+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 6ira | ||||||||||||||||||
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タイトル | Structure of the human GluN1/GluN2A NMDA receptor in the glutamate/glycine-bound state at pH 7.8 | ||||||||||||||||||
要素 |
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キーワード | MEMBRANE PROTEIN / ionotropic glutamate receptors / NMDA receptors / synaptic protein | ||||||||||||||||||
機能・相同性 | 機能・相同性情報 excitatory chemical synaptic transmission / directional locomotion / Synaptic adhesion-like molecules / serotonin metabolic process / activation of cysteine-type endopeptidase activity / protein localization to postsynaptic membrane / propylene metabolic process / response to glycine / sleep / regulation of monoatomic cation transmembrane transport ...excitatory chemical synaptic transmission / directional locomotion / Synaptic adhesion-like molecules / serotonin metabolic process / activation of cysteine-type endopeptidase activity / protein localization to postsynaptic membrane / propylene metabolic process / response to glycine / sleep / regulation of monoatomic cation transmembrane transport / Assembly and cell surface presentation of NMDA receptors / NMDA glutamate receptor activity / Neurexins and neuroligins / NMDA selective glutamate receptor complex / calcium ion transmembrane import into cytosol / glutamate binding / glutamate receptor signaling pathway / protein heterotetramerization / positive regulation of calcium ion transport into cytosol / positive regulation of reactive oxygen species biosynthetic process / glycine binding / startle response / Negative regulation of NMDA receptor-mediated neuronal transmission / Unblocking of NMDA receptors, glutamate binding and activation / dopamine metabolic process / monoatomic cation transmembrane transport / regulation of neuronal synaptic plasticity / monoatomic cation transport / Long-term potentiation / excitatory synapse / ligand-gated monoatomic ion channel activity / positive regulation of excitatory postsynaptic potential / calcium ion homeostasis / synaptic cleft / MECP2 regulates neuronal receptors and channels / glutamate-gated calcium ion channel activity / EPHB-mediated forward signaling / sensory perception of pain / response to amphetamine / Ras activation upon Ca2+ influx through NMDA receptor / ionotropic glutamate receptor signaling pathway / neurogenesis / positive regulation of synaptic transmission, glutamatergic / regulation of membrane potential / excitatory postsynaptic potential / synaptic transmission, glutamatergic / synaptic membrane / long-term synaptic potentiation / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / postsynaptic density membrane / brain development / visual learning / cytoplasmic vesicle membrane / protein catabolic process / regulation of synaptic plasticity / negative regulation of protein catabolic process / terminal bouton / memory / response to wounding / synaptic vesicle / signaling receptor activity / presynaptic membrane / amyloid-beta binding / RAF/MAP kinase cascade / chemical synaptic transmission / postsynaptic membrane / response to ethanol / dendritic spine / postsynaptic density / learning or memory / calmodulin binding / neuron projection / positive regulation of apoptotic process / response to xenobiotic stimulus / glutamatergic synapse / dendrite / calcium ion binding / synapse / 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: 4.5 Å | ||||||||||||||||||
データ登録者 | Zhang, J. / Chang, S. / Zhang, X. / Zhu, S. | ||||||||||||||||||
資金援助 | 中国, 5件
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引用 | ジャーナル: Cell Rep / 年: 2018 タイトル: Structural Basis of the Proton Sensitivity of Human GluN1-GluN2A NMDA Receptors. 著者: Jin-Bao Zhang / Shenghai Chang / Pan Xu / Miao Miao / Hangjun Wu / Youyi Zhang / Tongtong Zhang / Han Wang / Jilin Zhang / Chun Xie / Nan Song / Cheng Luo / Xing Zhang / Shujia Zhu / 要旨: N-methyl-D-aspartate (NMDA) receptors are critical for synaptic development and plasticity. While glutamate is the primary agonist, protons can modulate NMDA receptor activity at synapses during ...N-methyl-D-aspartate (NMDA) receptors are critical for synaptic development and plasticity. While glutamate is the primary agonist, protons can modulate NMDA receptor activity at synapses during vesicle exocytosis by mechanisms that are unknown. We used cryo-electron microscopy to solve the structures of the human GluN1-GluN2A NMDA receptor at pH 7.8 and pH 6.3. Our structures demonstrate that the proton sensor predominantly resides in the N-terminal domain (NTD) of the GluN2A subunit and reveal the allosteric coupling mechanism between the proton sensor and the channel gate. Under high-pH conditions, the GluN2A-NTD adopts an "open-and-twisted" conformation. However, upon protonation at the lower pH, the GluN2A-NTD transits from an open- to closed-cleft conformation, causing rearrangements between the tetrameric NTDs and agonist-binding domains. The conformational mobility observed in our structures (presumably from protonation) is supported by molecular dynamics simulation. Our findings reveal the structural mechanisms by which protons allosterically inhibit human GluN1-GluN2A receptor activity. | ||||||||||||||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 6ira.cif.gz | 540.9 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb6ira.ent.gz | 437.7 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 6ira.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 | 6ira_validation.pdf.gz | 1 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 6ira_full_validation.pdf.gz | 1.1 MB | 表示 | |
XML形式データ | 6ira_validation.xml.gz | 91.3 KB | 表示 | |
CIF形式データ | 6ira_validation.cif.gz | 135.4 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/ir/6ira ftp://data.pdbj.org/pub/pdb/validation_reports/ir/6ira | HTTPS FTP |
-関連構造データ
-リンク
-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: 95603.875 Da / 分子数: 2 / 変異: E656R, E657R / 由来タイプ: 組換発現 / 詳細: 2 mM L-Glutamate / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: GRIN2A, NMDAR2A / 細胞株 (発現宿主): HEK293S GnTI- / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q12879 #2: タンパク質 | 分子量: 95336.219 Da / 分子数: 2 / 変異: G612R / 由来タイプ: 組換発現 / 詳細: 2 mM Glycine / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: GRIN1, NMDAR1 / 細胞株 (発現宿主): HEK293S GnTI- / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q05586 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 |
-試料調製
構成要素 | 名称: Human GluN1/GluN2A NMDA receptors in the glutamate/glycine-bound state at pH 7.8 タイプ: COMPLEX / 詳細: with the presence of Glycine, L-glutamate and EDTA / Entity ID: all / 由来: RECOMBINANT | |||||||||||||||||||||||||||||||||||||||||||||
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分子量 | 値: 0.38 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: Homo sapiens (ヒト) / 細胞: HEK293S GnTI - / プラスミド: pEG-Bacmam | |||||||||||||||||||||||||||||||||||||||||||||
緩衝液 | pH: 7.8 / 詳細: Solutions were made fresh. | |||||||||||||||||||||||||||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 3.5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES / 詳細: Tetrameric GluN1/GluN2A NMDA receptors | |||||||||||||||||||||||||||||||||||||||||||||
試料支持 | 詳細: 15 mA / グリッドの材料: GOLD / 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 II / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 291 K 詳細: blot for 2 seconds before plunging in liquid ethane. |
-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 |
撮影 | 平均露光時間: 8 sec. / 電子線照射量: 63 e/Å2 / 検出モード: SUPER-RESOLUTION フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 撮影したグリッド数: 4 / 実像数: 3171 |
画像スキャン | 動画フレーム数/画像: 32 / 利用したフレーム数/画像: 1-32 |
-解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 431818 | ||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C2 (2回回転対称) | ||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 4.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 131990 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: RIGID BODY FIT | ||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | 3D fitting-ID: 1 / Source name: PDB / タイプ: experimental model
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