登録情報 データベース : EMDB / ID : EMD-9780 構造の表示 ダウンロードとリンクタイトル Molecular basis for pore blockade of human Sodium channel Nav1.2 by mu-conotoxin KIIIA マップデータThe map after postprocessing in RELION2.1. 詳細 試料複合体 : Nav1.2-beta2-KIIIA複合体 : Nav1.2-beta2複合体 : KIIIAタンパク質・ペプチド : Human Voltage gated sodium channel sub-type 1.2タンパク質・ペプチド : Sodium channel protein type 2 subunit alphaタンパク質・ペプチド : Mu-conotoxin KIIIA 詳細機能・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
response to pyrethroid / 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 / intrinsic apoptotic signaling pathway in response to osmotic stress / nerve development / cardiac conduction / regulation of atrial cardiac muscle cell membrane depolarization / paranode region of axon / membrane depolarization during cardiac muscle cell action potential / membrane depolarization during action potential ... response to pyrethroid / 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 / intrinsic apoptotic signaling pathway in response to osmotic stress / nerve development / cardiac conduction / regulation of atrial cardiac muscle cell membrane depolarization / paranode region of axon / membrane depolarization during cardiac muscle cell action potential / membrane depolarization during action potential / positive regulation of sodium ion transport / dentate gyrus development / axon initial segment / cardiac muscle cell action potential involved in contraction / node of Ranvier / voltage-gated sodium channel complex / Interaction between L1 and Ankyrins / voltage-gated sodium channel activity / sodium ion transport / Phase 0 - rapid depolarisation / regulation of heart rate by cardiac conduction / intercalated disc / sodium channel regulator activity / neuronal action potential / cardiac muscle contraction / T-tubule / myelination / sodium ion transmembrane transport / determination of adult lifespan / memory / Sensory perception of sweet, bitter, and umami (glutamate) taste / nervous system development / presynaptic membrane / response to heat / toxin activity / neuron apoptotic process / gene expression / chemical synaptic transmission / cellular response to hypoxia / calmodulin binding / axon / synapse / glutamatergic synapse / extracellular region / membrane / plasma membrane 類似検索 - 分子機能 Myelin P0 protein-related / 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 / Short calmodulin-binding motif containing conserved Ile and Gln residues. ... Myelin P0 protein-related / 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 / Short calmodulin-binding motif containing conserved Ile and Gln residues. / IQ motif, EF-hand binding site / IQ motif profile. / Voltage-dependent channel domain superfamily / Immunoglobulin V-set domain / Immunoglobulin V-set domain / Ion transport domain / Ion transport protein / Immunoglobulin subtype / Immunoglobulin / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like domain superfamily / Immunoglobulin-like fold 類似検索 - ドメイン・相同性 Sodium channel regulatory subunit beta-2 / Mu-conotoxin KIIIB / Sodium channel protein type 2 subunit alpha 類似検索 - 構成要素生物種 Homo sapiens (ヒト) / Conus kinoshitai (キノシタイモ)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.0 Å 詳細 データ登録者Pan X / Li Z / Huang X / Huang G / Shen H / Lei J / Yan N 引用ジャーナル : Science / 年 : 2019タイトル : Molecular basis for pore blockade of human Na channel Na1.2 by the μ-conotoxin KIIIA.著者 : Xiaojing Pan / Zhangqiang Li / Xiaoshuang Huang / Gaoxingyu Huang / Shuai Gao / Huaizong Shen / Lei Liu / Jianlin Lei / Nieng Yan / 要旨 : The voltage-gated sodium channel Na1.2 is responsible for the initiation and propagation of action potentials in the central nervous system. We report the cryo-electron microscopy structure of human ... The voltage-gated sodium channel Na1.2 is responsible for the initiation and propagation of action potentials in the central nervous system. We report the cryo-electron microscopy structure of human Na1.2 bound to a peptidic pore blocker, the μ-conotoxin KIIIA, in the presence of an auxiliary subunit, β2, to an overall resolution of 3.0 angstroms. The immunoglobulin domain of β2 interacts with the shoulder of the pore domain through a disulfide bond. The 16-residue KIIIA interacts with the extracellular segments in repeats I to III, placing Lys at the entrance to the selectivity filter. Many interacting residues are specific to Na1.2, revealing a molecular basis for KIIIA specificity. The structure establishes a framework for the rational design of subtype-specific blockers for Na channels. 履歴 登録 2019年1月18日 - ヘッダ(付随情報) 公開 2019年2月27日 - マップ公開 2019年2月27日 - 更新 2019年4月10日 - 現状 2019年4月10日 処理サイト : PDBj / 状態 : 公開
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