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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: 9bib | |||||||||
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| タイトル | Rat GluN1-GluN2B NMDA receptor channel in complex with glycine, glutamate, and EU-1622-A, in open-channel conformation, C1 symmetry | |||||||||
要素 |
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キーワード | MEMBRANE PROTEIN / Ionotropic glutamate receptor / synaptic membrane protein | |||||||||
| 機能・相同性 | 機能・相同性情報pons maturation / EPHB-mediated forward signaling / Assembly and cell surface presentation of NMDA receptors / regulation of cell communication / positive regulation of Schwann cell migration / olfactory learning / dendritic branch / conditioned taste aversion / protein localization to postsynaptic membrane / regulation of respiratory gaseous exchange ...pons maturation / EPHB-mediated forward signaling / Assembly and cell surface presentation of NMDA receptors / regulation of cell communication / positive regulation of Schwann cell migration / olfactory learning / dendritic branch / conditioned taste aversion / protein localization to postsynaptic membrane / regulation of respiratory gaseous exchange / transmitter-gated monoatomic ion channel activity / suckling behavior / propylene metabolic process / response to glycine / RAF/MAP kinase cascade / response to amine / neurotransmitter receptor complex / response to glycoside / Synaptic adhesion-like molecules / regulation of monoatomic cation transmembrane transport / NMDA glutamate receptor activity / voltage-gated monoatomic cation channel activity / NMDA selective glutamate receptor complex / glutamate binding / ligand-gated sodium channel activity / neuromuscular process / regulation of axonogenesis / calcium ion transmembrane import into cytosol / response to morphine / regulation of dendrite morphogenesis / male mating behavior / regulation of synapse assembly / protein heterotetramerization / glycine binding / startle response / positive regulation of reactive oxygen species biosynthetic process / parallel fiber to Purkinje cell synapse / monoatomic ion channel complex / monoatomic cation transmembrane transport / positive regulation of calcium ion transport into cytosol / cellular response to glycine / associative learning / positive regulation of dendritic spine maintenance / Unblocking of NMDA receptors, glutamate binding and activation / regulation of neuronal synaptic plasticity / monoatomic cation transport / glutamate receptor binding / prepulse inhibition / social behavior / ligand-gated monoatomic ion channel activity / response to mechanical stimulus / long-term memory / phosphatase binding / response to fungicide / behavioral fear response / monoatomic cation channel activity / synaptic cleft / calcium ion homeostasis / positive regulation of synaptic transmission, glutamatergic / cellular response to manganese ion / glutamate-gated receptor activity / glutamate-gated calcium ion channel activity / presynaptic active zone membrane / excitatory synapse / sensory perception of pain / ionotropic glutamate receptor signaling pathway / dendrite membrane / regulation of neuron apoptotic process / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / positive regulation of excitatory postsynaptic potential / hippocampal mossy fiber to CA3 synapse / sodium ion transmembrane transport / response to amphetamine / learning / synaptic membrane / adult locomotory behavior / synaptic transmission, glutamatergic / excitatory postsynaptic potential / regulation of membrane potential / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / neuron cellular homeostasis / cerebral cortex development / regulation of synaptic plasticity / response to calcium ion / visual learning / regulation of long-term neuronal synaptic plasticity / postsynaptic density membrane / calcium ion transmembrane transport / calcium channel activity / memory / intracellular calcium ion homeostasis / terminal bouton / synaptic vesicle / calcium ion transport / long-term synaptic potentiation / rhythmic process / amyloid-beta binding / synaptic vesicle membrane / signaling receptor activity / protein-containing complex assembly 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: 3.81 Å | |||||||||
データ登録者 | Chou, T.-H. / Furukawa, H. | |||||||||
| 資金援助 | 米国, 2件
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引用 | ジャーナル: Nature / 年: 2024タイトル: Molecular mechanism of ligand gating and opening of NMDA receptor. 著者: Tsung-Han Chou / Max Epstein / Russell G Fritzemeier / Nicholas S Akins / Srinu Paladugu / Elijah Z Ullman / Dennis C Liotta / Stephen F Traynelis / Hiro Furukawa / ![]() 要旨: Glutamate transmission and activation of ionotropic glutamate receptors are the fundamental means by which neurons control their excitability and neuroplasticity. The N-methyl-D-aspartate receptor ...Glutamate transmission and activation of ionotropic glutamate receptors are the fundamental means by which neurons control their excitability and neuroplasticity. The N-methyl-D-aspartate receptor (NMDAR) is unique among all ligand-gated channels, requiring two ligands-glutamate and glycine-for activation. These receptors function as heterotetrameric ion channels, with the channel opening dependent on the simultaneous binding of glycine and glutamate to the extracellular ligand-binding domains (LBDs) of the GluN1 and GluN2 subunits, respectively. The exact molecular mechanism for channel gating by the two ligands has been unclear, particularly without structures representing the open channel and apo states. Here we show that the channel gate opening requires tension in the linker connecting the LBD and transmembrane domain (TMD) and rotation of the extracellular domain relative to the TMD. Using electron cryomicroscopy, we captured the structure of the GluN1-GluN2B (GluN1-2B) NMDAR in its open state bound to a positive allosteric modulator. This process rotates and bends the pore-forming helices in GluN1 and GluN2B, altering the symmetry of the TMD channel from pseudofourfold to twofold. Structures of GluN1-2B NMDAR in apo and single-liganded states showed that binding of either glycine or glutamate alone leads to distinct GluN1-2B dimer arrangements but insufficient tension in the LBD-TMD linker for channel opening. This mechanistic framework identifies a key determinant for channel gating and a potential pharmacological strategy for modulating NMDAR activity. | |||||||||
| 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 | 9bib.cif.gz | 494.2 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9bib.ent.gz | 365.5 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9bib.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/bi/9bib ftp://data.pdbj.org/pub/pdb/validation_reports/bi/9bib | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 44586MC ![]() 9areC ![]() 9arfC ![]() 9argC ![]() 9arhC ![]() 9ariC 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
| #1: タンパク質 | 分子量: 95225.883 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() 参照: UniProt: P35439 #2: タンパク質 | 分子量: 98888.945 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() 参照: UniProt: G3V746 #3: 化合物 | #4: 化合物 | 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: Di-heterotetrameric GluN1-GluN2B NMDA receptors / タイプ: COMPLEX / Entity ID: #1-#2 / 由来: RECOMBINANT |
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| 分子量 | 値: 0.4 MDa / 実験値: NO |
| 由来(天然) | 生物種: ![]() |
| 由来(組換発現) | 生物種: ![]() |
| 緩衝液 | pH: 7.5 |
| 試料 | 濃度: 4 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: 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 | 凍結剤: ETHANE / 湿度: 85 % / 凍結前の試料温度: 285 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: FEI TITAN 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): 2800 nm / 最小 デフォーカス(公称値): 1400 nm |
| 撮影 | 電子線照射量: 66.3 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
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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: 1426240 | ||||||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.81 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 293641 / 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 | PDB-ID: 9ARE Accession code: 9ARE / Source name: PDB / タイプ: experimental model | ||||||||||||||||||||||||||||||||
| 拘束条件 |
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万見について






米国, 2件
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FIELD EMISSION GUN