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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: 9oos | |||||||||||||||||||||||||||
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| タイトル | Non-active state of Gly/Glu/Pregnenolone Sulfate bound hGluN1a-2B NMDAR | |||||||||||||||||||||||||||
要素 | (Glutamate receptor ionotropic, NMDA ...) x 2 | |||||||||||||||||||||||||||
キーワード | MEMBRANE PROTEIN / N-methyl-D-aspartate receptor / Non-active / GluN2B / Pregnenolone Sulfate | |||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報glycine-gated cation channel activity / excitatory chemical synaptic transmission / Activated NTRK2 signals through FYN / Synaptic adhesion-like molecules / response to glycine / propylene metabolic process / negative regulation of dendritic spine maintenance / Assembly and cell surface presentation of NMDA receptors / regulation of monoatomic cation transmembrane transport / NMDA glutamate receptor activity ...glycine-gated cation channel activity / excitatory chemical synaptic transmission / Activated NTRK2 signals through FYN / Synaptic adhesion-like molecules / response to glycine / propylene metabolic process / negative regulation of dendritic spine maintenance / Assembly and cell surface presentation of NMDA receptors / regulation of monoatomic cation transmembrane transport / NMDA glutamate receptor activity / Neurexins and neuroligins / NMDA selective glutamate receptor complex / glutamate binding / neurotransmitter receptor complex / ligand-gated sodium channel activity / glutamate receptor signaling pathway / calcium ion transmembrane import into cytosol / protein heterotetramerization / glycine binding / ligand-gated monoatomic ion channel activity / positive regulation of reactive oxygen species biosynthetic process / Negative regulation of NMDA receptor-mediated neuronal transmission / monoatomic cation transmembrane transport / Unblocking of NMDA receptors, glutamate binding and activation / positive regulation of calcium ion transport into cytosol / Long-term potentiation / regulation of neuronal synaptic plasticity / monoatomic cation transport / positive regulation of synaptic transmission, glutamatergic / synaptic cleft / calcium ion homeostasis / MECP2 regulates neuronal receptors and channels / glutamate-gated calcium ion channel activity / EPHB-mediated forward signaling / excitatory synapse / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / ionotropic glutamate receptor signaling pathway / Ras activation upon Ca2+ influx through NMDA receptor / sodium ion transmembrane transport / synaptic membrane / positive regulation of excitatory postsynaptic potential / excitatory postsynaptic potential / synaptic transmission, glutamatergic / regulation of membrane potential / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / regulation of synaptic plasticity / brain development / visual learning / postsynaptic density membrane / calcium ion transmembrane transport / terminal bouton / synaptic vesicle / long-term synaptic potentiation / late endosome / signaling receptor activity / amyloid-beta binding / RAF/MAP kinase cascade / dendritic spine / response to ethanol / chemical synaptic transmission / cytoskeleton / postsynaptic membrane / learning or memory / calmodulin binding / lysosome / neuron projection / postsynaptic density / calcium ion binding / synapse / dendrite / endoplasmic reticulum membrane / protein-containing complex binding / cell surface / positive regulation of transcription by RNA polymerase II / zinc ion binding / plasma membrane / cytoplasm 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: 3.03 Å | |||||||||||||||||||||||||||
データ登録者 | Hyunook, K. / Hiro, F. | |||||||||||||||||||||||||||
| 資金援助 | 米国, 2件
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引用 | ジャーナル: Nature / 年: 2025タイトル: Mechanism of conductance control and neurosteroid binding in NMDA receptors. 著者: Hyunook Kang / Ruben Steigerwald / Elijah Z Ullman / Max Epstein / Srinu Paladugu / Dennis C Liotta / Stephen F Traynelis / Hiro Furukawa / ![]() 要旨: Ion-channel activity reflects a combination of open probability and unitary conductance. Many channels display subconductance states that modulate signalling strength, yet the structural mechanisms ...Ion-channel activity reflects a combination of open probability and unitary conductance. Many channels display subconductance states that modulate signalling strength, yet the structural mechanisms governing conductance levels remain incompletely understood. Here we report that conductance levels are controlled by the bending patterns of pore-forming transmembrane helices in the heterotetrameric neuronal channel GluN1a-2B N-methyl-D-aspartate receptor (NMDAR). Our single-particle electron cryomicroscopy (cryo-EM) analyses demonstrate that an endogenous neurosteroid and synthetic positive allosteric modulator (PAM), 24S-hydroxycholesterol (24S-HC), binds to a juxtamembrane pocket in the GluN2B subunit and stabilizes the fully open-gate conformation, where GluN1a M3 and GluN2B M3' pore-forming helices are bent to dilate the channel pore. By contrast, EU1622-240 binds to the same GluN2B juxtamembrane pocket and a distinct juxtamembrane pocket in GluN1a to stabilize a sub-open state whereby only the GluN2B M3' helix is bent. Consistent with the varying extents of gate opening, the single-channel recordings predominantly show full-conductance and subconductance states in the presence of 24S-HC and EU1622-240, respectively. Another class of neurosteroid, pregnenolone sulfate, engages a similar GluN2B pocket, but two molecules bind simultaneously, revealing a diverse neurosteroid recognition pattern. Our study identifies that the juxtamembrane pockets are critical structural hubs for modulating conductance levels in NMDAR. | |||||||||||||||||||||||||||
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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 | 9oos.cif.gz | 623.6 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9oos.ent.gz | 495.3 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9oos.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/9oos ftp://data.pdbj.org/pub/pdb/validation_reports/oo/9oos | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 70671MC ![]() 9ooqC ![]() 9oorC ![]() 9ootC ![]() 9oouC C: 同じ文献を引用 ( M: このデータのモデリングに利用したマップデータ |
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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
-Glutamate receptor ionotropic, NMDA ... , 2種, 4分子 ACBD
| #1: タンパク質 | 分子量: 93149.320 Da / 分子数: 2 / 変異: C22S,R844N,R845G,K846A / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: GRIN1, NMDAR1発現宿主: ![]() 参照: UniProt: Q05586 #2: タンパク質 | 分子量: 96393.797 Da / 分子数: 2 / 変異: C588S,C838S,C849S / 由来タイプ: 組換発現 / 詳細: Twin-strep tag at the N-terminus / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: GRIN2B, NMDAR2B発現宿主: ![]() 参照: UniProt: Q13224 |
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-非ポリマー , 4種, 12分子 






| #3: 化合物 | | #4: 化合物 | ChemComp-POV / ( #5: 化合物 | #6: 化合物 | ChemComp-A8W / |
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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: Intermediate state hGluN1a-2B / タイプ: COMPLEX / Entity ID: #1-#2 / 由来: RECOMBINANT |
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| 分子量 | 値: 0.387 MDa / 実験値: NO |
| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 由来(組換発現) | 生物種: ![]() |
| 緩衝液 | pH: 8.5 |
| 試料 | 濃度: 3 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
| 試料支持 | グリッドの材料: COPPER / グリッドのサイズ: 200 divisions/in. / グリッドのタイプ: Quantifoil 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: 281 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: 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): 800 nm |
| 試料ホルダ | 凍結剤: NITROGEN |
| 撮影 | 電子線照射量: 56.4 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
| 電子光学装置 | エネルギーフィルター名称: GIF Bioquantum / エネルギーフィルタースリット幅: 14 eV |
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解析
| EMソフトウェア |
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| CTF補正 | タイプ: NONE | ||||||||||||||||||||||||
| 粒子像の選択 | 選択した粒子像数: 1546778 | ||||||||||||||||||||||||
| 対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.03 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 179791 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 原子モデル構築 | プロトコル: RIGID BODY FIT / 空間: REAL | ||||||||||||||||||||||||
| 原子モデル構築 | 3D fitting-ID: 1 / Accession code: 7saa / Initial refinement model-ID: 1 / PDB-ID: 7saa / Source name: PDB / タイプ: experimental model
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| 精密化 | 最高解像度: 3.03 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




Homo sapiens (ヒト)
米国, 2件
引用




















PDBj

















FIELD EMISSION GUN
