登録情報 データベース : EMDB / ID : EMD-47520 ダウンロードとリンクタイトル GluA2-gamma2 complex bound to memantine, glutamate, and cyclothiazide マップデータFull map 詳細 試料複合体 : GluA2-TARPgamma2 Complex bound to memantine, glutamate, and cyclothiazideタンパク質・ペプチド : Voltage-dependent calcium channel gamma-2 subunitタンパク質・ペプチド : Isoform Flip of Glutamate receptor 2リガンド : Memantineリガンド : GLUTAMIC ACIDリガンド : CYCLOTHIAZIDE 詳細 キーワード ligand-gated ion channel / ionotropic glutamate receptor / ampa receptor / ion channel / TRANSPORT 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
Presynaptic depolarization and calcium channel opening / LGI-ADAM interactions / Trafficking of AMPA receptors / eye blink reflex / positive regulation of protein localization to basolateral plasma membrane / cerebellar mossy fiber / postsynaptic neurotransmitter receptor diffusion trapping / regulation of AMPA receptor activity / membrane hyperpolarization / nervous system process ... Presynaptic depolarization and calcium channel opening / LGI-ADAM interactions / Trafficking of AMPA receptors / eye blink reflex / positive regulation of protein localization to basolateral plasma membrane / cerebellar mossy fiber / postsynaptic neurotransmitter receptor diffusion trapping / regulation of AMPA receptor activity / membrane hyperpolarization / nervous system process / protein targeting to membrane / voltage-gated calcium channel complex / spine synapse / dendritic spine neck / dendritic spine head / cellular response to amine stimulus / neurotransmitter receptor localization to postsynaptic specialization membrane / neuromuscular junction development / perisynaptic space / Activation of AMPA receptors / ligand-gated monoatomic cation channel activity / AMPA glutamate receptor activity / transmission of nerve impulse / response to lithium ion / Trafficking of GluR2-containing AMPA receptors / kainate selective glutamate receptor activity / cellular response to glycine / AMPA glutamate receptor complex / extracellularly glutamate-gated ion channel activity / immunoglobulin binding / asymmetric synapse / ionotropic glutamate receptor complex / conditioned place preference / regulation of receptor recycling / membrane depolarization / glutamate receptor binding / Unblocking of NMDA receptors, glutamate binding and activation / positive regulation of synaptic transmission / regulation of postsynaptic membrane neurotransmitter receptor levels / regulation of synaptic transmission, glutamatergic / voltage-gated calcium channel activity / response to fungicide / cytoskeletal protein binding / glutamate-gated receptor activity / 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 / dendrite membrane / ionotropic glutamate receptor binding / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / ionotropic glutamate receptor signaling pathway / dendrite cytoplasm / synaptic membrane / hippocampal mossy fiber to CA3 synapse / dendritic shaft / SNARE binding / regulation of membrane potential / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / synaptic transmission, glutamatergic / protein tetramerization / PDZ domain binding / establishment of protein localization / response to calcium ion / postsynaptic density membrane / cerebral cortex development / modulation of chemical synaptic transmission / receptor internalization / Schaffer collateral - CA1 synapse / terminal bouton / synaptic vesicle / synaptic vesicle membrane / presynapse / signaling receptor activity / amyloid-beta binding / growth cone / presynaptic membrane / scaffold protein binding / perikaryon / chemical synaptic transmission / dendritic spine / postsynaptic membrane / neuron projection / postsynaptic density / axon / external side of plasma membrane / neuronal cell body / dendrite / synapse / protein kinase binding / protein-containing complex binding / glutamatergic synapse / cell surface / endoplasmic reticulum / protein-containing complex / identical protein binding / membrane / plasma membrane 類似検索 - 分子機能 Voltage-dependent calcium channel, gamma-2 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-2 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 Voltage-dependent calcium channel gamma-2 subunit / Glutamate receptor 2 類似検索 - 構成要素生物種 Rattus norvegicus (ドブネズミ) / Mus musculus (ハツカネズミ)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 4.3 Å 詳細 データ登録者Montano Romero A / Carrillo E / Jayaraman V / Twomey EC 資金援助 米国, 4件 詳細 詳細を隠すOrganization Grant number 国 National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) R35GM154904 米国 National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS) R35GM122528 米国 Other private Kinship Foundation 22098168 米国 Other private Diana Helis Henry Medical Research Foundation 142548 米国
引用ジャーナル : Nat Commun / 年 : 2025タイトル : Memantine inhibits calcium-permeable AMPA receptors.著者 : Elisa Carrillo / Alejandra Montaño Romero / Cuauhtemoc U Gonzalez / Andreea L Turcu / Santiago Vázquez / Edward C Twomey / Vasanthi Jayaraman / 要旨 : Memantine is an US Food and Drug Administration (FDA) approved drug that is thought to selectively inhibit NMDA-subtype of ionotropic glutamate receptors (NMDARs). NMDARs enable calcium influx into ... Memantine is an US Food and Drug Administration (FDA) approved drug that is thought to selectively inhibit NMDA-subtype of ionotropic glutamate receptors (NMDARs). NMDARs enable calcium influx into neurons and are critical for normal brain function. However, increasing evidence shows that calcium influx in neurological diseases is augmented by calcium-permeable AMPA-subtype ionotropic glutamate receptors (AMPARs). Here, we demonstrate that these calcium-permeable AMPARs (CP-AMPARs) are inhibited by memantine. Electrophysiology unveils that memantine inhibition of CP-AMPARs is dependent on their calcium permeability and the presence of their neuronal auxiliary subunit transmembrane AMPAR regulatory proteins (TARPs). Through cryo-electron microscopy we elucidate that memantine blocks CP-AMPAR ion channels in a unique mechanism of action from NMDARs. Furthermore, we demonstrate that memantine inhibits a gain of function AMPAR mutation found in a patient with a neurodevelopmental disorder. Our findings unlock potential exploitation of this site to design more specific drugs targeting CP-AMPARs. 履歴 登録 2024年10月25日 - ヘッダ(付随情報) 公開 2025年6月25日 - マップ公開 2025年6月25日 - 更新 2025年7月16日 - 現状 2025年7月16日 処理サイト : RCSB / 状態 : 公開
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