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基本情報
登録情報 | データベース: PDB / ID: 9c0g | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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タイトル | Phosphorylated human NKCC1 in complex with torsemide | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Solute carrier family 12 member 2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | TRANSPORT PROTEIN / Phosphorylation / sodium potassium chloride cotransporter / outward-open / torsemide | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
機能・相同性 | ![]() positive regulation of cell volume / positive regulation of aspartate secretion / transepithelial ammonium transport / regulation of matrix metallopeptidase secretion / cell body membrane / metal ion transmembrane transporter activity / inorganic anion import across plasma membrane / inorganic cation import across plasma membrane / chloride:monoatomic cation symporter activity / sodium:potassium:chloride symporter activity ...positive regulation of cell volume / positive regulation of aspartate secretion / transepithelial ammonium transport / regulation of matrix metallopeptidase secretion / cell body membrane / metal ion transmembrane transporter activity / inorganic anion import across plasma membrane / inorganic cation import across plasma membrane / chloride:monoatomic cation symporter activity / sodium:potassium:chloride symporter activity / transepithelial chloride transport / Cation-coupled Chloride cotransporters / potassium ion transmembrane transporter activity / intracellular chloride ion homeostasis / negative regulation of vascular wound healing / ammonium transmembrane transport / sodium ion homeostasis / ammonium channel activity / chloride ion homeostasis / cell projection membrane / cellular response to potassium ion / T cell chemotaxis / cellular response to chemokine / potassium ion homeostasis / intracellular sodium ion homeostasis / hyperosmotic response / sodium ion import across plasma membrane / intracellular potassium ion homeostasis / cell volume homeostasis / regulation of spontaneous synaptic transmission / gamma-aminobutyric acid signaling pathway / maintenance of blood-brain barrier / potassium ion import across plasma membrane / lateral plasma membrane / transport across blood-brain barrier / monoatomic ion transport / sodium ion transmembrane transport / cytoplasmic vesicle membrane / chloride transmembrane transport / basal plasma membrane / cell periphery / cell projection / Hsp90 protein binding / extracellular vesicle / protein-folding chaperone binding / cell body / basolateral plasma membrane / neuron projection / apical plasma membrane / neuronal cell body / protein kinase binding / extracellular exosome / membrane / 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: 2.6 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
![]() | Zhao, Y.X. / Cao, E.H. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural basis for human NKCC1 inhibition by loop diuretic drugs. 著者: Yongxiang Zhao / Pietro Vidossich / Biff Forbush / Junfeng Ma / Jesse Rinehart / Marco De Vivo / Erhu Cao / ![]() ![]() ![]() 要旨: Na-K-Cl cotransporters functions as an anion importers, regulating trans-epithelial chloride secretion, cell volume, and renal salt reabsorption. Loop diuretics, including furosemide, bumetanide, and ...Na-K-Cl cotransporters functions as an anion importers, regulating trans-epithelial chloride secretion, cell volume, and renal salt reabsorption. Loop diuretics, including furosemide, bumetanide, and torsemide, antagonize both NKCC1 and NKCC2, and are first-line medicines for the treatment of edema and hypertension. NKCC1 activation by the molecular crowding sensing WNK kinases is critical if cells are to combat shrinkage during hypertonic stress; however, how phosphorylation accelerates NKCC1 ion transport remains unclear. Here, we present co-structures of phospho-activated NKCC1 bound with furosemide, bumetanide, or torsemide showing that furosemide and bumetanide utilize a carboxyl group to coordinate and co-occlude a K, whereas torsemide encroaches and expels the K from the site. We also found that an amino-terminal segment of NKCC1, once phosphorylated, interacts with the carboxyl-terminal domain, and together, they engage with intracellular ion exit and appear to be poised to facilitate rapid ion translocation. Together, these findings enhance our understanding of NKCC-mediated epithelial ion transport and the molecular mechanisms of its inhibition by loop diuretics. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
履歴 |
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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 | ![]() | 350.4 KB | 表示 | ![]() |
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PDB形式 | ![]() | 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 | ![]() 45083MC ![]() 9c0eC ![]() 9c0hC 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: 131663.406 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() #2: 化合物 | 分子量: 348.420 Da / 分子数: 2 / 由来タイプ: 合成 / 式: C16H20N4O3S / タイプ: SUBJECT OF INVESTIGATION #3: 化合物 | #4: 化合物 | #5: 水 | ChemComp-HOH / | 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: Phosphorylated human NKCC1 in complex with torsemide 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): 3500 nm / 最小 デフォーカス(公称値): 700 nm |
撮影 | 電子線照射量: 42 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
EMソフトウェア | 名称: PHENIX / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3次元再構成 | 解像度: 2.6 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 2360417 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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