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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: 9arg | |||||||||
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| タイトル | Rat GluN1-GluN2B NMDA receptor channel in apo conformation | |||||||||
要素 |
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キーワード | MEMBRANE PROTEIN / Ligand-gated ion channel / ionotropic glutamate receptor / synaptic membrane protein | |||||||||
| 機能・相同性 | 機能・相同性情報cellular response to corticosterone stimulus / cellular response to magnesium starvation / sensory organ development / cellular response to curcumin / regulation of cAMP/PKA signal transduction / pons maturation / EPHB-mediated forward signaling / Assembly and cell surface presentation of NMDA receptors / regulation of cell communication / auditory behavior ...cellular response to corticosterone stimulus / cellular response to magnesium starvation / sensory organ development / cellular response to curcumin / regulation of cAMP/PKA signal transduction / pons maturation / EPHB-mediated forward signaling / Assembly and cell surface presentation of NMDA receptors / regulation of cell communication / auditory behavior / positive regulation of Schwann cell migration / sensitization / olfactory learning / response to hydrogen sulfide / response to other organism / dendritic branch / fear response / conditioned taste aversion / response to methylmercury / protein localization to postsynaptic membrane / regulation of ARF protein signal transduction / apical dendrite / regulation of respiratory gaseous exchange / response to manganese ion / transmitter-gated monoatomic ion channel activity / suckling behavior / interleukin-1 receptor binding / positive regulation of inhibitory postsynaptic potential / response to carbohydrate / cellular response to dsRNA / cellular response to lipid / propylene metabolic process / response to glycine / RAF/MAP kinase cascade / negative regulation of dendritic spine maintenance / response to amine / response to growth hormone / heterocyclic compound binding / neurotransmitter receptor complex / response to glycoside / Synaptic adhesion-like molecules / positive regulation of glutamate secretion / 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 / small molecule binding / glycine binding / receptor clustering / startle response / positive regulation of reactive oxygen species biosynthetic process / parallel fiber to Purkinje cell synapse / regulation of MAPK cascade / behavioral response to pain / monoatomic ion channel complex / regulation of postsynaptic membrane potential / monoatomic cation transmembrane transport / response to electrical stimulus / action potential / extracellularly glutamate-gated ion channel activity / positive regulation of calcium ion transport into cytosol / cellular response to glycine / associative learning / positive regulation of dendritic spine maintenance / response to magnesium ion / Unblocking of NMDA receptors, glutamate binding and activation / regulation of neuronal synaptic plasticity / monoatomic cation transport / glutamate receptor binding / prepulse inhibition / detection of mechanical stimulus involved in sensory perception of pain / social behavior / ligand-gated monoatomic ion channel activity / response to mechanical stimulus / neuron development / multicellular organismal response to stress / long-term memory / phosphatase binding / postsynaptic density, intracellular component / 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 / regulation of long-term synaptic depression / D2 dopamine receptor binding / glutamate-gated calcium ion channel activity 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: 4.05 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. | |||||||||
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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 | 9arg.cif.gz | 515.2 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9arg.ent.gz | 393.1 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9arg.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/ar/9arg ftp://data.pdbj.org/pub/pdb/validation_reports/ar/9arg | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 43781MC ![]() 9areC ![]() 9arfC ![]() 9arhC ![]() 9ariC ![]() 9bibC 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: 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: Q00960 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: all / 由来: RECOMBINANT |
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| 分子量 | 値: 0.400 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 | グリッドのタイプ: Quantifoil R1.2/1.3 |
| 急速凍結 | 装置: FEI VITROBOT MARK IV / 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 | |||||||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 4.05 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 60195 / 対称性のタイプ: POINT | |||||||||||||||||||||||||||||||||
| 原子モデル構築 | プロトコル: BACKBONE TRACE | |||||||||||||||||||||||||||||||||
| 原子モデル構築 | PDB-ID: 7SAA Accession code: 7SAA / 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
引用










PDBj






FIELD EMISSION GUN
