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データを開く
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基本情報
| 登録情報 | ![]() | |||||||||
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| タイトル | Cryo-EM structure of the rat P2X7 receptor in the apo closed state purified in the absence of sodium | |||||||||
マップデータ | Locally sharpened map for APO rP2X7 purified in KCl | |||||||||
試料 |
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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Platelet homeostasis / The NLRP3 inflammasome / positive regulation of lymphocyte apoptotic process / regulation of presynaptic dense core granule exocytosis / positive regulation of bleb assembly / NAD transport / Elevation of cytosolic Ca2+ levels / phagolysosome assembly / phospholipid transfer to membrane / positive regulation of cytoskeleton organization ...Platelet homeostasis / The NLRP3 inflammasome / positive regulation of lymphocyte apoptotic process / regulation of presynaptic dense core granule exocytosis / positive regulation of bleb assembly / NAD transport / Elevation of cytosolic Ca2+ levels / phagolysosome assembly / phospholipid transfer to membrane / positive regulation of cytoskeleton organization / positive regulation of monoatomic ion transmembrane transport / purinergic nucleotide receptor signaling pathway / plasma membrane organization / extracellularly ATP-gated monoatomic cation channel activity / positive regulation of gamma-aminobutyric acid secretion / positive regulation of interleukin-1 alpha production / purinergic nucleotide receptor activity / ATP export / collagen metabolic process / pore complex assembly / positive regulation of prostaglandin secretion / negative regulation of cell volume / plasma membrane phospholipid scrambling / bleb assembly / vesicle budding from membrane / positive regulation of T cell apoptotic process / bleb / response to fluid shear stress / programmed cell death / positive regulation of ossification / cellular response to dsRNA / cell volume homeostasis / negative regulation of bone resorption / ceramide biosynthetic process / positive regulation of glutamate secretion / skeletal system morphogenesis / positive regulation of macrophage cytokine production / phospholipid translocation / response to zinc ion / sodium channel activity / protein homotrimerization / response to ATP / positive regulation of NLRP3 inflammasome complex assembly / positive regulation of mitochondrial depolarization / T cell homeostasis / membrane protein ectodomain proteolysis / response to electrical stimulus / positive regulation of calcium ion transport into cytosol / synaptic vesicle exocytosis / membrane depolarization / T cell proliferation / monoatomic cation transport / positive regulation of bone mineralization / potassium channel activity / response to mechanical stimulus / neuronal action potential / regulation of sodium ion transport / extrinsic apoptotic signaling pathway / negative regulation of MAPK cascade / release of sequestered calcium ion into cytosol / reactive oxygen species metabolic process / sensory perception of pain / homeostasis of number of cells within a tissue / establishment of localization in cell / positive regulation of glycolytic process / positive regulation of protein secretion / positive regulation of interleukin-1 beta production / protein serine/threonine kinase activator activity / protein catabolic process / response to bacterium / apoptotic signaling pathway / neuromuscular junction / mitochondrion organization / lipopolysaccharide binding / protein processing / response to calcium ion / positive regulation of interleukin-6 production / positive regulation of T cell mediated cytotoxicity / calcium ion transmembrane transport / cell morphogenesis / terminal bouton / cell-cell junction / calcium ion transport / nuclear envelope / channel activity / signaling receptor activity / scaffold protein binding / response to lipopolysaccharide / gene expression / positive regulation of MAPK cascade / cell surface receptor signaling pathway / postsynapse / defense response to Gram-positive bacterium / positive regulation of apoptotic process / response to xenobiotic stimulus / inflammatory response / copper ion binding / signaling receptor binding / external side of plasma membrane / neuronal cell body 類似検索 - 分子機能 | |||||||||
| 生物種 | ![]() | |||||||||
| 手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.49 Å | |||||||||
データ登録者 | Oken AC / Lisi NE / Krishnamurthy I / McCarthy AE / Godsey MH / Glasfeld A / Mansoor SE | |||||||||
| 資金援助 | 米国, 2件
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引用 | ジャーナル: Nat Commun / 年: 2024タイトル: High-affinity agonism at the P2X receptor is mediated by three residues outside the orthosteric pocket. 著者: Adam C Oken / Nicolas E Lisi / Ipsita Krishnamurthy / Alanna E McCarthy / Michael H Godsey / Arthur Glasfeld / Steven E Mansoor / ![]() 要旨: P2X receptors are trimeric ATP-gated ion channels that activate diverse signaling cascades. Due to its role in apoptotic pathways, selective activation of P2X is a potential experimental tool and ...P2X receptors are trimeric ATP-gated ion channels that activate diverse signaling cascades. Due to its role in apoptotic pathways, selective activation of P2X is a potential experimental tool and therapeutic approach in cancer biology. However, mechanisms of high-affinity P2X activation have not been defined. We report high-resolution cryo-EM structures of wild-type rat P2X bound to the high-affinity agonist BzATP as well as significantly improved apo receptor structures in the presence and absence of sodium. Apo structures define molecular details of pore architecture and reveal how a partially hydrated Na ion interacts with the conductance pathway in the closed state. Structural, electrophysiological, and direct binding data of BzATP reveal that three residues just outside the orthosteric ATP-binding site are responsible for its high-affinity agonism. This work provides insights into high-affinity agonism for any P2X receptor and lays the groundwork for development of subtype-specific agonists applicable to cancer therapeutics. | |||||||||
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構造の表示
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ダウンロードとリンク
-EMDBアーカイブ
| マップデータ | emd_42976.map.gz | 204.9 MB | EMDBマップデータ形式 | |
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| ヘッダ (付随情報) | emd-42976-v30.xml emd-42976.xml | 25.8 KB 25.8 KB | 表示 表示 | EMDBヘッダ |
| FSC (解像度算出) | emd_42976_fsc.xml | 15.9 KB | 表示 | FSCデータファイル |
| 画像 | emd_42976.png | 130.3 KB | ||
| マスクデータ | emd_42976_msk_1.map | 824 MB | マスクマップ | |
| Filedesc metadata | emd-42976.cif.gz | 7.4 KB | ||
| その他 | emd_42976_additional_1.map.gz emd_42976_additional_2.map.gz emd_42976_half_map_1.map.gz emd_42976_half_map_2.map.gz | 401.7 MB 205.3 MB 395.4 MB 395.4 MB | ||
| アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-42976 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-42976 | HTTPS FTP |
-関連構造データ
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リンク
| EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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マップ
| ファイル | ダウンロード / ファイル: emd_42976.map.gz / 形式: CCP4 / 大きさ: 824 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| 注釈 | Locally sharpened map for APO rP2X7 purified in KCl | ||||||||||||||||||||||||||||||||||||
| 投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||
| ボクセルのサイズ | X=Y=Z: 0.648 Å | ||||||||||||||||||||||||||||||||||||
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| 対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
| 詳細 | EMDB XML:
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-添付データ
-マスク #1
| ファイル | emd_42976_msk_1.map | ||||||||||||
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| 投影像・断面図 |
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| 密度ヒストグラム |
-追加マップ: Sharpened map for APO rP2X7 purified in KCl
| ファイル | emd_42976_additional_1.map | ||||||||||||
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| 注釈 | Sharpened map for APO rP2X7 purified in KCl | ||||||||||||
| 投影像・断面図 |
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| 密度ヒストグラム |
-追加マップ: Unsharpened map for APO rP2X7 purified in KCl
| ファイル | emd_42976_additional_2.map | ||||||||||||
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| 注釈 | Unsharpened map for APO rP2X7 purified in KCl | ||||||||||||
| 投影像・断面図 |
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| 密度ヒストグラム |
-ハーフマップ: Half map A for APO rP2X7 purified in KCl
| ファイル | emd_42976_half_map_1.map | ||||||||||||
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| 注釈 | Half map A for APO rP2X7 purified in KCl | ||||||||||||
| 投影像・断面図 |
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| 密度ヒストグラム |
-ハーフマップ: Half map B for APO rP2X7 purified in KCl
| ファイル | emd_42976_half_map_2.map | ||||||||||||
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| 注釈 | Half map B for APO rP2X7 purified in KCl | ||||||||||||
| 投影像・断面図 |
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| 密度ヒストグラム |
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試料の構成要素
-全体 : Membrane protein
| 全体 | 名称: Membrane protein |
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| 要素 |
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-超分子 #1: Membrane protein
| 超分子 | 名称: Membrane protein / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1 |
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| 由来(天然) | 生物種: ![]() |
-分子 #1: P2X purinoceptor 7
| 分子 | 名称: P2X purinoceptor 7 / タイプ: protein_or_peptide / ID: 1 / コピー数: 3 / 光学異性体: LEVO |
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| 由来(天然) | 生物種: ![]() |
| 分子量 | 理論値: 68.472461 KDa |
| 組換発現 | 生物種: Homo sapiens (ヒト) |
| 配列 | 文字列: MPACCSWNDV FQYETNKVTR IQSVNYGTIK WILHMTVFSY VSFALMSDKL YQRKEPLISS VHTKVKGVAE VTENVTEGGV TKLVHGIFD TADYTLPLQG NSFFVMTNYL KSEGQEQKLC PEYPSRGKQC HSDQGCIKGW MDPQSKGIQT GRCIPYDQKR K TCEIFAWC ...文字列: MPACCSWNDV FQYETNKVTR IQSVNYGTIK WILHMTVFSY VSFALMSDKL YQRKEPLISS VHTKVKGVAE VTENVTEGGV TKLVHGIFD TADYTLPLQG NSFFVMTNYL KSEGQEQKLC PEYPSRGKQC HSDQGCIKGW MDPQSKGIQT GRCIPYDQKR K TCEIFAWC PAEEGKEAPR PALLRSAENF TVLIKNNIDF PGHNYTTRNI LPGMNISCTF HKTWNPQCPI FRLGDIFQEI GE NFTEVAV QGGIMGIEIY WDCNLDSWSH RCQPKYSFRR LDDKYTNESL FPGYNFRYAK YYKENGMEKR TLIKAFGVRF DIL VFGTGG KFDIIQLVVY IGSTLSYFGL ATVCIDLIIN TYASTCCRSR VYPSCKCCEP CAVNEYYYRK KCEPIVEPKP TLKY VSFVD EPHIWMVDQQ LLGKSLQDVK GQEVPRPQTD FLELSRLSLS LHHSPPIPGQ PEEMQLLQIE AVPRSRDSPD WCQCG NCLP SQLPENRRAL EELCCRRKPG QCITTSELFS KIVLSREALQ LLLLYQEPLL ALEGEAINSK LRHCAYRSYA TWRFVS QDM ADFAILPSCC RWKIRKEFPK TQGQYSGFKY PY UniProtKB: P2X purinoceptor 7 |
-分子 #2: GUANOSINE-5'-DIPHOSPHATE
| 分子 | 名称: GUANOSINE-5'-DIPHOSPHATE / タイプ: ligand / ID: 2 / コピー数: 3 / 式: GDP |
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| 分子量 | 理論値: 443.201 Da |
| Chemical component information | ![]() ChemComp-GDP: |
-分子 #3: ZINC ION
| 分子 | 名称: ZINC ION / タイプ: ligand / ID: 3 / コピー数: 6 / 式: ZN |
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| 分子量 | 理論値: 65.409 Da |
-分子 #4: 2-acetamido-2-deoxy-beta-D-glucopyranose
| 分子 | 名称: 2-acetamido-2-deoxy-beta-D-glucopyranose / タイプ: ligand / ID: 4 / コピー数: 9 / 式: NAG |
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| 分子量 | 理論値: 221.208 Da |
| Chemical component information | ![]() ChemComp-NAG: |
-分子 #5: PALMITIC ACID
| 分子 | 名称: PALMITIC ACID / タイプ: ligand / ID: 5 / コピー数: 15 / 式: PLM |
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| 由来(天然) | 生物種: ![]() |
| 分子量 | 理論値: 256.424 Da |
| Chemical component information | ![]() ChemComp-PLM: |
-分子 #6: water
| 分子 | 名称: water / タイプ: ligand / ID: 6 / コピー数: 231 / 式: HOH |
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| 分子量 | 理論値: 18.015 Da |
| Chemical component information | ![]() ChemComp-HOH: |
-実験情報
-構造解析
| 手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
| 試料の集合状態 | particle |
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試料調製
| 緩衝液 | pH: 7 |
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| 凍結 | 凍結剤: ETHANE / 装置: FEI VITROBOT MARK IV |
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電子顕微鏡法
| 顕微鏡 | FEI TITAN KRIOS |
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| 特殊光学系 | エネルギーフィルター - スリット幅: 20 eV |
| 撮影 | フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 実像数: 11353 / 平均電子線量: 45.0 e/Å2 |
| 電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
| 電子光学系 | C2レンズ絞り径: 70.0 µm / 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / Cs: 2.7 mm 最大 デフォーカス(公称値): 1.4000000000000001 µm 最小 デフォーカス(公称値): 0.8 µm / 倍率(公称値): 130000 |
| 試料ステージ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
ムービー
コントローラー
万見について




キーワード
データ登録者
米国, 2件
引用




Z (Sec.)
Y (Row.)
X (Col.)




























































Homo sapiens (ヒト)



解析
FIELD EMISSION GUN


