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データを開く
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基本情報
| 登録情報 | データベース: PDB / ID: 8tra | |||||||||||||||||||||||||||||||||||||||||||||||||||
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| タイトル | Cryo-EM structure of the rat P2X7 receptor in complex with the allosteric antagonist GSK1482160 | |||||||||||||||||||||||||||||||||||||||||||||||||||
要素 | P2X purinoceptor 7 | |||||||||||||||||||||||||||||||||||||||||||||||||||
キーワード | MEMBRANE PROTEIN / Ion Channel / Ligand-gate Ion Channel / P2X Receptor / Allosteric Antagonist / High-Affinity Agonist | |||||||||||||||||||||||||||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報regulation of presynaptic dense core granule exocytosis / Platelet homeostasis / The NLRP3 inflammasome / positive regulation of lymphocyte apoptotic process / positive regulation of bleb assembly / NAD transport / Elevation of cytosolic Ca2+ levels / positive regulation of cytoskeleton organization / phagolysosome assembly / phospholipid transfer to membrane ...regulation of presynaptic dense core granule exocytosis / Platelet homeostasis / The NLRP3 inflammasome / positive regulation of lymphocyte apoptotic process / positive regulation of bleb assembly / NAD transport / Elevation of cytosolic Ca2+ levels / positive regulation of cytoskeleton organization / phagolysosome assembly / phospholipid transfer to membrane / positive regulation of monoatomic ion transmembrane transport / lymphocyte apoptotic process / purinergic nucleotide receptor signaling pathway / gamma-aminobutyric acid secretion / extracellularly ATP-gated monoatomic cation channel activity / plasma membrane organization / negative regulation of cell volume / purinergic nucleotide receptor activity / positive regulation of gamma-aminobutyric acid secretion / positive regulation of interleukin-1 alpha production / ATP export / pore complex assembly / collagen metabolic process / positive regulation of prostaglandin secretion / plasma membrane phospholipid scrambling / bleb / T cell apoptotic process / bleb assembly / mitochondrial depolarization / vesicle budding from membrane / response to fluid shear stress / ceramide biosynthetic process / positive regulation of T cell apoptotic process / programmed cell death / prostaglandin secretion / positive regulation of ossification / cellular response to dsRNA / cell volume homeostasis / glutamate secretion / positive regulation of glutamate secretion / negative regulation of bone resorption / skeletal system morphogenesis / phospholipid translocation / positive regulation of macrophage cytokine production / response to zinc ion / response to ATP / protein homotrimerization / sodium channel activity / positive regulation of mitochondrial depolarization / membrane protein ectodomain proteolysis / positive regulation of NLRP3 inflammasome complex assembly / T cell homeostasis / positive regulation of calcium ion transport into cytosol / protein secretion / response to electrical stimulus / synaptic vesicle exocytosis / membrane depolarization / monoatomic cation transport / potassium channel activity / positive regulation of bone mineralization / response to mechanical stimulus / T cell proliferation / neuronal action potential / negative regulation of MAPK cascade / regulation of sodium ion transport / extrinsic apoptotic signaling pathway / release of sequestered calcium ion into cytosol / sensory perception of pain / homeostasis of number of cells within a tissue / reactive oxygen species metabolic process / positive regulation of glycolytic process / protein serine/threonine kinase activator activity / positive regulation of interleukin-1 beta production / positive regulation of protein secretion / mitochondrion organization / response to bacterium / establishment of localization in cell / neuromuscular junction / protein catabolic process / apoptotic signaling pathway / T cell mediated cytotoxicity / lipopolysaccharide binding / response to calcium ion / protein processing / positive regulation of T cell mediated cytotoxicity / calcium ion transmembrane transport / positive regulation of interleukin-6 production / cell morphogenesis / terminal bouton / cell-cell junction / calcium ion transport / nuclear envelope / MAPK cascade / signaling receptor activity / channel activity / scaffold protein binding / gene expression / response to lipopolysaccharide / cell surface receptor signaling pathway / positive regulation of MAPK cascade 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: 2.41 Å | |||||||||||||||||||||||||||||||||||||||||||||||||||
データ登録者 | Oken, A.C. / Ditter, I.A. / Lisi, N.E. / Krishnamurthy, I. / McCarthy, A.E. / Godsey, M.H. / Mansoor, S.E. | |||||||||||||||||||||||||||||||||||||||||||||||||||
| 資金援助 | 米国, 2件
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引用 | ジャーナル: Sci Adv / 年: 2024タイトル: P2X receptors exhibit at least three modes of allosteric antagonism. 著者: Adam C Oken / Ismayn A Ditter / Nicolas E Lisi / Ipsita Krishnamurthy / Michael H Godsey / Steven E Mansoor / ![]() 要旨: P2X receptors are trimeric ion channels activated by adenosine triphosphate (ATP) that contribute to pathophysiological processes ranging from asthma to neuropathic pain and neurodegeneration. A ...P2X receptors are trimeric ion channels activated by adenosine triphosphate (ATP) that contribute to pathophysiological processes ranging from asthma to neuropathic pain and neurodegeneration. A number of small-molecule antagonists have been identified for these important pharmaceutical targets. However, the molecular pharmacology of P2X receptors is poorly understood because of the chemically disparate nature of antagonists and their differential actions on the seven constituent subtypes. Here, we report high-resolution cryo-electron microscopy structures of the homomeric rat P2X receptor bound to five previously known small-molecule allosteric antagonists and a sixth antagonist that we identify. Our structural, biophysical, and electrophysiological data define the molecular determinants of allosteric antagonism in this pharmacologically relevant receptor, revealing three distinct classes of antagonists that we call shallow, deep, and starfish. Starfish binders, exemplified by the previously unidentified antagonist methyl blue, represent a unique class of inhibitors with distinct functional properties that could be exploited to develop potent P2X ligands with substantial clinical impact. | |||||||||||||||||||||||||||||||||||||||||||||||||||
| 履歴 |
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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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 | 8tra.cif.gz | 568.1 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb8tra.ent.gz | 476.3 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 8tra.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
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/tr/8tra ftp://data.pdbj.org/pub/pdb/validation_reports/tr/8tra | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 41575MC ![]() 8tr6C ![]() 8tr7C ![]() 8tr8C ![]() 8trbC ![]() 8trkC 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 F&H 検索 |
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リンク
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集合体
| 登録構造単位 | ![]()
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| 1 |
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要素
-タンパク質 / 糖 , 2種, 9分子 ABC

| #1: タンパク質 | 分子量: 68472.461 Da / 分子数: 3 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() #5: 糖 | ChemComp-NAG / |
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-非ポリマー , 6種, 224分子 








| #2: 化合物 | 分子量: 334.721 Da / 分子数: 3 / 由来タイプ: 合成 / 式: C14H14ClF3N2O2 / タイプ: SUBJECT OF INVESTIGATION #3: 化合物 | #4: 化合物 | ChemComp-ZN / #6: 化合物 | ChemComp-PLM / #7: 化合物 | ChemComp-NA / | #8: 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 |
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試料調製
| 構成要素 | 名称: Membrane protein / 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: Homo sapiens (ヒト) / 細胞: HEK293 GNTI- |
| 緩衝液 | pH: 7 |
| 試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
| 急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE |
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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: 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 / 倍率(公称値): 130000 X / 最大 デフォーカス(公称値): 1700 nm / 最小 デフォーカス(公称値): 1000 nm / Cs: 2.7 mm / C2レンズ絞り径: 50 µm |
| 試料ホルダ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
| 撮影 | 電子線照射量: 44 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 実像数: 8208 |
| 電子光学装置 | エネルギーフィルタースリット幅: 20 eV |
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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 | ||||||||||||||||||||||||
| 対称性 | 点対称性: C3 (3回回転対称) | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 2.41 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 394113 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 拘束条件 |
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コントローラー
万見について






米国, 2件
引用











PDBj





Homo sapiens (ヒト)
FIELD EMISSION GUN