+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 6irh | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
タイトル | Structure of the human GluN1/GluN2A NMDA receptor in the glutamate/glycine-bound state at pH 6.3, Class III | ||||||||||||||||||
要素 |
| ||||||||||||||||||
キーワード | MEMBRANE PROTEIN (膜タンパク質) / ionotropic glutamate receptors / NMDA receptors (NMDA型グルタミン酸受容体) / 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 / protein localization to postsynaptic membrane / propylene metabolic process / response to glycine / 睡眠 / activation of cysteine-type endopeptidase activity / glutamate-gated calcium ion channel activity ...excitatory chemical synaptic transmission / directional locomotion / Synaptic adhesion-like molecules / serotonin metabolic process / protein localization to postsynaptic membrane / propylene metabolic process / response to glycine / 睡眠 / activation of cysteine-type endopeptidase activity / glutamate-gated calcium ion channel activity / glutamate receptor signaling pathway / Assembly and cell surface presentation of NMDA receptors / regulation of monoatomic cation transmembrane transport / Neurexins and neuroligins / NMDA glutamate receptor activity / NMDA selective glutamate receptor complex / calcium ion transmembrane import into cytosol / protein heterotetramerization / glutamate binding / positive regulation of reactive oxygen species biosynthetic process / glycine binding / positive regulation of calcium ion transport into cytosol / regulation of neuronal synaptic plasticity / dopamine metabolic process / Negative regulation of NMDA receptor-mediated neuronal transmission / startle response / Unblocking of NMDA receptors, glutamate binding and activation / monoatomic cation transmembrane transport / positive regulation of excitatory postsynaptic potential / ligand-gated monoatomic ion channel activity / 長期増強 / monoatomic cation transport / excitatory synapse / calcium ion homeostasis / synaptic cleft / MECP2 regulates neuronal receptors and channels / sensory perception of pain / response to amphetamine / EPHB-mediated forward signaling / excitatory postsynaptic potential / ionotropic glutamate receptor signaling pathway / Ras activation upon Ca2+ influx through NMDA receptor / regulation of membrane potential / 神経発生 / positive regulation of synaptic transmission, glutamatergic / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / synaptic membrane / synaptic transmission, glutamatergic / long-term synaptic potentiation / postsynaptic density membrane / brain development / regulation of synaptic plasticity / protein catabolic process / visual learning / cytoplasmic vesicle membrane / negative regulation of protein catabolic process / terminal bouton / 記憶 / response to wounding / シナプス小胞 / signaling receptor activity / presynaptic membrane / amyloid-beta binding / chemical synaptic transmission / RAF/MAP kinase cascade / postsynaptic membrane / response to ethanol / 樹状突起スパイン / postsynaptic density / learning or memory / calmodulin binding / neuron projection / response to xenobiotic stimulus / positive regulation of apoptotic process / 樹状突起 / glutamatergic synapse / シナプス / calcium ion binding / protein-containing complex binding / endoplasmic reticulum membrane / 細胞膜 / positive regulation of transcription by RNA polymerase II / zinc ion binding / 細胞膜 / 細胞質 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: 7.8 Å | ||||||||||||||||||
データ登録者 | Zhang, J. / Chang, S. / Zhang, X. / Zhu, S. | ||||||||||||||||||
資金援助 | 中国, 5件
| ||||||||||||||||||
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 |
|
-構造の表示
ムービー |
ムービービューア |
---|---|
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 | 6irh.cif.gz | 533.9 KB | 表示 | PDBx/mmCIF形式 |
---|---|---|---|---|
PDB形式 | pdb6irh.ent.gz | 444.8 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 6irh.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/ir/6irh ftp://data.pdbj.org/pub/pdb/validation_reports/ir/6irh | HTTPS FTP |
---|
-関連構造データ
-リンク
-集合体
登録構造単位 |
|
---|---|
1 |
|
-要素
#1: 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 GnTl- / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q05586 #2: タンパク質 | 分子量: 94192.172 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 GnTl- / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q12879 |
---|
-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
---|---|
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 6.3, Class III タイプ: COMPLEX / 詳細: with the presence of Glycine,L-glutamate and EDTA / Entity ID: all / 由来: RECOMBINANT | |||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 GnTl- / プラスミド: pEG-Bacmam | |||||||||||||||||||||||||||||||||||||||||||||
緩衝液 | pH: 6.3 / 詳細: Solutions were made fresh. | |||||||||||||||||||||||||||||||||||||||||||||
緩衝液成分 |
| |||||||||||||||||||||||||||||||||||||||||||||
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 |
---|---|
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 FIELDBright-field microscopy |
撮影 | 平均露光時間: 12 sec. / 電子線照射量: 56 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 |
画像スキャン | 動画フレーム数/画像: 40 / 利用したフレーム数/画像: 1-40 |
-解析
EMソフトウェア |
| ||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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: 722287 | ||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 7.8 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 86215 / 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 |
|