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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: 9x58 | |||||||||||||||||||||
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| タイトル | The GluA4-ATD in Complex with the 1D8-Fab | |||||||||||||||||||||
要素 |
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キーワード | MEMBRANE PROTEIN / AMPA receptor / native / GluA1 / GluA4 / LBD / TMD / CNIH3 / active state / 1D8 | |||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報Activation of AMPA receptors / Synaptic adhesion-like molecules / Unblocking of NMDA receptors, glutamate binding and activation / Trafficking of GluR2-containing AMPA receptors / Trafficking of AMPA receptors / kainate selective glutamate receptor complex / AMPA glutamate receptor activity / negative regulation of smooth muscle cell apoptotic process / AMPA glutamate receptor complex / positive regulation of synaptic transmission, glutamatergic ...Activation of AMPA receptors / Synaptic adhesion-like molecules / Unblocking of NMDA receptors, glutamate binding and activation / Trafficking of GluR2-containing AMPA receptors / Trafficking of AMPA receptors / kainate selective glutamate receptor complex / AMPA glutamate receptor activity / negative regulation of smooth muscle cell apoptotic process / AMPA glutamate receptor complex / positive regulation of synaptic transmission, glutamatergic / glutamate-gated receptor activity / presynaptic active zone membrane / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / synaptic transmission, glutamatergic / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / postsynaptic density membrane / modulation of chemical synaptic transmission / terminal bouton / dendritic spine / chemical synaptic transmission / postsynaptic density / neuronal cell body / synapse / dendrite / glutamatergic synapse / identical protein binding / plasma membrane 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: 3.2 Å | |||||||||||||||||||||
データ登録者 | Li, X. / Li, R. / Wei, Y. / Zhao, Y. | |||||||||||||||||||||
| 資金援助 | 中国, 1件
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引用 | ジャーナル: Cell Res / 年: 2026タイトル: Assembly and gating mechanism of native AMPA receptors from the cerebellum. 著者: Xiaojing Li / Renjie Li / Yiqing Wei / Jiexin Chen / Jiaojiao Zhao / Jun Zhao / Wei Wang / Na Li / Lili Wang / Tuo Hu / Yanli Dong / Yongping Zhu / Chao Wei / Long Li / Wei Zhang / Zhuo Huang / Yan Zhao / ![]() 要旨: AMPA receptors (AMPARs) mediate the majority of fast excitatory synaptic transmission throughout the central nervous system. Calcium-permeable AMPARs and GluA4-containing receptors are critical for ...AMPA receptors (AMPARs) mediate the majority of fast excitatory synaptic transmission throughout the central nervous system. Calcium-permeable AMPARs and GluA4-containing receptors are critical for cerebellar functions, such as motor learning, associative memory, auditory processing, and synaptic plasticity. In contrast to the well-characterized, predominantly GluA2-containing AMPARs of the hippocampus and cortex, cerebellar AMPARs contain a higher proportion of GluA4 and remain poorly understood. Here, we generated a highly GluA4-specific antibody. Using this antibody in combination with antibodies specifically recognizing GluA1 and GluA2, we purified native AMPARs and determined the subunit compositions of both calcium-impermeable and calcium-permeable native AMPARs in the cerebellum. The isolated cerebellar AMPARs that contained both GluA1 and GluA4 were calcium-permeable, with GluA4 occupying mainly the B/D positions, GluA1 occupying the A/C positions, and the complex associated primarily with cornichon 3 (CNIH3). We determined the structures of the complex in distinct functional states, including the resting, active, and desensitized states, and characterized the conformational transitions that underlie its activity. During desensitization, the receptor adopts a pseudo-4-fold configuration of the ligand-binding domain layer, which may be important for its functional properties. This study provides a blueprint for the subunit compositions of AMPARs in the cerebellum and clarifies the gating mechanism of the calcium-permeable native AMPAR-CNIH3 complex, providing significant insight into AMPAR-mediated synaptic transmission in the cerebellum. | |||||||||||||||||||||
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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 | 9x58.cif.gz | 256.2 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9x58.ent.gz | 206.4 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9x58.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/x5/9x58 ftp://data.pdbj.org/pub/pdb/validation_reports/x5/9x58 | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 66577MC ![]() 9j92C ![]() 9j93C ![]() 9j94C ![]() 9j95C ![]() 9x57C ![]() 9xjlC ![]() 9xjmC 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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| 1 |
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要素
| #1: タンパク質 | 分子量: 43388.133 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() Homo sapiens (ヒト) / 参照: UniProt: Q9Z2W8#2: 抗体 | 分子量: 18400.619 Da / 分子数: 2 / 由来タイプ: 天然 / 由来: (天然) ![]() #3: 抗体 | 分子量: 18485.723 Da / 分子数: 2 / 由来タイプ: 天然 / 由来: (天然) ![]() 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: The GluA4-ATD in Complex with the 1D8-Fab / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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| 由来(天然) | 生物種: ![]() |
| 由来(組換発現) | 生物種: Homo (哺乳類) |
| 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): 2200 nm / 最小 デフォーカス(公称値): 1200 nm |
| 撮影 | 電子線照射量: 60 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 ONLY | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.2 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 182287 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 精密化 | 最高解像度: 3.2 Å 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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ムービー
コントローラー
万見について






中国, 1件
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PDBj





Homo sapiens (ヒト)
FIELD EMISSION GUN