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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: 8p3q | ||||||||||||
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| タイトル | Homomeric GluA2 flip R/G-unedited Q/R-edited F231A mutant in tandem with TARP gamma-2, desensitized conformation 3 | ||||||||||||
要素 |
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キーワード | MEMBRANE PROTEIN / AMPAR / ion channels / neurotransmission | ||||||||||||
| 機能・相同性 | 機能・相同性情報Presynaptic depolarization and calcium channel opening / eye blink reflex / positive regulation of protein localization to basolateral plasma membrane / cerebellar mossy fiber / LGI-ADAM interactions / Trafficking of AMPA receptors / postsynaptic neurotransmitter receptor diffusion trapping / regulation of AMPA receptor activity / channel regulator activity / membrane hyperpolarization ...Presynaptic depolarization and calcium channel opening / eye blink reflex / positive regulation of protein localization to basolateral plasma membrane / cerebellar mossy fiber / LGI-ADAM interactions / Trafficking of AMPA receptors / 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 / dendritic spine head / cellular response to amine stimulus / Activation of AMPA receptors / neurotransmitter receptor localization to postsynaptic specialization membrane / ligand-gated monoatomic cation channel activity / perisynaptic space / neuromuscular junction development / Trafficking of GluR2-containing AMPA receptors / response to lithium ion / AMPA glutamate receptor activity / AMPA glutamate receptor clustering / transmission of nerve impulse / kainate selective glutamate receptor activity / immunoglobulin binding / asymmetric synapse / extracellularly glutamate-gated ion channel activity / AMPA glutamate receptor complex / cellular response to glycine / regulation of receptor recycling / membrane depolarization / ionotropic glutamate receptor complex / 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 / extracellular ligand-gated monoatomic ion channel activity / cytoskeletal protein binding / glutamate-gated receptor activity / regulation of long-term synaptic depression / cellular response to brain-derived neurotrophic factor stimulus / 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 / dendrite cytoplasm / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / positive regulation of excitatory postsynaptic potential / hippocampal mossy fiber to CA3 synapse / dendritic shaft / SNARE binding / synaptic membrane / PDZ domain binding / calcium channel regulator activity / synaptic transmission, glutamatergic / protein tetramerization / establishment of protein localization / 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 / growth cone / presynapse / 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 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: 2.95 Å | ||||||||||||
データ登録者 | Zhang, D. / Krieger, J.M. / Yamashita, K. / Greger, I. | ||||||||||||
| 資金援助 | 英国, European Union, 3件
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引用 | ジャーナル: Nature / 年: 2023タイトル: Structural mobility tunes signalling of the GluA1 AMPA glutamate receptor. 著者: Danyang Zhang / Josip Ivica / James M Krieger / Hinze Ho / Keitaro Yamashita / Imogen Stockwell / Rozbeh Baradaran / Ondrej Cais / Ingo H Greger / ![]() 要旨: AMPA glutamate receptors (AMPARs), the primary mediators of excitatory neurotransmission in the brain, are either GluA2 subunit-containing and thus Ca-impermeable, or GluA2-lacking and Ca-permeable. ...AMPA glutamate receptors (AMPARs), the primary mediators of excitatory neurotransmission in the brain, are either GluA2 subunit-containing and thus Ca-impermeable, or GluA2-lacking and Ca-permeable. Despite their prominent expression throughout interneurons and glia, their role in long-term potentiation and their involvement in a range of neuropathologies, structural information for GluA2-lacking receptors is currently absent. Here we determine and characterize cryo-electron microscopy structures of the GluA1 homotetramer, fully occupied with TARPγ3 auxiliary subunits (GluA1/γ3). The gating core of both resting and open-state GluA1/γ3 closely resembles GluA2-containing receptors. However, the sequence-diverse N-terminal domains (NTDs) give rise to a highly mobile assembly, enabling domain swapping and subunit re-alignments in the ligand-binding domain tier that are pronounced in desensitized states. These transitions underlie the unique kinetic properties of GluA1. A GluA2 mutant (F231A) increasing NTD dynamics phenocopies this behaviour, and exhibits reduced synaptic responses, reflecting the anchoring function of the AMPAR NTD at the synapse. Together, this work underscores how the subunit-diverse NTDs determine subunit arrangement, gating properties and ultimately synaptic signalling efficiency among AMPAR subtypes. | ||||||||||||
| 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 | 8p3q.cif.gz | 502 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb8p3q.ent.gz | 380.3 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 8p3q.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/p3/8p3q ftp://data.pdbj.org/pub/pdb/validation_reports/p3/8p3q | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 17392MC ![]() 8c1pC ![]() 8c1qC ![]() 8c1rC ![]() 8c1sC ![]() 8c2hC ![]() 8c2iC ![]() 8p3sC ![]() 8p3tC ![]() 8p3uC ![]() 8p3vC ![]() 8p3wC ![]() 8p3xC ![]() 8p3yC ![]() 8p3zC ![]() 8pivC 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
-タンパク質 , 2種, 8分子 ABCDEFGH
| #1: タンパク質 | 分子量: 98907.969 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: 35938.746 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: Q71RJ2 |
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-非ポリマー , 4種, 23分子 






| #3: 化合物 | ChemComp-PLM / #4: 化合物 | ChemComp-OLC / ( #5: 化合物 | ChemComp-POV / ( #6: 水 | ChemComp-HOH / | |
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-詳細
| 研究の焦点であるリガンドがあるか | Y |
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| Has protein modification | Y |
-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: Homomeric GluA1 AMPA receptor in complex with TARP gamma 3 and 1mM quisqualate タイプ: COMPLEX / Entity ID: #1-#2 / 由来: RECOMBINANT |
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| 由来(天然) | 生物種: ![]() |
| 由来(組換発現) | 生物種: Homo sapiens (ヒト) |
| 緩衝液 | pH: 8 |
| 試料 | 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): 2400 nm / 最小 デフォーカス(公称値): 1400 nm |
| 撮影 | 電子線照射量: 50 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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解析
| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| 3次元再構成 | 解像度: 2.95 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 62156 / 対称性のタイプ: POINT | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 精密化 | 解像度: 2.95→2.95 Å / Cor.coef. Fo:Fc: 0.844 / SU B: 18.379 / SU ML: 0.312 / ESU R: 0.42 立体化学のターゲット値: MAXIMUM LIKELIHOOD WITH PHASES 詳細: HYDROGENS HAVE BEEN USED IF PRESENT IN THE INPUT
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| 溶媒の処理 | 溶媒モデル: PARAMETERS FOR MASK CACLULATION | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 原子変位パラメータ | Biso mean: 139.746 Å2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 精密化ステップ | サイクル: 1 / 合計: 18047 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 拘束条件 |
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ムービー
コントローラー
万見について






英国, European Union, 3件
引用































PDBj













Homo sapiens (ヒト)
FIELD EMISSION GUN