+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 6nt3 | |||||||||||||||
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タイトル | Cryo-EM structure of a human-cockroach hybrid Nav channel. | |||||||||||||||
要素 | Sodium channel protein type 9 subunit alpha, Sodium channel protein PaFPC1, chimeric construct | |||||||||||||||
キーワード | MEMBRANE PROTEIN / Sodium channel / scorpion toxin / electrical signaling / fast inactivation | |||||||||||||||
機能・相同性 | 機能・相同性情報 detection of mechanical stimulus involved in sensory perception / membrane depolarization during action potential / voltage-gated sodium channel complex / cardiac muscle cell action potential involved in contraction / Interaction between L1 and Ankyrins / voltage-gated sodium channel activity / sodium ion transport / behavioral response to pain / Phase 0 - rapid depolarisation / detection of temperature stimulus involved in sensory perception of pain ...detection of mechanical stimulus involved in sensory perception / membrane depolarization during action potential / voltage-gated sodium channel complex / cardiac muscle cell action potential involved in contraction / Interaction between L1 and Ankyrins / voltage-gated sodium channel activity / sodium ion transport / behavioral response to pain / Phase 0 - rapid depolarisation / detection of temperature stimulus involved in sensory perception of pain / neuronal action potential / sodium ion transmembrane transport / sensory perception of pain / post-embryonic development / response to toxic substance / Sensory perception of sweet, bitter, and umami (glutamate) taste / circadian rhythm / inflammatory response / axon / plasma membrane 類似検索 - 分子機能 | |||||||||||||||
生物種 | Periplaneta americana (ワモンゴキブリ) 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: 3.4 Å | |||||||||||||||
データ登録者 | Clairfeuille, T. / Rohou, A. / Payandeh, J. | |||||||||||||||
引用 | ジャーナル: Science / 年: 2019 タイトル: Structural basis of α-scorpion toxin action on Na channels. 著者: Thomas Clairfeuille / Alexander Cloake / Daniel T Infield / José P Llongueras / Christopher P Arthur / Zhong Rong Li / Yuwen Jian / Marie-France Martin-Eauclaire / Pierre E Bougis / Claudio ...著者: Thomas Clairfeuille / Alexander Cloake / Daniel T Infield / José P Llongueras / Christopher P Arthur / Zhong Rong Li / Yuwen Jian / Marie-France Martin-Eauclaire / Pierre E Bougis / Claudio Ciferri / Christopher A Ahern / Frank Bosmans / David H Hackos / Alexis Rohou / Jian Payandeh / 要旨: Fast inactivation of voltage-gated sodium (Na) channels is essential for electrical signaling, but its mechanism remains poorly understood. Here we determined the structures of a eukaryotic Na ...Fast inactivation of voltage-gated sodium (Na) channels is essential for electrical signaling, but its mechanism remains poorly understood. Here we determined the structures of a eukaryotic Na channel alone and in complex with a lethal α-scorpion toxin, AaH2, by electron microscopy, both at 3.5-angstrom resolution. AaH2 wedges into voltage-sensing domain IV (VSD4) to impede fast activation by trapping a deactivated state in which gating charge interactions bridge to the acidic intracellular carboxyl-terminal domain. In the absence of AaH2, the S4 helix of VSD4 undergoes a ~13-angstrom translation to unlatch the intracellular fast-inactivation gating machinery. Highlighting the polypharmacology of α-scorpion toxins, AaH2 also targets an unanticipated receptor site on VSD1 and a pore glycan adjacent to VSD4. Overall, this work provides key insights into fast inactivation, electromechanical coupling, and pathogenic mutations in Na channels. | |||||||||||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 6nt3.cif.gz | 269.9 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb6nt3.ent.gz | 204.5 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 6nt3.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
文書・要旨 | 6nt3_validation.pdf.gz | 1.8 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 6nt3_full_validation.pdf.gz | 1.8 MB | 表示 | |
XML形式データ | 6nt3_validation.xml.gz | 55.5 KB | 表示 | |
CIF形式データ | 6nt3_validation.cif.gz | 80.7 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/nt/6nt3 ftp://data.pdbj.org/pub/pdb/validation_reports/nt/6nt3 | HTTPS FTP |
-関連構造データ
-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: 178763.656 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) Periplaneta americana (ワモンゴキブリ), (組換発現) Homo sapiens (ヒト) 遺伝子: SCN9A, NENA / 細胞株 (発現宿主): Expi293 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: D0E0C2, UniProt: Q15858 |
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-糖 , 3種, 7分子
#2: 多糖 | beta-D-mannopyranose-(1-3)-[beta-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-3)-2-acetamido-2- ...beta-D-mannopyranose-(1-3)-[beta-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-3)-2-acetamido-2-deoxy-beta-D-glucopyranose | ||
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#3: 多糖 | #4: 糖 | ChemComp-NAG / |
-非ポリマー , 4種, 7分子
#5: 化合物 | ChemComp-Y01 / | ||||
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#6: 化合物 | ChemComp-76F / ( #7: 化合物 | ChemComp-LHG / | #8: 化合物 | ChemComp-AJP / | |
-詳細
Has protein modification | 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: NavPas-VSD4 / タイプ: COMPLEX / Entity ID: #1 / 由来: RECOMBINANT |
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分子量 | 値: 0.155 MDa / 実験値: NO |
由来(天然) | 生物種: Periplaneta americana (ワモンゴキブリ) |
由来(組換発現) | 生物種: Homo sapiens (ヒト) / 細胞: Expi293 |
緩衝液 | pH: 7.5 |
試料 | 濃度: 1.5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | 詳細: Grids were plasma etched using the Solarus plasma cleaner (Gatan) in the hydrogen-oxygen setting. Grids were etched for 4 minutes on each side to remove burrs from hole edges. The grids were ...詳細: Grids were plasma etched using the Solarus plasma cleaner (Gatan) in the hydrogen-oxygen setting. Grids were etched for 4 minutes on each side to remove burrs from hole edges. The grids were then coated on both sides with 5nm of Au/Pd which was plasma deposited using the Leica ACE600 (Leica). グリッドの材料: COPPER / グリッドのサイズ: 200 divisions/in. / グリッドのタイプ: C-flat-2/1 |
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277 K |
-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 / Cs: 2.7 mm / アライメント法: ZEMLIN TABLEAU |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 平均露光時間: 10 sec. / 電子線照射量: 40 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 撮影したグリッド数: 1 / 実像数: 10421 |
電子光学装置 | エネルギーフィルター名称: GIF Bioquantum / エネルギーフィルタースリット幅: 20 eV |
画像スキャン | 動画フレーム数/画像: 40 |
-解析
ソフトウェア | 名称: PHENIX / バージョン: 1.14_3260: / 分類: 精密化 | ||||||||||||||||||||||||
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EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
粒子像の選択 | 詳細: Automated picking using a soft-edged disc as a template yielded 591739 candidate coordinates. 2D classification led to the selection of 334055 particles for further analysis. | ||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||
3次元再構成 | 解像度: 3.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 150583 / アルゴリズム: FOURIER SPACE 詳細: No information from spatial frequencies higher than 1/5A were ever used during refinement. クラス平均像の数: 1 / 対称性のタイプ: POINT |