デフォーカス(公称値): 2200 nm / 最小 デフォーカス(公称値): 1200 nm / アライメント法: COMA FREE |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 電子線照射量: 50 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
-解析
EMソフトウェア | 名称: RELION / バージョン: 3.0.6 / カテゴリ: 3次元再構成 |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
3次元再構成 | 解像度: 2.7 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 53681 / 対称性のタイプ: POINT |