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データを開く
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基本情報
| 登録情報 | データベース: PDB / ID: 9dhp | |||||||||||||||||||||||||||||||||
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| タイトル | Resting state 1 of the GluA2-gamma2 complex | |||||||||||||||||||||||||||||||||
要素 |
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キーワード | TRANSPORT PROTEIN / ligand-gated ion channel / ionotropic glutamate receptor / ampa receptor / ion channel | |||||||||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報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 / channel regulator activity / membrane hyperpolarization ...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 / channel regulator activity / membrane hyperpolarization / nervous system process / protein targeting to membrane / voltage-gated calcium channel complex / spine synapse / dendritic spine neck / dendritic spine cytoplasm / cellular response to amine stimulus / dendritic spine head / neurotransmitter receptor localization to postsynaptic specialization membrane / Activation of AMPA receptors / perisynaptic space / ligand-gated monoatomic cation channel activity / neuromuscular junction development / Trafficking of GluR2-containing AMPA receptors / response to lithium ion / AMPA glutamate receptor activity / transmission of nerve impulse / AMPA glutamate receptor clustering / kainate selective glutamate receptor activity / immunoglobulin binding / asymmetric synapse / AMPA glutamate receptor complex / regulation of receptor recycling / extracellularly glutamate-gated ion channel activity / cellular response to glycine / ionotropic glutamate receptor complex / membrane depolarization / Unblocking of NMDA receptors, glutamate binding and activation / glutamate receptor binding / conditioned place preference / positive regulation of synaptic transmission / regulation of postsynaptic membrane neurotransmitter receptor levels / voltage-gated calcium channel activity / response to fungicide / regulation of synaptic transmission, glutamatergic / positive regulation of synaptic transmission, glutamatergic / glutamate-gated receptor activity / extracellular ligand-gated monoatomic ion channel activity / cytoskeletal protein binding / cellular response to brain-derived neurotrophic factor stimulus / regulation of long-term synaptic depression / somatodendritic compartment / glutamate-gated calcium ion channel activity / presynaptic active zone membrane / excitatory synapse / ionotropic glutamate receptor signaling pathway / ionotropic glutamate receptor binding / dendrite membrane / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / dendrite cytoplasm / positive regulation of excitatory postsynaptic potential / hippocampal mossy fiber to CA3 synapse / dendritic shaft / synaptic membrane / SNARE binding / PDZ domain binding / synaptic transmission, glutamatergic / establishment of protein localization / protein tetramerization / regulation of membrane potential / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / cerebral cortex development / response to calcium ion / receptor internalization / postsynaptic density membrane / modulation of chemical synaptic transmission / Schaffer collateral - CA1 synapse / terminal bouton / synaptic vesicle / long-term synaptic potentiation / amyloid-beta binding / synaptic vesicle membrane / presynapse / growth cone / signaling receptor activity / presynaptic membrane / scaffold protein binding / dendritic spine / chemical synaptic transmission / perikaryon / postsynaptic membrane / neuron projection / postsynaptic density / external side of plasma membrane / axon / neuronal cell body / synapse / dendrite / protein kinase binding / protein-containing complex binding 類似検索 - 分子機能 | |||||||||||||||||||||||||||||||||
| 生物種 | ![]() ![]() | |||||||||||||||||||||||||||||||||
| 手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 4.18 Å | |||||||||||||||||||||||||||||||||
データ登録者 | Kumar Mondal, A. / Carrillo, E. / Jayaraman, V. / Twomey, E.C. | |||||||||||||||||||||||||||||||||
| 資金援助 | 米国, 4件
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引用 | ジャーナル: Nature / 年: 2025タイトル: Glutamate gating of AMPA-subtype iGluRs at physiological temperatures. 著者: Anish Kumar Mondal / Elisa Carrillo / Vasanthi Jayaraman / Edward C Twomey / ![]() 要旨: Ionotropic glutamate receptors (iGluRs) are tetrameric ligand-gated ion channels that mediate most excitatory neurotransmission. iGluRs are gated by glutamate, where on glutamate binding, they open ...Ionotropic glutamate receptors (iGluRs) are tetrameric ligand-gated ion channels that mediate most excitatory neurotransmission. iGluRs are gated by glutamate, where on glutamate binding, they open their ion channels to enable cation influx into postsynaptic neurons, initiating signal transduction. The structural mechanics of how glutamate gating occurs in full-length iGluRs is not well understood. Here, using the α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid subtype iGluR (AMPAR), we identify the glutamate-gating mechanism. AMPAR activation by glutamate is augmented at physiological temperatures. By preparing AMPARs for cryogenic-electron microscopy at these temperatures, we captured the glutamate-gating mechanism. Activation by glutamate initiates ion channel opening that involves all ion channel helices hinging away from the pore axis in a motif that is conserved across all iGluRs. Desensitization occurs when the local dimer pairs decouple and enables closure of the ion channel below through restoring the channel hinges and refolding the channel gate. Our findings define how glutamate gates iGluRs, provide foundations for therapeutic design and demonstrate how physiological temperatures can alter iGluR function. | |||||||||||||||||||||||||||||||||
| 履歴 |
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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ダウンロードとリンク
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ダウンロード
| PDBx/mmCIF形式 | 9dhp.cif.gz | 397.2 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9dhp.ent.gz | 327.6 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9dhp.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
| その他 | その他のダウンロード |
-検証レポート
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/dh/9dhp ftp://data.pdbj.org/pub/pdb/validation_reports/dh/9dhp | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 46872MC ![]() 9dhqC ![]() 9dhrC ![]() 9dhsC ![]() 9dhtC ![]() 9mrkC ![]() 9mrlC ![]() 9mrmC ![]() 9mrnC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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| 類似構造データ | 類似検索 - 機能・相同性 F&H 検索 |
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リンク
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集合体
| 登録構造単位 | ![]()
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要素
| #1: タンパク質 | 分子量: 47938.141 Da / 分子数: 4 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() Homo sapiens (ヒト) / 参照: UniProt: P19491#2: タンパク質 | 分子量: 22633.041 Da / 分子数: 4 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() Homo sapiens (ヒト) / 参照: UniProt: O88602Has protein modification | Y | |
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-実験情報
-実験
| 実験 | 手法: 電子顕微鏡法 |
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| EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
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試料調製
| 構成要素 | 名称: GluA2-TARPgamma2 Complex / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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| 分子量 | 実験値: NO |
| 由来(天然) | 生物種: ![]() |
| 由来(組換発現) | 生物種: Homo sapiens (ヒト) / 細胞: Expi293 Gnti- |
| 緩衝液 | pH: 8 |
| 試料 | 濃度: 4 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
| 急速凍結 | 凍結剤: ETHANE |
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電子顕微鏡撮影
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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| 顕微鏡 | モデル: TFS KRIOS |
| 電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
| 電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2500 nm / 最小 デフォーカス(公称値): 1000 nm |
| 撮影 | 電子線照射量: 40 e/Å2 フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) |
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解析
| EMソフトウェア | 名称: PHENIX / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 4.18 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 74785 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 拘束条件 |
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万見について






米国, 4件
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PDBj





Homo sapiens (ヒト)
FIELD EMISSION GUN