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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: 7w9m | ||||||
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| タイトル | Cryo-EM structure of human Nav1.7(E406K) in complex with auxiliary beta subunits, ProTx-II and tetrodotoxin (S6IV pi helix conformer) | ||||||
要素 |
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キーワード | MEMBRANE PROTEIN / Nav1.7 / SCN9A / cryo-EM | ||||||
| 機能・相同性 | 機能・相同性情報response to pyrethroid / corticospinal neuron axon guidance / positive regulation of voltage-gated sodium channel activity / action potential propagation / detection of mechanical stimulus involved in sensory perception / voltage-gated sodium channel activity involved in cardiac muscle cell action potential / regulation of atrial cardiac muscle cell membrane depolarization / voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization / membrane depolarization during Purkinje myocyte cell action potential / cardiac conduction ...response to pyrethroid / corticospinal neuron axon guidance / positive regulation of voltage-gated sodium channel activity / action potential propagation / detection of mechanical stimulus involved in sensory perception / voltage-gated sodium channel activity involved in cardiac muscle cell action potential / regulation of atrial cardiac muscle cell membrane depolarization / voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization / membrane depolarization during Purkinje myocyte cell action potential / cardiac conduction / membrane depolarization during cardiac muscle cell action potential / membrane depolarization during action potential / positive regulation of sodium ion transport / regulation of sodium ion transmembrane transport / axon initial segment / regulation of ventricular cardiac muscle cell membrane repolarization / node of Ranvier / cardiac muscle cell action potential involved in contraction / voltage-gated sodium channel complex / sodium channel inhibitor activity / neuronal action potential propagation / locomotion / Interaction between L1 and Ankyrins / voltage-gated sodium channel activity / Phase 0 - rapid depolarisation / detection of temperature stimulus involved in sensory perception of pain / regulation of heart rate by cardiac conduction / behavioral response to pain / intercalated disc / sodium channel regulator activity / membrane depolarization / neuronal action potential / cardiac muscle contraction / T-tubule / sensory perception of pain / axon terminus / axon guidance / sodium ion transmembrane transport / post-embryonic development / circadian rhythm / positive regulation of neuron projection development / response to toxic substance / Sensory perception of sweet, bitter, and umami (glutamate) taste / nervous system development / response to heat / gene expression / chemical synaptic transmission / perikaryon / transmembrane transporter binding / cell adhesion / inflammatory response / axon / synapse / extracellular region / 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: 3 Å | ||||||
データ登録者 | Yan, N. / Huang, G. / Liu, D. / Wei, P. / Shen, H. | ||||||
| 資金援助 | 中国, 1件
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引用 | ジャーナル: Cell Rep / 年: 2022タイトル: High-resolution structures of human Na1.7 reveal gating modulation through α-π helical transition of S6. 著者: Gaoxingyu Huang / Dongliang Liu / Weipeng Wang / Qiurong Wu / Jiaofeng Chen / Xiaojing Pan / Huaizong Shen / Nieng Yan / ![]() 要旨: Na1.7 represents a preeminent target for next-generation analgesics for its critical role in pain sensation. Here we report a 2.2-Å resolution cryo-EM structure of wild-type (WT) Na1.7 complexed ...Na1.7 represents a preeminent target for next-generation analgesics for its critical role in pain sensation. Here we report a 2.2-Å resolution cryo-EM structure of wild-type (WT) Na1.7 complexed with the β1 and β2 subunits that reveals several previously indiscernible cytosolic segments. Reprocessing of the cryo-EM data for our reported structures of Na1.7(E406K) bound to various toxins identifies two distinct conformations of S6, one composed of α helical turns only and the other containing a π helical turn in the middle. The structure of ligand-free Na1.7(E406K), determined at 3.5-Å resolution, is identical to the WT channel, confirming that binding of Huwentoxin IV or Protoxin II to VSD allosterically induces the α → π transition of S6. The local secondary structural shift leads to contraction of the intracellular gate, closure of the fenestration on the interface of repeats I and IV, and rearrangement of the binding site for the fast inactivation motif. | ||||||
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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 | 7w9m.cif.gz | 358 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb7w9m.ent.gz | 267.3 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 7w9m.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/w9/7w9m ftp://data.pdbj.org/pub/pdb/validation_reports/w9/7w9m | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 32370MC ![]() 7w9kC ![]() 7w9lC ![]() 7w9pC ![]() 7w9tC 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 , 1種, 1分子 A
| #1: タンパク質 | 分子量: 231211.922 Da / 分子数: 1 / 変異: E406K / 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 | | #6: 糖 | ChemComp-NAG / |
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-非ポリマー , 4種, 8分子 






| #5: 化合物 | ChemComp-9SR / ( | ||
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| #7: 化合物 | ChemComp-P5S / | ||
| #8: 化合物 | ChemComp-Y01 / #9: 化合物 | ChemComp-LPE / | |
-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: Human voltage-gated sodium channel Nav1.7 in complex with auxiliary beta subunits タイプ: COMPLEX / Entity ID: #1-#3 / 由来: RECOMBINANT |
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| 分子量 | 値: 279.99 kDa/nm / 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: 7.4 |
| 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
| 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): 1800 nm / 最小 デフォーカス(公称値): 1500 nm |
| 撮影 | 電子線照射量: 50 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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| 対称性 | 点対称性: C1 (非対称) |
| 3次元再構成 | 解像度: 3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 188952 / 対称性のタイプ: POINT |
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万見について




Homo sapiens (ヒト)
中国, 1件
引用








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FIELD EMISSION GUN