+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 8g1a | ||||||
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タイトル | Cryo-EM structure of Nav1.7 with CBD | ||||||
要素 |
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キーワード | MEMBRANE PROTEIN (膜タンパク質) / Cryo-EM (低温電子顕微鏡法) / sodium channel (ナトリウムチャネル) / VGSC / Nav1.7 / CBD | ||||||
機能・相同性 | 機能・相同性情報 corticospinal neuron axon guidance / positive regulation of voltage-gated sodium channel activity / response to pyrethroid / detection of mechanical stimulus involved in sensory perception / voltage-gated sodium channel activity involved in Purkinje myocyte action potential / voltage-gated sodium channel activity involved in cardiac muscle cell action potential / regulation of sodium ion transmembrane transporter activity / voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization / membrane depolarization during Purkinje myocyte cell action potential / regulation of atrial cardiac muscle cell membrane depolarization ...corticospinal neuron axon guidance / positive regulation of voltage-gated sodium channel activity / response to pyrethroid / detection of mechanical stimulus involved in sensory perception / voltage-gated sodium channel activity involved in Purkinje myocyte action potential / voltage-gated sodium channel activity involved in cardiac muscle cell action potential / regulation of sodium ion transmembrane transporter activity / voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization / membrane depolarization during Purkinje myocyte cell action potential / regulation of atrial cardiac muscle cell membrane depolarization / cardiac conduction / voltage-gated sodium channel complex / membrane depolarization during cardiac muscle cell action potential / positive regulation of sodium ion transport / ランヴィエの絞輪 / cardiac muscle cell action potential involved in contraction / high voltage-gated calcium channel activity / locomotion / voltage-gated sodium channel activity / regulation of ventricular cardiac muscle cell membrane repolarization / sodium channel inhibitor activity / neuronal action potential propagation / Interaction between L1 and Ankyrins / sodium ion transport / voltage-gated calcium channel complex / behavioral response to pain / Phase 0 - rapid depolarisation / regulation of heart rate by cardiac conduction / 脱分極 / detection of temperature stimulus involved in sensory perception of pain / calcium ion import across plasma membrane / sodium channel regulator activity / sodium ion transmembrane transport / 介在板 / cardiac muscle contraction / sensory perception of pain / 横行小管 / post-embryonic development / 軸索誘導 / response to toxic substance / Sensory perception of sweet, bitter, and umami (glutamate) taste / positive regulation of neuron projection development / 概日リズム / nervous system development / 遺伝子発現 / response to heat / perikaryon / chemical synaptic transmission / transmembrane transporter binding / 細胞接着 / 炎症 / 神経繊維 / シナプス / extracellular region / 細胞膜 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: 2.8 Å | ||||||
データ登録者 | Fan, X. / Huang, J. / Yan, N. | ||||||
資金援助 | フランス, 1件
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引用 | ジャーナル: Nat Commun / 年: 2023 タイトル: Cannabidiol inhibits Na channels through two distinct binding sites. 著者: Jian Huang / Xiao Fan / Xueqin Jin / Sooyeon Jo / Hanxiong Bear Zhang / Akie Fujita / Bruce P Bean / Nieng Yan / 要旨: Cannabidiol (CBD), a major non-psychoactive phytocannabinoid in cannabis, is an effective treatment for some forms of epilepsy and pain. At high concentrations, CBD interacts with a huge variety of ...Cannabidiol (CBD), a major non-psychoactive phytocannabinoid in cannabis, is an effective treatment for some forms of epilepsy and pain. At high concentrations, CBD interacts with a huge variety of proteins, but which targets are most relevant for clinical actions is still unclear. Here we show that CBD interacts with Na1.7 channels at sub-micromolar concentrations in a state-dependent manner. Electrophysiological experiments show that CBD binds to the inactivated state of Na1.7 channels with a dissociation constant of about 50 nM. The cryo-EM structure of CBD bound to Na1.7 channels reveals two distinct binding sites. One is in the IV-I fenestration near the upper pore. The other binding site is directly next to the inactivated "wedged" position of the Ile/Phe/Met (IFM) motif on the short linker between repeats III and IV, which mediates fast inactivation. Consistent with producing a direct stabilization of the inactivated state, mutating residues in this binding site greatly reduced state-dependent binding of CBD. The identification of this binding site may enable design of compounds with improved properties compared to CBD itself. | ||||||
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 | 8g1a.cif.gz | 361.3 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb8g1a.ent.gz | 288.2 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 8g1a.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/g1/8g1a ftp://data.pdbj.org/pub/pdb/validation_reports/g1/8g1a | HTTPS FTP |
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-関連構造データ
関連構造データ | 29665MC 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
-タンパク質 , 1種, 1分子 A
#1: タンパク質 | 分子量: 226620.047 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: SCN9A, NENA / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q15858 |
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-Sodium channel subunit beta- ... , 2種, 2分子 BC
#2: タンパク質 | 分子量: 24732.115 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: SCN1B / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q07699 |
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#3: タンパク質 | 分子量: 24355.859 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: SCN2B, UNQ326/PRO386 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: O60939 |
-糖 , 2種, 8分子
#4: 多糖 | #5: 糖 | ChemComp-NAG / |
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-非ポリマー , 6種, 27分子
#6: 化合物 | #7: 化合物 | #8: 化合物 | ChemComp-Y01 / #9: 化合物 | ChemComp-9Z9 / ( | #10: 化合物 | ChemComp-LPE / #11: 化合物 | ChemComp-PCW / |
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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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-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: Human voltage-gated sodium channel Nav1.7 with beta subunits タイプ: COMPLEX / Entity ID: #1-#3 / 由来: RECOMBINANT |
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分子量 | 実験値: NO |
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: 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 |
-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 FIELDBright-field microscopy / 最大 デフォーカス(公称値): 1400 nm / 最小 デフォーカス(公称値): 1200 nm |
撮影 | 電子線照射量: 50 e/Å2 / 検出モード: SUPER-RESOLUTION フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
-解析
ソフトウェア | 名称: PHENIX / バージョン: 1.20_4459: / 分類: 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: 2.8 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 488974 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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