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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: 9ooo | ||||||||||||||||||||||||
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| タイトル | Human delta 2 receptor with R710W Cerebellar Ataxia mutation in the apo closed state | ||||||||||||||||||||||||
要素 | Glutamate receptor ionotropic, delta-2 | ||||||||||||||||||||||||
キーワード | TRANSPORT PROTEIN / Ligand-gated ion channel / ion channel / neurotransmitter receptor | ||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報trans-synaptic protein complex / cerebellar granule cell differentiation / positive regulation of long-term synaptic depression / excitatory synapse assembly / synaptic signaling via neuropeptide / regulation of postsynaptic density assembly / glutamate receptor activity / positive regulation of synapse assembly / heterophilic cell-cell adhesion / glutamate receptor signaling pathway ...trans-synaptic protein complex / cerebellar granule cell differentiation / positive regulation of long-term synaptic depression / excitatory synapse assembly / synaptic signaling via neuropeptide / regulation of postsynaptic density assembly / glutamate receptor activity / positive regulation of synapse assembly / heterophilic cell-cell adhesion / glutamate receptor signaling pathway / regulation of neuron projection development / parallel fiber to Purkinje cell synapse / AMPA glutamate receptor activity / AMPA glutamate receptor complex / ionotropic glutamate receptor complex / prepulse inhibition / regulation of presynapse assembly / regulation of postsynaptic membrane neurotransmitter receptor levels / regulation of neuron apoptotic process / PDZ domain binding / excitatory postsynaptic 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 / intracellular protein localization / scaffold protein binding / dendritic spine / synapse / glutamatergic synapse / metal ion binding / identical protein binding / plasma membrane 類似検索 - 分子機能 | ||||||||||||||||||||||||
| 生物種 | Homo sapiens (ヒト) | ||||||||||||||||||||||||
| 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: 3.68 Å | ||||||||||||||||||||||||
データ登録者 | Wang, H. / Ahmed, F. / Khau, J. / Mondal, A.K. / Twomey, E.C. | ||||||||||||||||||||||||
| 資金援助 | 米国, 1件
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引用 | ジャーナル: Nature / 年: 2025タイトル: Delta-type glutamate receptors are ligand-gated ion channels. 著者: Haobo Wang / Fairine Ahmed / Jeffrey Khau / Anish Kumar Mondal / Edward C Twomey / ![]() 要旨: Delta-type ionotropic glutamate receptors (iGluRs, also known as GluDs) are members of the iGluR ligand-gated ion channel family, yet their function remains unknown. Although GluDs are widely ...Delta-type ionotropic glutamate receptors (iGluRs, also known as GluDs) are members of the iGluR ligand-gated ion channel family, yet their function remains unknown. Although GluDs are widely expressed in the brain, have key roles in synaptic organization, and harbour disease-linked mutations, whether they retain iGluR-like channel function is debated as currents have not been directly observed. Here we define GluDs as ligand-gated ion channels that are tightly regulated in cellular contexts by purifying human GluD2 (hGluD2) and directly characterizing its structure and function using cryo-electron microscopy and bilayer recordings. We show that hGluD2 is activated by D-serine and GABA (γ-aminobutyric acid), with augmented activation at physiological temperatures. We reveal that hGluD2 contains an ion channel directly coupled to clamshell-like ligand-binding domains, which are coordinated by the amino-terminal domain above the ion channel. Ligand binding triggers channel opening via an asymmetric mechanism, and a cerebellar ataxia point mutation in the ligand-binding domain rearranges the receptor architecture and induces leak currents. Our findings demonstrate that GluDs possess the intrinsic biophysical properties of ligand-gated ion channels, reconciling prior conflicting observations to establish a framework for understanding their cellular regulation and for developing therapies targeting GluD2. | ||||||||||||||||||||||||
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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 | 9ooo.cif.gz | 582 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9ooo.ent.gz | 473.4 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9ooo.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/oo/9ooo ftp://data.pdbj.org/pub/pdb/validation_reports/oo/9ooo | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 70667MC ![]() 9nwoC ![]() 9nwpC ![]() 9nwqC ![]() 9oopC 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: 94316.406 Da / 分子数: 4 / 変異: R710W / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: GRID2, GLURD2 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: O43424Has 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: Human Delta-2 Receptor with the R710W cerebellar ataxia mutation 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: Homo sapiens (ヒト) |
| 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): 2500 nm / 最小 デフォーカス(公称値): 900 nm |
| 撮影 | 電子線照射量: 45 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 / バージョン: 1.21.1_5286 / 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: 3.68 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 153060 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 精密化 | 最高解像度: 3.68 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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万見について




Homo sapiens (ヒト)
米国, 1件
引用








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FIELD EMISSION GUN