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基本情報
登録情報 | データベース: PDB / ID: 7xmf | ||||||
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タイトル | Cryo-EM structure of human NaV1.7/beta1/beta2-Nav1.7-IN2 | ||||||
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![]() | TRANSPORT PROTEIN / Sodium channel | ||||||
機能・相同性 | ![]() corticospinal neuron axon guidance / positive regulation of voltage-gated sodium channel activity / action potential propagation / response to pyrethroid / detection of mechanical stimulus involved in sensory perception / voltage-gated sodium channel activity involved in cardiac muscle cell action potential / voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization / membrane depolarization during Purkinje myocyte cell action potential / cardiac conduction / regulation of sodium ion transmembrane transport ...corticospinal neuron axon guidance / positive regulation of voltage-gated sodium channel activity / action potential propagation / response to pyrethroid / detection of mechanical stimulus involved in sensory perception / voltage-gated sodium channel activity involved in cardiac muscle cell action potential / voltage-gated potassium channel activity involved in ventricular cardiac muscle cell action potential repolarization / membrane depolarization during Purkinje myocyte cell action potential / cardiac conduction / regulation of sodium ion transmembrane transport / regulation of atrial cardiac muscle cell membrane depolarization / membrane depolarization during cardiac muscle cell action potential / membrane depolarization during action potential / positive regulation of sodium ion transport / axon initial segment / cardiac muscle cell action potential involved in contraction / locomotion / regulation of ventricular cardiac muscle cell membrane repolarization / node of Ranvier / voltage-gated sodium channel complex / sodium channel inhibitor activity / neuronal action potential propagation / Interaction between L1 and Ankyrins / voltage-gated sodium channel activity / Phase 0 - rapid depolarisation / regulation of heart rate by cardiac conduction / behavioral response to pain / detection of temperature stimulus involved in sensory perception of pain / membrane depolarization / intercalated disc / sodium channel regulator activity / neuronal action potential / cardiac muscle contraction / axon terminus / sensory perception of pain / T-tubule / sodium ion transmembrane transport / axon guidance / post-embryonic development / positive regulation of neuron projection development / response to toxic substance / circadian rhythm / 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 | ![]() ![]() ![]() | ||||||
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: 3.07 Å | ||||||
![]() | Zhang, J.T. / Jiang, D.H. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural basis for Na1.7 inhibition by pore blockers. 著者: Jiangtao Zhang / Yiqiang Shi / Zhuo Huang / Yue Li / Bei Yang / Jianke Gong / Daohua Jiang / ![]() 要旨: Voltage-gated sodium channel Na1.7 plays essential roles in pain and odor perception. Na1.7 variants cause pain disorders. Accordingly, Na1.7 has elicited extensive attention in developing new ...Voltage-gated sodium channel Na1.7 plays essential roles in pain and odor perception. Na1.7 variants cause pain disorders. Accordingly, Na1.7 has elicited extensive attention in developing new analgesics. Here we present cryo-EM structures of human Na1.7/β1/β2 complexed with inhibitors XEN907, TC-N1752 and Na1.7-IN2, explaining specific binding sites and modulation mechanism for the pore blockers. These inhibitors bind in the central cavity blocking ion permeation, but engage different parts of the cavity wall. XEN907 directly causes α- to π-helix transition of DIV-S6 helix, which tightens the fast inactivation gate. TC-N1752 induces π-helix transition of DII-S6 helix mediated by a conserved asparagine on DIII-S6, which closes the activation gate. Na1.7-IN2 serves as a pore blocker without causing conformational change. Electrophysiological results demonstrate that XEN907 and TC-N1752 stabilize Na1.7 in inactivated state and delay the recovery from inactivation. Our results provide structural framework for Na1.7 modulation by pore blockers, and important implications for developing subtype-selective analgesics. | ||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 330.5 KB | 表示 | ![]() |
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PDB形式 | ![]() | 243.5 KB | 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 | ![]() 33295MC ![]() 7xm9C ![]() 7xmgC 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
-Sodium channel subunit beta- ... , 2種, 2分子 BC
#2: タンパク質 | 分子量: 54472.129 Da / 分子数: 1 / 由来タイプ: 組換発現 / 詳細: The fusion protein of Beta1, linker, GFP, and tag 由来: (組換発現) ![]() ![]() ![]() 遺伝子: SCN1B, gfp / 発現宿主: ![]() |
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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) ![]() ![]() |
-タンパク質 / 非ポリマー , 2種, 2分子 A

#1: タンパク質 | 分子量: 255679.906 Da / 分子数: 1 / 変異: W1150R / 由来タイプ: 組換発現 詳細: The fusion protein of Sodium channel, linker, GFP, and tag 由来: (組換発現) ![]() ![]() ![]() 遺伝子: SCN9A, NENA, gfp / 発現宿主: ![]() |
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#6: 化合物 | ChemComp-G2W / |
-糖 , 2種, 8分子 
#4: 多糖 | #5: 糖 | ChemComp-NAG / |
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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: Sodium channel / タイプ: COMPLEX / Entity ID: #1-#3 / 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: 7.5 |
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 |
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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: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2500 nm / 最小 デフォーカス(公称値): 1200 nm |
撮影 | 電子線照射量: 60 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
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解析
ソフトウェア | 名称: PHENIX / バージョン: 1.17.1_3660: / 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: 3.07 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 206251 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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