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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: 9ovt | ||||||||||||||||||||||||||||||
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| タイトル | Heteromeric GluA1/A2 in the inactive state, composite map of LBD-TMD | ||||||||||||||||||||||||||||||
要素 |
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キーワード | MEMBRANE PROTEIN / GluA1A2 heterotetramer ZK iGluR | ||||||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報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 / myosin V binding / neuron spine / proximal dendrite ...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 / myosin V binding / neuron spine / proximal dendrite / Trafficking of AMPA receptors / response to arsenic-containing substance / regulation of monoatomic ion transmembrane transport / cellular response to L-glutamate / cellular response to dsRNA / ligand-gated calcium channel activity / dendritic spine membrane / beta-2 adrenergic receptor binding / Synaptic adhesion-like molecules / long-term synaptic depression / cellular response to peptide hormone stimulus / spine synapse / dendritic spine neck / dendritic spine cytoplasm / cellular response to amine stimulus / dendritic spine head / peptide hormone receptor binding / response to psychosocial stress / response to morphine / Activation of AMPA receptors / spinal cord development / perisynaptic space / ligand-gated monoatomic cation channel activity / neuronal cell body membrane / protein kinase A binding / Trafficking of GluR2-containing AMPA receptors / response to lithium ion / AMPA glutamate receptor activity / AMPA glutamate receptor clustering / behavioral response to pain / kainate selective glutamate receptor activity / immunoglobulin binding / adenylate cyclase binding / asymmetric synapse / response to electrical stimulus / AMPA glutamate receptor complex / regulation of receptor recycling / extracellularly glutamate-gated ion channel activity / cellular response to glycine / ionotropic glutamate receptor complex / Unblocking of NMDA receptors, glutamate binding and activation / G-protein alpha-subunit binding / glutamate receptor binding / conditioned place preference / positive regulation of synaptic transmission / long-term memory / postsynaptic density, intracellular component / response to fungicide / regulation of synaptic transmission, glutamatergic / neuronal action potential / 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 / synapse assembly / 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 / dendritic shaft / synaptic membrane / SNARE binding / response to cocaine / PDZ domain binding / neuromuscular junction / synaptic transmission, glutamatergic / establishment of protein localization / cellular response to amino acid stimulus / protein tetramerization / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / response to nutrient levels / cerebral cortex development / regulation of synaptic plasticity / receptor internalization / recycling endosome / postsynaptic density membrane / response to peptide hormone / cellular response to growth factor stimulus / modulation of chemical synaptic transmission / Schaffer collateral - CA1 synapse / response to toxic substance / recycling endosome membrane / small GTPase 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: 3.43 Å | ||||||||||||||||||||||||||||||
データ登録者 | Yen, L.Y. / Sobolevsky, A.I. / Newton, T.P. / Gangwar, S.P. | ||||||||||||||||||||||||||||||
| 資金援助 | 米国, 9件
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引用 | ジャーナル: Nat Commun / 年: 2026タイトル: Auxiliary subunits reshape structural asymmetry and functional plasticity in heterotetrameric GluA1/A2 AMPA receptor core. 著者: Laura Y Yen / Thomas P Newton / Maria V Yelshanskaya / Muhammed Aktolun / Shanti Pal Gangwar / Rasmus P Clausen / Maria G Kurnikova / Alexander I Sobolevsky / ![]() 要旨: AMPA-subtype ionotropic glutamate receptors (AMPARs) mediate the fast component of excitatory neurotransmission. They govern synaptic plasticity that underlies learning and memory, while their ...AMPA-subtype ionotropic glutamate receptors (AMPARs) mediate the fast component of excitatory neurotransmission. They govern synaptic plasticity that underlies learning and memory, while their dysregulation is implicated in numerous neurological disorders. The functional diversity of AMPARs arises from variations in their subunit composition and also their association with auxiliary subunits. While multiple structures of homomeric AMPARs have been reported, structural information for the heteromeric core - particularly in the absence of auxiliary subunits, which would serve as a functional and structural baseline - has been limited. Here, we report cryo-electron microscopy structures of GluA1/A2, the most abundant AMPAR di-heteromer in the brain, in the closed, open, and desensitized states. Using molecular dynamics (MD) simulations and cross-correlating structural and functional information, we find that auxiliary subunits increase the diameter of channel pore, which corresponds to larger conductance. Likewise, we find that recovery from desensitization slows with greater disruption of two-fold rotational symmetry of the ligand-binding domain dimer in the desensitized state. Both receptor activation and desensitization vary with the type and number of associated auxiliary proteins. These structures offer a foundation for uncovering how auxiliary subunits reshape structural asymmetry and functional plasticity in heterotetrameric AMPARs. | ||||||||||||||||||||||||||||||
| 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 | 9ovt.cif.gz | 298.9 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9ovt.ent.gz | 237.8 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9ovt.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/ov/9ovt ftp://data.pdbj.org/pub/pdb/validation_reports/ov/9ovt | HTTPS FTP |
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-関連構造データ
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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: 48183.172 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() Homo sapiens (ヒト) / 組織 (発現宿主): kidney / 参照: UniProt: P19490#2: タンパク質 | 分子量: 47751.934 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() Homo sapiens (ヒト) / 組織 (発現宿主): kidney / 参照: UniProt: P19491#3: 化合物 | ChemComp-ZK1 / {[ #4: 化合物 | #5: 水 | ChemComp-HOH / | 研究の焦点であるリガンドがあるか | Y | Has 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: Heteromeric GluA1A2 with competitive antagonist ZK / タイプ: COMPLEX / Entity ID: #1-#2 / 由来: RECOMBINANT | |||||||||||||||||||||||||
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| 分子量 | 値: 0.556 MDa / 実験値: NO | |||||||||||||||||||||||||
| 由来(天然) | 生物種: ![]() | |||||||||||||||||||||||||
| 由来(組換発現) | 生物種: Homo sapiens (ヒト) / 株: HEK 293S GntI- / プラスミド: pEG BacMam | |||||||||||||||||||||||||
| 緩衝液 | pH: 8 詳細: 150 mM NaCl, 20 mM Tris-HCl pH 8.0, and 0.05% digitonin, 100 uM ZK-200775 | |||||||||||||||||||||||||
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| 試料 | 濃度: 4.5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: The sample had compositional heterogeneity, with broken particles seen throughout. Otherwise, sample was monodisperse | |||||||||||||||||||||||||
| 試料支持 | 詳細: 15 mA / グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: UltrAuFoil R1.2/1.3 | |||||||||||||||||||||||||
| 急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 298 K |
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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: SPOT SCAN |
| 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 / Cs: 2.7 mm / C2レンズ絞り径: 100 µm |
| 撮影 | 電子線照射量: 45.7 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
| EMソフトウェア |
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||
| 粒子像の選択 | 選択した粒子像数: 5527903 | ||||||||||||||||||||||||||||
| 対称性 | 点対称性: C2 (2回回転対称) | ||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.43 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 216104 詳細: this is a composite map; where required, consensus refinement parameters are entered 対称性のタイプ: POINT | ||||||||||||||||||||||||||||
| 精密化 | 立体化学のターゲット値: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS) | ||||||||||||||||||||||||||||
| 拘束条件 |
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万見について






米国, 9件
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PDBj





Homo sapiens (ヒト)



FIELD EMISSION GUN