登録情報 データベース : EMDB / ID : EMD-8215 構造の表示 ダウンロードとリンクタイトル Single particle cryo-EM structure of the voltage-gated K+ channel Eag1 bound to the channel inhibitor calmodulin マップデータVoltage-gated K+ channel Eag1 bound to the channel inhibitor calmodulin 詳細 試料細胞器官・細胞要素 : Voltage-gated K+ channel Eag1 bound to the channel inhibitor calmodulin細胞器官・細胞要素 : Voltage-gated potassium channel Eag1タンパク質・ペプチド : Potassium voltage-gated channel subfamily H member 1細胞器官・細胞要素 : Calmodulinリガンド : 2-acetamido-2-deoxy-beta-D-glucopyranoseリガンド : CHOLESTEROL HEMISUCCINATE 詳細 キーワード Voltage-gated potassium channel / calmodulin / Cryoelectron microscopy / Eag1 / METAL TRANSPORT-CALCIUM BINDING PROTEIN complex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 Potassium channels / potassium channel complex / : / : / : / : / : / regulation of presynaptic cytosolic calcium ion concentration / positive regulation of protein autophosphorylation / negative regulation of peptidyl-threonine phosphorylation ... Voltage gated Potassium channels / potassium channel complex / : / : / : / : / : / regulation of presynaptic cytosolic calcium ion concentration / positive regulation of protein autophosphorylation / negative regulation of peptidyl-threonine phosphorylation / voltage-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / delayed rectifier potassium channel activity / establishment of protein localization to mitochondrial membrane / type 3 metabotropic glutamate receptor binding / nuclear inner membrane / CaM pathway / positive regulation of peptidyl-threonine phosphorylation / Cam-PDE 1 activation / Sodium/Calcium exchangers / Calmodulin induced events / Reduction of cytosolic Ca++ levels / positive regulation of DNA binding / Activation of Ca-permeable Kainate Receptor / CREB1 phosphorylation through the activation of CaMKII/CaMKK/CaMKIV cascasde / Loss of phosphorylation of MECP2 at T308 / CREB1 phosphorylation through the activation of Adenylate Cyclase / CaMK IV-mediated phosphorylation of CREB / PKA activation / response to corticosterone / negative regulation of high voltage-gated calcium channel activity / Glycogen breakdown (glycogenolysis) / CLEC7A (Dectin-1) induces NFAT activation / Activation of RAC1 downstream of NMDARs / negative regulation of ryanodine-sensitive calcium-release channel activity / organelle localization by membrane tethering / phosphatidylinositol bisphosphate binding / mitochondrion-endoplasmic reticulum membrane tethering / autophagosome membrane docking / negative regulation of calcium ion export across plasma membrane / regulation of cardiac muscle cell action potential / parallel fiber to Purkinje cell synapse / presynaptic endocytosis / nitric-oxide synthase binding / Synthesis of IP3 and IP4 in the cytosol / startle response / regulation of cell communication by electrical coupling involved in cardiac conduction / regulation of synaptic vesicle exocytosis / Phase 0 - rapid depolarisation / Negative regulation of NMDA receptor-mediated neuronal transmission / calcineurin-mediated signaling / Unblocking of NMDA receptors, glutamate binding and activation / RHO GTPases activate PAKs / Ion transport by P-type ATPases / Uptake and function of anthrax toxins / adenylate cyclase binding / regulation of ryanodine-sensitive calcium-release channel activity / Long-term potentiation / protein phosphatase activator activity / Calcineurin activates NFAT / Regulation of MECP2 expression and activity / positive regulation of protein serine/threonine kinase activity / DARPP-32 events / axolemma / catalytic complex / Smooth Muscle Contraction / detection of calcium ion / regulation of synaptic vesicle endocytosis / regulation of cardiac muscle contraction / RHO GTPases activate IQGAPs / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / activation of adenylate cyclase activity / cellular response to interferon-beta / Protein methylation / phosphatidylinositol 3-kinase binding / calcium channel inhibitor activity / Activation of AMPK downstream of NMDARs / presynaptic cytosol / positive regulation of nitric-oxide synthase activity / Ion homeostasis / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / enzyme regulator activity / eNOS activation / titin binding / Tetrahydrobiopterin (BH4) synthesis, recycling, salvage and regulation / sperm midpiece / 14-3-3 protein binding / regulation of calcium-mediated signaling / voltage-gated potassium channel complex / potassium ion transmembrane transport / calcium channel complex / FCERI mediated Ca+2 mobilization / substantia nigra development / Ras activation upon Ca2+ influx through NMDA receptor / FCGR3A-mediated IL10 synthesis / regulation of heart rate / cellular response to calcium ion / Antigen activates B Cell Receptor (BCR) leading to generation of second messengers / calyx of Held / response to amphetamine / adenylate cyclase activator activity 類似検索 - 分子機能 Potassium channel, voltage-dependent, EAG / : / Potassium channel, voltage-dependent, EAG/ELK/ERG / PAS domain / PAS-associated, C-terminal / PAC domain profile. / PAC motif / Motif C-terminal to PAS motifs (likely to contribute to PAS structural domain) / Cyclic nucleotide-monophosphate binding domain / Cyclic nucleotide-binding domain ... Potassium channel, voltage-dependent, EAG / : / Potassium channel, voltage-dependent, EAG/ELK/ERG / PAS domain / PAS-associated, C-terminal / PAC domain profile. / PAC motif / Motif C-terminal to PAS motifs (likely to contribute to PAS structural domain) / Cyclic nucleotide-monophosphate binding domain / Cyclic nucleotide-binding domain / cAMP/cGMP binding motif profile. / Cyclic nucleotide-binding domain / Cyclic nucleotide-binding domain superfamily / : / PAS repeat profile. / PAS domain / RmlC-like jelly roll fold / PAS domain superfamily / EF-hand domain pair / EF-hand, calcium binding motif / EF-Hand 1, calcium-binding site / EF-hand calcium-binding domain. / EF-hand calcium-binding domain profile. / EF-hand domain / Ion transport domain / Ion transport protein / EF-hand domain pair 類似検索 - ドメイン・相同性 Calmodulin-1 / Calmodulin-3 / Voltage-gated delayed rectifier potassium channel KCNH1 類似検索 - 構成要素生物種 Rattus norvegicus (ドブネズミ) / Homo sapiens (ヒト)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.78 Å 詳細 データ登録者Whicher JR / MacKinnon R 資金援助 米国, 3件 詳細 詳細を隠すOrganization Grant number 国 National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) GM43949 米国 Howard Hughes Medical Institute (HHMI) 米国 Damon Runyon Cancer Research Foundation DRG-2212-15 米国
引用ジャーナル : Science / 年 : 2016タイトル : Structure of the voltage-gated K⁺ channel Eag1 reveals an alternative voltage sensing mechanism.著者 : Jonathan R Whicher / Roderick MacKinnon / 要旨 : Voltage-gated potassium (K(v)) channels are gated by the movement of the transmembrane voltage sensor, which is coupled, through the helical S4-S5 linker, to the potassium pore. We determined the ... Voltage-gated potassium (K(v)) channels are gated by the movement of the transmembrane voltage sensor, which is coupled, through the helical S4-S5 linker, to the potassium pore. We determined the single-particle cryo-electron microscopy structure of mammalian K(v)10.1, or Eag1, bound to the channel inhibitor calmodulin, at 3.78 angstrom resolution. Unlike previous K(v) structures, the S4-S5 linker of Eag1 is a five-residue loop and the transmembrane segments are not domain swapped, which suggest an alternative mechanism of voltage-dependent gating. Additionally, the structure and position of the S4-S5 linker allow calmodulin to bind to the intracellular domains and to close the potassium pore, independent of voltage-sensor position. The structure reveals an alternative gating mechanism for K(v) channels and provides a template to further understand the gating properties of Eag1 and related channels. 履歴 登録 2016年6月16日 - ヘッダ(付随情報) 公開 2016年8月17日 - マップ公開 2016年8月17日 - 更新 2024年10月23日 - 現状 2024年10月23日 処理サイト : RCSB / 状態 : 公開
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