登録情報 データベース : EMDB / ID : EMD-20294 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 3-13 deletion mutant bound to calmodulin (conformation 2) マップデータSharpened map for Eag1 3-13/CaM conformation 2 詳細 試料複合体 : Voltage-gated potassium channel Eag1 3-13 deletion mutant bound to calmodulin複合体 : Voltage-gated potassium channel Eag1 3-13 deletion mutantタンパク質・ペプチド : Potassium voltage-gated channel subfamily H member 1複合体 : calmodulin 詳細 キーワード Voltage-gated potassium channel / ion channel / calmodulin / TRANSPORT PROTEIN-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 / voltage-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / delayed rectifier potassium channel activity / nuclear inner membrane / CaM pathway / Cam-PDE 1 activation / Sodium/Calcium exchangers / Calmodulin induced events ... Voltage gated Potassium channels / potassium channel complex / regulation of presynaptic cytosolic calcium ion concentration / voltage-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / delayed rectifier potassium channel activity / nuclear inner membrane / CaM pathway / Cam-PDE 1 activation / Sodium/Calcium exchangers / Calmodulin induced events / Reduction of cytosolic Ca++ levels / 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 / negative regulation of high voltage-gated calcium channel activity / Glycogen breakdown (glycogenolysis) / CLEC7A (Dectin-1) induces NFAT activation / Activation of RAC1 downstream of NMDARs / phosphatidylinositol bisphosphate binding / negative regulation of ryanodine-sensitive calcium-release channel activity / organelle localization by membrane tethering / 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 / Synthesis of IP3 and IP4 in the cytosol / regulation of cell communication by electrical coupling involved in cardiac conduction / startle response / Phase 0 - rapid depolarisation / regulation of synaptic vesicle exocytosis / calcineurin-mediated signaling / Negative regulation of NMDA receptor-mediated neuronal transmission / Unblocking of NMDA receptors, glutamate binding and activation / RHO GTPases activate PAKs / Ion transport by P-type ATPases / Uptake and function of anthrax toxins / regulation of ryanodine-sensitive calcium-release channel activity / Long-term potentiation / protein phosphatase activator activity / Calcineurin activates NFAT / Regulation of MECP2 expression and activity / DARPP-32 events / catalytic complex / axolemma / Smooth Muscle Contraction / detection of calcium ion / regulation of cardiac muscle contraction / RHO GTPases activate IQGAPs / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / cellular response to interferon-beta / Protein methylation / calcium channel inhibitor activity / Activation of AMPK downstream of NMDARs / presynaptic cytosol / Ion homeostasis / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / eNOS activation / titin binding / Tetrahydrobiopterin (BH4) synthesis, recycling, salvage and regulation / sperm midpiece / regulation of calcium-mediated signaling / 14-3-3 protein binding / voltage-gated potassium channel complex / potassium ion transmembrane transport / calcium channel complex / substantia nigra development / FCERI mediated Ca+2 mobilization / Ras activation upon Ca2+ influx through NMDA receptor / regulation of heart rate / FCGR3A-mediated IL10 synthesis / cellular response to calcium ion / calyx of Held / Antigen activates B Cell Receptor (BCR) leading to generation of second messengers / adenylate cyclase activator activity / sarcomere / regulation of cytokinesis / VEGFR2 mediated cell proliferation / protein serine/threonine kinase activator activity / VEGFR2 mediated vascular permeability / regulation of membrane potential / spindle microtubule / Translocation of SLC2A4 (GLUT4) to the plasma membrane / calcium channel regulator activity / positive regulation of receptor signaling pathway via JAK-STAT / Stimuli-sensing channels / RAF activation / Transcriptional activation of mitochondrial biogenesis / response to calcium ion / postsynaptic density membrane / potassium ion transport / RAS processing / cellular response to type II interferon / G2/M transition of mitotic cell cycle / long-term synaptic potentiation / spindle pole 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 / 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 : 4.0 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 : Elife / 年 : 2019タイトル : Regulation of Eag1 gating by its intracellular domains.著者 : Jonathan R Whicher / Roderick MacKinnon / 要旨 : Voltage-gated potassium channels (Ks) are gated by transmembrane voltage sensors (VS) that move in response to changes in membrane voltage. K10.1 or Eag1 also has three intracellular domains: PAS, C- ... Voltage-gated potassium channels (Ks) are gated by transmembrane voltage sensors (VS) that move in response to changes in membrane voltage. K10.1 or Eag1 also has three intracellular domains: PAS, C-linker, and CNBHD. We demonstrate that the Eag1 intracellular domains are not required for voltage-dependent gating but likely interact with the VS to modulate gating. We identified specific interactions between the PAS, CNBHD, and VS that modulate voltage-dependent gating and provide evidence that VS movement destabilizes these interactions to promote channel opening. Additionally, mutation of these interactions renders Eag1 insensitive to calmodulin inhibition. The structure of the calmodulin insensitive mutant in a pre-open conformation suggests that channel opening may occur through a rotation of the intracellular domains and calmodulin may prevent this rotation by stabilizing interactions between the VS and intracellular domains. Intracellular domains likely play a similar modulatory role in voltage-dependent gating of the related K11-12 channels. 履歴 登録 2019年6月14日 - ヘッダ(付随情報) 公開 2019年9月18日 - マップ公開 2019年9月18日 - 更新 2024年3月20日 - 現状 2024年3月20日 処理サイト : RCSB / 状態 : 公開
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