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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: 9iyq | |||||||||||||||||||||||||||
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| タイトル | Structure of the human GluN1-N2B NMDA receptors in the Mg2+ free state | |||||||||||||||||||||||||||
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キーワード | MEMBRANE PROTEIN / GluN1-N2B NMDA receptors | |||||||||||||||||||||||||||
| 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 / NMDA selective glutamate receptor complex / Neurexins and neuroligins / glutamate binding / ligand-gated sodium channel activity / neurotransmitter receptor complex / glutamate receptor signaling pathway / calcium ion transmembrane import into cytosol / protein heterotetramerization / glycine binding / monoatomic cation transmembrane transport / positive regulation of reactive oxygen species biosynthetic process / Negative regulation of NMDA receptor-mediated neuronal transmission / Unblocking of NMDA receptors, glutamate binding and activation / positive regulation of calcium ion transport into cytosol / Long-term potentiation / excitatory synapse / monoatomic cation transport / regulation of neuronal synaptic plasticity / monoatomic ion channel complex / positive regulation of excitatory postsynaptic potential / synaptic cleft / positive regulation of synaptic transmission, glutamatergic / calcium ion homeostasis / MECP2 regulates neuronal receptors and channels / glutamate-gated calcium ion channel activity / EPHB-mediated forward signaling / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / ionotropic glutamate receptor signaling pathway / sodium ion transmembrane transport / Ras activation upon Ca2+ influx through NMDA receptor / synaptic membrane / regulation of membrane potential / excitatory postsynaptic potential / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / synaptic transmission, glutamatergic / postsynaptic density membrane / brain development / visual learning / regulation of synaptic plasticity / calcium ion transmembrane transport / long-term synaptic potentiation / terminal bouton / synaptic vesicle / late endosome / signaling receptor activity / amyloid-beta binding / RAF/MAP kinase cascade / response to ethanol / dendritic spine / chemical synaptic transmission / postsynaptic membrane / learning or memory / calmodulin binding / cytoskeleton / 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: 3.18 Å | |||||||||||||||||||||||||||
データ登録者 | Huang, X. / Sun, X. / Zhu, S. | |||||||||||||||||||||||||||
| 資金援助 | 中国, 3件
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引用 | ジャーナル: Neuron / 年: 2025タイトル: Structural insights into the diverse actions of magnesium on NMDA receptors. 著者: Xuejing Huang / Xiaole Sun / Qinrui Wang / Jilin Zhang / Han Wen / Wan-Jin Chen / Shujia Zhu / ![]() 要旨: Magnesium (Mg) is a key regulatory ion of N-methyl-ᴅ-aspartate (NMDA) receptors, including conferring them to function as coincidence detectors for excitatory synaptic transmission. However, the ...Magnesium (Mg) is a key regulatory ion of N-methyl-ᴅ-aspartate (NMDA) receptors, including conferring them to function as coincidence detectors for excitatory synaptic transmission. However, the structural basis underlying the Mg action on NMDA receptors remains unclear. Here, we report the cryo-EM structures of GluN1-N2B receptors and identify three distinct Mg-binding pockets. Specifically, site Ⅰ is located at the selectivity filter where an asparagine ring forms coordination bonds with Mg and is responsible for the voltage-dependent block. Sites Ⅱ and Ⅲ are located at the N-terminal domain (NTD) of the GluN2B subunit and involved in the allosteric potentiation and inhibition, respectively. Site Ⅱ consists of three acidic residues, and the combination of three mutations abolishes the GluN2B-specific Mg potentiation, while site Ⅲ overlaps with the Zn pocket, and mutations here significantly reduce the inhibition. Our study enhances the understanding of multifaceted roles of Mg in NMDA receptors and synaptic plasticity. | |||||||||||||||||||||||||||
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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 | 9iyq.cif.gz | 596.2 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9iyq.ent.gz | 476.2 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9iyq.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
| 文書・要旨 | 9iyq_validation.pdf.gz | 546.8 KB | 表示 | wwPDB検証レポート |
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| 文書・詳細版 | 9iyq_full_validation.pdf.gz | 615.6 KB | 表示 | |
| XML形式データ | 9iyq_validation.xml.gz | 67 KB | 表示 | |
| CIF形式データ | 9iyq_validation.cif.gz | 96.6 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/iy/9iyq ftp://data.pdbj.org/pub/pdb/validation_reports/iy/9iyq | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 61001MC ![]() 9iypC 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: 95236.078 Da / 分子数: 2 / 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: Homo sapiens (ヒト) / 参照: UniProt: Q05586#2: タンパク質 | 分子量: 94365.008 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: GRIN2B, NMDAR2B / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q13224#3: 化合物 | #4: 糖 | ChemComp-NAG / #5: 化合物 | 研究の焦点であるリガンドがあるか | N | 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: CELL / 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 GluN1-N2B receptors in the Mg2+-free state / タイプ: COMPLEX / Entity ID: #1-#2 / 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): 1600 nm / 最小 デフォーカス(公称値): 1000 nm |
| 撮影 | 電子線照射量: 53 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 / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
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| CTF補正 | タイプ: NONE | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.18 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 229948 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 精密化 | 最高解像度: 3.18 Å 立体化学のターゲット値: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS) | ||||||||||||||||||||||||
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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)
中国, 3件
引用


PDBj


















FIELD EMISSION GUN