登録情報 データベース : EMDB / ID : EMD-13974 構造の表示 ダウンロードとリンクタイトル Desensitized state of GluA1/2 AMPA receptor in complex with TARP-gamma 8 (LBD) マップデータPostprocessed map obtained after focused refinement of the LBD region of the complex GluA1/2/TARP8 in desensitised state 詳細 試料複合体 : Complex between GluA1/2 AMPA receptor and auxiliary subunit TARP gamma8タンパク質・ペプチド : GluA1 AMPA glutamate receptor 1, Flip isoformタンパク質・ペプチド : AMPA Glutamate Receptor 2, flip isoform, Q/R editedタンパク質・ペプチド : TARP-gamma 8 詳細 キーワード glutamate / AMPA receptor / TARPs / MEMBRANE PROTEIN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
Phase 0 - rapid depolarisation / Phase 2 - plateau phase / Cargo concentration in the ER / axonal spine / positive regulation of locomotion involved in locomotory behavior / positive regulation of membrane potential / COPII-mediated vesicle transport / cellular response to ammonium ion / response to sucrose / L-type voltage-gated calcium channel complex ... Phase 0 - rapid depolarisation / Phase 2 - plateau phase / Cargo concentration in the ER / axonal spine / positive regulation of locomotion involved in locomotory behavior / positive regulation of membrane potential / COPII-mediated vesicle transport / cellular response to ammonium ion / response to sucrose / L-type voltage-gated calcium channel complex / postsynaptic neurotransmitter receptor diffusion trapping / neuron spine / myosin V binding / Trafficking of AMPA receptors / channel regulator activity / regulation of AMPA receptor activity / LGI-ADAM interactions / proximal dendrite / regulation of monoatomic ion transmembrane transport / protein phosphatase 2B binding / response to arsenic-containing substance / cellular response to dsRNA / cellular response to L-glutamate / dendritic spine membrane / long-term synaptic depression / Synaptic adhesion-like molecules / beta-2 adrenergic receptor binding / cellular response to peptide hormone stimulus / response to morphine / neuronal cell body membrane / spine synapse / dendritic spine neck / protein kinase A binding / dendritic spine head / peptide hormone receptor binding / cellular response to amine stimulus / response to psychosocial stress / spinal cord development / Activation of AMPA receptors / perisynaptic space / ligand-gated monoatomic cation channel activity / AMPA glutamate receptor activity / transmission of nerve impulse / Trafficking of GluR2-containing AMPA receptors / response to lithium ion / behavioral response to pain / kainate selective glutamate receptor activity / AMPA glutamate receptor complex / cellular response to glycine / extracellularly glutamate-gated ion channel activity / adenylate cyclase binding / ionotropic glutamate receptor complex / immunoglobulin binding / asymmetric synapse / conditioned place preference / excitatory synapse / response to electrical stimulus / regulation of receptor recycling / G-protein alpha-subunit binding / positive regulation of excitatory postsynaptic potential / glutamate receptor binding / Unblocking of NMDA receptors, glutamate binding and activation / long-term memory / positive regulation of synaptic transmission / positive regulation of synaptic transmission, glutamatergic / postsynaptic density, intracellular component / regulation of postsynaptic membrane neurotransmitter receptor levels / neuronal action potential / voltage-gated calcium channel activity / regulation of synaptic transmission, glutamatergic / response to fungicide / glutamate-gated receptor activity / cytoskeletal protein binding / synapse assembly / regulation of long-term synaptic depression / extracellular ligand-gated monoatomic ion channel activity / cellular response to brain-derived neurotrophic factor stimulus / glutamate-gated calcium ion channel activity / presynaptic active zone membrane / somatodendritic compartment / ionotropic glutamate receptor binding / dendrite membrane / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / dendrite cytoplasm / ionotropic glutamate receptor signaling pathway / synaptic membrane / SNARE binding / dendritic shaft / calcium channel regulator activity / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / response to cocaine / synaptic transmission, glutamatergic / PDZ domain binding / protein tetramerization / cellular response to amino acid stimulus / neuromuscular junction / response to nutrient levels / establishment of protein localization / response to peptide hormone / postsynaptic density membrane 類似検索 - 分子機能 Voltage-dependent calcium channel, gamma-8 subunit / : / PMP-22/EMP/MP20/Claudin family / Voltage-dependent calcium channel, gamma subunit / PMP-22/EMP/MP20/Claudin superfamily / Ionotropic glutamate receptor, metazoa / Ligated ion channel L-glutamate- and glycine-binding site / Ionotropic glutamate receptor, L-glutamate and glycine-binding domain / Ligated ion channel L-glutamate- and glycine-binding site / Ligand-gated ion channel ... Voltage-dependent calcium channel, gamma-8 subunit / : / PMP-22/EMP/MP20/Claudin family / Voltage-dependent calcium channel, gamma subunit / PMP-22/EMP/MP20/Claudin superfamily / Ionotropic glutamate receptor, metazoa / Ligated ion channel L-glutamate- and glycine-binding site / Ionotropic glutamate receptor, L-glutamate and glycine-binding domain / Ligated ion channel L-glutamate- and glycine-binding site / Ligand-gated ion channel / : / Ionotropic glutamate receptor / Eukaryotic homologues of bacterial periplasmic substrate binding proteins. / Receptor, ligand binding region / Receptor family ligand binding region / Periplasmic binding protein-like I 類似検索 - ドメイン・相同性 Glutamate receptor 1 / Glutamate receptor 2 / Voltage-dependent calcium channel gamma-8 subunit 類似検索 - 構成要素生物種 Rattus norvegicus (ドブネズミ)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 4.78 Å 詳細 データ登録者Herguedas B / Kohegyi B / Dohrke JN / Watson JF / Zhang D / Ho H / Shaikh SH / Lape R / Krieger JM / Greger IH 資金援助 英国, 3件 詳細 詳細を隠すOrganization Grant number 国 Medical Research Council (MRC, United Kingdom) MC_U105174197 英国 Biotechnology and Biological Sciences Research Council (BBSRC) BB/N002113/1 英国 Spanish Ministry of Science, Innovation, and Universities PID2019-106284GA-I00 英国
引用ジャーナル : Nat Commun / 年 : 2022タイトル : Mechanisms underlying TARP modulation of the GluA1/2-γ8 AMPA receptor.著者 : Beatriz Herguedas / Bianka K Kohegyi / Jan-Niklas Dohrke / Jake F Watson / Danyang Zhang / Hinze Ho / Saher A Shaikh / Remigijus Lape / James M Krieger / Ingo H Greger / 要旨 : AMPA-type glutamate receptors (AMPARs) mediate rapid signal transmission at excitatory synapses in the brain. Glutamate binding to the receptor's ligand-binding domains (LBDs) leads to ion channel ... AMPA-type glutamate receptors (AMPARs) mediate rapid signal transmission at excitatory synapses in the brain. Glutamate binding to the receptor's ligand-binding domains (LBDs) leads to ion channel activation and desensitization. Gating kinetics shape synaptic transmission and are strongly modulated by transmembrane AMPAR regulatory proteins (TARPs) through currently incompletely resolved mechanisms. Here, electron cryo-microscopy structures of the GluA1/2 TARP-γ8 complex, in both open and desensitized states (at 3.5 Å), reveal state-selective engagement of the LBDs by the large TARP-γ8 loop ('β1'), elucidating how this TARP stabilizes specific gating states. We further show how TARPs alter channel rectification, by interacting with the pore helix of the selectivity filter. Lastly, we reveal that the Q/R-editing site couples the channel constriction at the filter entrance to the gate, and forms the major cation binding site in the conduction path. Our results provide a mechanistic framework of how TARPs modulate AMPAR gating and conductance. 履歴 登録 2021年12月12日 - ヘッダ(付随情報) 公開 2022年2月23日 - マップ公開 2022年2月23日 - 更新 2023年12月13日 - 現状 2023年12月13日 処理サイト : PDBe / 状態 : 公開
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