登録情報 データベース : PDB / ID : 7dtc 構造の表示 ダウンロードとリンクタイトル voltage-gated sodium channel Nav1.5-E1784K 要素Sodium channel protein type 5 subunit alpha 詳細 キーワード MEMBRANE PROTEIN / voltage-gated sodium channel機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
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 / 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 / response to denervation involved in regulation of muscle adaptation ... 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 / 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 / response to denervation involved in regulation of muscle adaptation / membrane depolarization during atrial cardiac muscle cell action potential / cardiac ventricle development / regulation of atrial cardiac muscle cell membrane repolarization / regulation of ventricular cardiac muscle cell membrane depolarization / voltage-gated sodium channel activity involved in cardiac muscle cell action potential / brainstem development / membrane depolarization during AV node cell action potential / positive regulation of 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 / cardiac conduction system development / telencephalon development / 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 / ventricular cardiac muscle cell action potential / cardiac muscle cell action potential involved in contraction / regulation of ventricular cardiac muscle cell membrane repolarization / voltage-gated sodium channel complex / regulation of cardiac muscle cell contraction / Interaction between L1 and Ankyrins / ankyrin binding / voltage-gated sodium channel activity / sodium ion transport / nitric-oxide synthase binding / Phase 0 - rapid depolarisation / fibroblast growth factor binding / odontogenesis of dentin-containing tooth / regulation of heart rate by cardiac conduction / membrane depolarization / intercalated disc / lateral plasma membrane / cardiac muscle contraction / T-tubule / sodium ion transmembrane transport / cerebellum development / regulation of heart rate / cellular response to calcium ion / positive regulation of epithelial cell proliferation / sarcolemma / caveola / Z disc / scaffold protein binding / transmembrane transporter binding / calmodulin binding / protein domain specific binding / ubiquitin protein ligase binding / protein kinase binding / nucleolus / perinuclear region of cytoplasm / enzyme binding / cell surface / endoplasmic reticulum / nucleoplasm / membrane / plasma membrane 類似検索 - 分子機能 Voltage gated sodium channel, alpha-5 subunit / Voltage-gated Na+ ion channel, cytoplasmic domain / Cytoplasmic domain of voltage-gated Na+ ion channel / SCN5A-like, C-terminal IQ motif / Sodium ion transport-associated / Voltage-gated sodium channel alpha subunit, inactivation gate / Sodium ion transport-associated / Voltage gated sodium channel, alpha subunit / Voltage-gated cation channel calcium and sodium / Voltage-dependent channel domain superfamily ... Voltage gated sodium channel, alpha-5 subunit / Voltage-gated Na+ ion channel, cytoplasmic domain / Cytoplasmic domain of voltage-gated Na+ ion channel / SCN5A-like, C-terminal IQ motif / Sodium ion transport-associated / Voltage-gated sodium channel alpha subunit, inactivation gate / Sodium ion transport-associated / Voltage gated sodium channel, alpha subunit / Voltage-gated cation channel calcium and sodium / Voltage-dependent channel domain superfamily / Ion transport domain / Ion transport protein 類似検索 - ドメイン・相同性生物種 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 : 3.3 Å 詳細データ登録者 Yan, N. / Pan, X. / Li, Z. 資金援助 中国, 1件 詳細 詳細を隠す組織 認可番号 国 Ministry of Science and Technology (MoST, China) 2016YFA0500402 中国
引用ジャーナル : Proc Natl Acad Sci U S A / 年 : 2021タイトル : Structure of human Na1.5 reveals the fast inactivation-related segments as a mutational hotspot for the long QT syndrome.著者 : Zhangqiang Li / Xueqin Jin / Tong Wu / Xin Zhao / Weipeng Wang / Jianlin Lei / Xiaojing Pan / Nieng Yan / 要旨 : Na1.5 is the primary voltage-gated Na (Na) channel in the heart. Mutations of Na1.5 are associated with various cardiac disorders exemplified by the type 3 long QT syndrome (LQT3) and Brugada ... Na1.5 is the primary voltage-gated Na (Na) channel in the heart. Mutations of Na1.5 are associated with various cardiac disorders exemplified by the type 3 long QT syndrome (LQT3) and Brugada syndrome (BrS). E1784K is a common mutation that has been found in both LQT3 and BrS patients. Here we present the cryo-EM structure of the human Na1.5-E1784K variant at an overall resolution of 3.3 Å. The structure is nearly identical to that of the wild-type human Na1.5 bound to quinidine. Structural mapping of 91- and 178-point mutations that are respectively associated with LQT3 and BrS reveals a unique distribution pattern for LQT3 mutations. Whereas the BrS mutations spread evenly on the structure, LQT3 mutations are clustered mainly to the segments in repeats III and IV that are involved in gating, voltage-sensing, and particularly inactivation. A mutational hotspot involving the fast inactivation segments is identified and can be mechanistically interpreted by our "door wedge" model for fast inactivation. The structural analysis presented here, with a focus on the impact of mutations on inactivation and late sodium current, establishes a structure-function relationship for the mechanistic understanding of Na1.5 channelopathies. 履歴 登録 2021年1月4日 登録サイト : PDBJ / 処理サイト : PDBJ改定 1.0 2021年3月24日 Provider : repository / タイプ : Initial release改定 1.1 2024年11月6日 Group : Data collection / Database references / Structure summaryカテゴリ : chem_comp_atom / chem_comp_bond ... chem_comp_atom / chem_comp_bond / database_2 / em_admin / pdbx_entry_details / pdbx_modification_feature Item : _database_2.pdbx_DOI / _database_2.pdbx_database_accession ... _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _em_admin.last_update / _pdbx_entry_details.has_protein_modification
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