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基本情報
登録情報 | データベース: EMDB / ID: EMD-31519 | |||||||||
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タイトル | structure of a channel | |||||||||
![]() | Cryo-EM map of a channel | |||||||||
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![]() | ion channel / four-domain / MEMBRANE PROTEIN | |||||||||
機能・相同性 | ![]() voltage-gated sodium channel activity involved in AV node cell action potential / voltage-gated sodium channel activity involved in bundle of His cell action potential / voltage-gated sodium channel activity involved in Purkinje myocyte action potential / voltage-gated sodium channel activity involved in SA node cell action potential / bundle of His cell action potential / regulation of ventricular cardiac muscle cell membrane depolarization / AV node cell action potential / SA node cell action potential / AV node cell to bundle of His cell communication / membrane depolarization during SA node cell action potential ...voltage-gated sodium channel activity involved in AV node cell action potential / voltage-gated sodium channel activity involved in bundle of His cell action potential / voltage-gated sodium channel activity involved in Purkinje myocyte action potential / voltage-gated sodium channel activity involved in SA node cell action potential / bundle of His cell action potential / regulation of ventricular cardiac muscle cell membrane depolarization / AV node cell action potential / SA node cell action potential / AV node cell to bundle of His cell communication / membrane depolarization during SA node cell action potential / sodium channel complex / response to denervation involved in regulation of muscle adaptation / membrane depolarization during atrial cardiac muscle cell action potential / regulation of atrial cardiac muscle cell membrane repolarization / cardiac ventricle development / voltage-gated sodium channel activity involved in cardiac muscle cell action potential / brainstem development / membrane depolarization during AV node cell action potential / membrane depolarization during bundle of His cell action potential / atrial cardiac muscle cell action potential / membrane depolarization during Purkinje myocyte cell action potential / regulation of atrial cardiac muscle cell membrane depolarization / positive regulation of action potential / telencephalon development / 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 / ventricular cardiac muscle cell action potential / regulation of ventricular cardiac muscle cell membrane repolarization / cardiac muscle cell action potential involved in contraction / voltage-gated sodium channel complex / sodium ion import across plasma membrane / regulation of cardiac muscle cell contraction / ankyrin binding / voltage-gated sodium channel activity / sodium ion transport / nitric-oxide synthase binding / fibroblast growth factor binding / odontogenesis of dentin-containing tooth / regulation of heart rate by cardiac conduction / intercalated disc / host cell membrane / membrane depolarization / lateral plasma membrane / neuronal action potential / positive regulation of heart rate / cardiac muscle contraction / T-tubule / sodium ion transmembrane transport / regulation of heart rate / cellular response to calcium ion / positive regulation of epithelial cell proliferation / bioluminescence / cerebellum development / generation of precursor metabolites and energy / sarcolemma / caveola / Z disc / scaffold protein binding / transmembrane transporter binding / calmodulin binding / protein domain specific binding / axon / ubiquitin protein ligase binding / viral envelope / symbiont entry into host cell / protein kinase binding / virion attachment to host cell / perinuclear region of cytoplasm / virion membrane / enzyme binding / cell surface / endoplasmic reticulum / membrane / plasma membrane 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: 3.4 Å | |||||||||
![]() | Jiang DJ / Catterall WA | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Open-state structure and pore gating mechanism of the cardiac sodium channel. 著者: Daohua Jiang / Richard Banh / Tamer M Gamal El-Din / Lige Tonggu / Michael J Lenaeus / Régis Pomès / Ning Zheng / William A Catterall / ![]() ![]() ![]() 要旨: The heartbeat is initiated by voltage-gated sodium channel Na1.5, which opens rapidly and triggers the cardiac action potential; however, the structural basis for pore opening remains unknown. Here, ...The heartbeat is initiated by voltage-gated sodium channel Na1.5, which opens rapidly and triggers the cardiac action potential; however, the structural basis for pore opening remains unknown. Here, we blocked fast inactivation with a mutation and captured the elusive open-state structure. The fast inactivation gate moves away from its receptor, allowing asymmetric opening of pore-lining S6 segments, which bend and rotate at their intracellular ends to dilate the activation gate to ∼10 Å diameter. Molecular dynamics analyses predict physiological rates of Na conductance. The open-state pore blocker propafenone binds in a high-affinity pose, and drug-access pathways are revealed through the open activation gate and fenestrations. Comparison with mutagenesis results provides a structural map of arrhythmia mutations that target the activation and fast inactivation gates. These results give atomic-level insights into molecular events that underlie generation of the action potential, open-state drug block, and fast inactivation of cardiac sodium channels, which initiate the heartbeat. | |||||||||
履歴 |
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構造の表示
ムービー |
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構造ビューア | EMマップ: ![]() ![]() ![]() |
添付画像 |
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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 | ![]() | 117.9 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 16.8 KB 16.8 KB | 表示 表示 | ![]() |
FSC (解像度算出) | ![]() | 9.1 KB | 表示 | ![]() |
画像 | ![]() | 71 KB | ||
Filedesc metadata | ![]() | 7.6 KB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 516 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 515.6 KB | 表示 | |
XML形式データ | ![]() | 11.6 KB | 表示 | |
CIF形式データ | ![]() | 15.3 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
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リンク
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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注釈 | Cryo-EM map of a channel | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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: 1.056 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
CCP4マップ ヘッダ情報:
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-添付データ
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試料の構成要素
-全体 : sodium channel with four homologous domains
全体 | 名称: sodium channel with four homologous domains |
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要素 |
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-超分子 #1: sodium channel with four homologous domains
超分子 | 名称: sodium channel with four homologous domains / 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: ![]() ![]() |
分子量 | 理論値: 250 KDa |
-分子 #1: Sodium channel protein type 5 subunit alpha,Sodium channel protei...
分子 | 名称: Sodium channel protein type 5 subunit alpha,Sodium channel protein type 5 subunit alpha,Sodium channel protein type 5 subunit alpha,G protein/GFP fusion protein タイプ: protein_or_peptide / ID: 1 / コピー数: 1 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() |
分子量 | 理論値: 209.030625 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: MANLLLPRGT SSFRRFTRES LAAIEKRMAE KQARGGSATS QESREGLQEE EAPRPQLDLQ ASKKLPDLYG NPPRELIGEP LEDLDPFYS TQKTFIVLNK GKTIFRFSAT NALYVLSPFH PVRRAAVKIL VHSLFSMLIM CTILTNCVFM AQHDPPPWTK Y VEYTFTAI ...文字列: MANLLLPRGT SSFRRFTRES LAAIEKRMAE KQARGGSATS QESREGLQEE EAPRPQLDLQ ASKKLPDLYG NPPRELIGEP LEDLDPFYS TQKTFIVLNK GKTIFRFSAT NALYVLSPFH PVRRAAVKIL VHSLFSMLIM CTILTNCVFM AQHDPPPWTK Y VEYTFTAI YTFESLVKIL ARGFCLHAFT FLRDPWNWLD FSVIVMAYTT EFVDLGNVSA LRTFRVLRAL KTISVISGLK TI VGALIQS VKKLADVMVL TVFCLSVFAL IGLQLFMGNL RHKCVRNFTE LNGTNGSVEA DGLVWNSLDV YLNDPANYLL KNG TTDVLL CGNSSDAGTC PEGYRCLKAG ENPDHGYTSF DSFAWAFLAL FRLMTQDCWE RLYQQTLRSA GKIYMIFFML VIFL GSFYL VNLILAVVAM AYEEQNQATI AETEEKEKRF QEAMEMLKKE HEALTIRGVD TVSRSSARQR ALSAVSVLTS ALEEL EESH RKCPPCWNRF AQHYLIWECC PLWMSIKQKV KFVVMDPFAD LTITMCIVLN TLFMALEHYN MTAEFEEMLQ VGNLVF TGI FTAEMTFKII ALDPYYYFQQ GWNIFDSIIV ILSLMELGLS RMGNLSVLRS FRLLRVFKLA KSWPTLNTLI KIIGNSV GA LGNLTLVLAI IVFIFAVVGM QLFGKNYSEL RHRISDSGLL PRWHMMDFFH AFLIIFRILC GEWIETMWDC MEVSGQSL C LLVFLLVMVI GNLVVLNLFL ALLLSSFSAD NLTAPDEDGE MNNLQLALAR IQRGLRFVKR TTWDFCCGIL RRRPKKPAA LATHSQLPSC ITAPRSPPPP EVEKVPPARK ETRFEEDKRP GQGTPGDSEP VCVPIAVAES DTEDQEEDEE NGKVWWRLRK TCYRIVEHS WFETFIIFMI LLSSGALAFE DIYLEERKTI KVLLEYADKM FTYVFVLEML LKWVAYGFKK YFTNAWCWLD F LIVDVSLV SLVANTLGFA EMGPIKSLRT LRALRPLRAL SRFEGMRVVV NALVGAIPSI MNVLLVCLIF WLIFSIMGVN LF AGKFGRC INQTEGDLPL NYTIVNNKSE CESFNVTGEL YWTKVKVNFD NVGAGYLALL QVATFKGWMD IMYAAVDSRG YEE QPQWED NLYMYIYFVV FIIFGSFFTL NLFIGVIIDN FNQQKKKLGG QDQQQTEEQK KYYNAMKKLG SKKPQKPIPR PLNK YQGFI FDIVTKQAFD VTIMFLICLN MVTMMVETDD QSPEKVNILA KINLLFVAIF TGECIVKMAA LRHYYFTNSW NIFDF VVVI LSIVGTVLSD IIQKYFFSPT LFRVIRLARI GRILRLIRGA KGIRTLLFAL MMSLPALFNI GLLLFLVMFI YSIFGM ANF AYVKWEAGID DMFNFQTFAN SMLCLFQITT SAGWDGLLSP ILNTGPPYCD PNLPNSNGSR GNCGSPAVGI LFFTTYI II SFLIVVNMYI AIILENFSVA TEESTEPLSE DDFDMFYEIW EKFDPEATQF IEYLALSDFA DALSEPLRIA KPNQISLI N MDLPMVSGDR IHCMDILFAF TKRVLGESGE MDALKIQMEE KFMAANPSKI SYEPITTTLE VLFQGPGSMV SKGEELFTG VVPILVELDG DVNGHKFSVS GEGEGDATYG KLTLKFICTT GKLPVPWPTL VTTLTYGVQC FSRYPDHMKQ HDFFKSAMPE GYVQERTIF FKDDGNYKTR AEVKFEGDTL VNRIELKGID FKEDGNILGH KLEYNYNSHN VYIMADKQKN GIKVNFKIRH N IEDGSVQL ADHYQQNTPI GDGPVLLPDN HYLSTQSALS KDPNEKRDHM VLLEFVTAAG ITLGMDELYK GSDYKDDDDK UniProtKB: Sodium channel protein type 5 subunit alpha, Sodium channel protein type 5 subunit alpha, Sodium channel protein type 5 subunit alpha, G protein/GFP fusion protein |
-分子 #2: 2-acetamido-2-deoxy-beta-D-glucopyranose
分子 | 名称: 2-acetamido-2-deoxy-beta-D-glucopyranose / タイプ: ligand / ID: 2 / コピー数: 3 / 式: NAG |
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分子量 | 理論値: 221.208 Da |
Chemical component information | ![]() ChemComp-NAG: |
-分子 #3: [(2~{R})-1-[2-azanylethoxy(oxidanyl)phosphoryl]oxy-3-hexadecanoyl...
分子 | 名称: [(2~{R})-1-[2-azanylethoxy(oxidanyl)phosphoryl]oxy-3-hexadecanoyloxy-propan-2-yl] (~{Z})-octadec-9-enoate タイプ: ligand / ID: 3 / コピー数: 11 / 式: 6OU |
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分子量 | 理論値: 717.996 Da |
Chemical component information | ![]() ChemComp-6OU: |
-分子 #4: 1-[2-[(2R)-2-oxidanyl-3-(propylamino)propoxy]phenyl]-3-phenyl-pro...
分子 | 名称: 1-[2-[(2R)-2-oxidanyl-3-(propylamino)propoxy]phenyl]-3-phenyl-propan-1-one タイプ: ligand / ID: 4 / コピー数: 1 / 式: 4Y4 |
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分子量 | 理論値: 341.444 Da |
Chemical component information | ![]() ChemComp-4Y4: |
-分子 #5: (3beta,14beta,17beta,25R)-3-[4-methoxy-3-(methoxymethyl)butoxy]sp...
分子 | 名称: (3beta,14beta,17beta,25R)-3-[4-methoxy-3-(methoxymethyl)butoxy]spirost-5-en タイプ: ligand / ID: 5 / コピー数: 2 / 式: 9Z9 |
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分子量 | 理論値: 544.805 Da |
Chemical component information | ![]() ChemComp-9Z9: |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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試料調製
濃度 | 5 mg/mL |
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緩衝液 | pH: 6 |
グリッド | 材質: GOLD / メッシュ: 300 / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 時間: 60 sec. |
凍結 | 凍結剤: ETHANE |
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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 - 名称: GIF Quantum ER / 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 K2 SUMMIT (4k x 4k) 検出モード: SUPER-RESOLUTION / 平均電子線量: 60.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / Cs: 2.7 mm |
試料ステージ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER ホルダー冷却材: NITROGEN |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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画像解析
-原子モデル構築 1
精密化 | 空間: REAL / プロトコル: RIGID BODY FIT |
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得られたモデル | ![]() PDB-7fbs: |