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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: 7qhb | ||||||||||||
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| タイトル | Active state of GluA1/2 in complex with TARP gamma 8, L-glutamate and CTZ | ||||||||||||
要素 |
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キーワード | MEMBRANE PROTEIN / glutamate / AMPA receptor / TARPs | ||||||||||||
| 機能・相同性 | 機能・相同性情報Phase 0 - rapid depolarisation / Phase 2 - plateau phase / Cargo concentration in the ER / axonal spine / positive regulation of locomotion involved in locomotory behavior / positive regulation of membrane potential / COPII-mediated vesicle transport / cellular response to ammonium ion / response to sucrose / L-type voltage-gated calcium channel complex ...Phase 0 - rapid depolarisation / Phase 2 - plateau phase / Cargo concentration in the ER / axonal spine / positive regulation of locomotion involved in locomotory behavior / positive regulation of membrane potential / COPII-mediated vesicle transport / cellular response to ammonium ion / response to sucrose / L-type voltage-gated calcium channel complex / myosin V binding / neuron spine / postsynaptic neurotransmitter receptor diffusion trapping / proximal dendrite / LGI-ADAM interactions / regulation of AMPA receptor activity / Trafficking of AMPA receptors / protein phosphatase 2B binding / response to arsenic-containing substance / regulation of monoatomic ion transmembrane transport / channel regulator activity / cellular response to L-glutamate / cellular response to dsRNA / ligand-gated calcium channel activity / dendritic spine membrane / beta-2 adrenergic receptor binding / Synaptic adhesion-like molecules / long-term synaptic depression / cellular response to peptide hormone stimulus / spine synapse / dendritic spine neck / dendritic spine cytoplasm / cellular response to amine stimulus / dendritic spine head / peptide hormone receptor binding / response to psychosocial stress / response to morphine / Activation of AMPA receptors / spinal cord development / perisynaptic space / ligand-gated monoatomic cation channel activity / neuronal cell body membrane / protein kinase A binding / Trafficking of GluR2-containing AMPA receptors / response to lithium ion / AMPA glutamate receptor activity / transmission of nerve impulse / AMPA glutamate receptor clustering / behavioral response to pain / kainate selective glutamate receptor activity / immunoglobulin binding / adenylate cyclase binding / asymmetric synapse / response to electrical stimulus / AMPA glutamate receptor complex / regulation of receptor recycling / extracellularly glutamate-gated ion channel activity / cellular response to glycine / ionotropic glutamate receptor complex / Unblocking of NMDA receptors, glutamate binding and activation / G-protein alpha-subunit binding / glutamate receptor binding / conditioned place preference / positive regulation of synaptic transmission / long-term memory / regulation of postsynaptic membrane neurotransmitter receptor levels / voltage-gated calcium channel activity / postsynaptic density, intracellular component / response to fungicide / regulation of synaptic transmission, glutamatergic / neuronal action potential / positive regulation of synaptic transmission, glutamatergic / glutamate-gated receptor activity / extracellular ligand-gated monoatomic ion channel activity / cytoskeletal protein binding / cellular response to brain-derived neurotrophic factor stimulus / regulation of long-term synaptic depression / somatodendritic compartment / glutamate-gated calcium ion channel activity / presynaptic active zone membrane / synapse assembly / excitatory synapse / ionotropic glutamate receptor signaling pathway / ionotropic glutamate receptor binding / dendrite membrane / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / dendrite cytoplasm / positive regulation of excitatory postsynaptic potential / dendritic shaft / synaptic membrane / SNARE binding / response to cocaine / PDZ domain binding / calcium channel regulator activity / neuromuscular junction / synaptic transmission, glutamatergic / establishment of protein localization / cellular response to amino acid stimulus / protein tetramerization / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential 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: 3.5 Å | ||||||||||||
データ登録者 | Herguedas, B. / Kohegyi, B. / Zhang, D. / Greger, I.H. | ||||||||||||
| 資金援助 | スペイン, 3件
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引用 | ジャーナル: Nat Commun / 年: 2022タイトル: Mechanisms underlying TARP modulation of the GluA1/2-γ8 AMPA receptor. 著者: Beatriz Herguedas / Bianka K Kohegyi / Jan-Niklas Dohrke / Jake F Watson / Danyang Zhang / Hinze Ho / Saher A Shaikh / Remigijus Lape / James M Krieger / Ingo H Greger / ![]() 要旨: AMPA-type glutamate receptors (AMPARs) mediate rapid signal transmission at excitatory synapses in the brain. Glutamate binding to the receptor's ligand-binding domains (LBDs) leads to ion channel ...AMPA-type glutamate receptors (AMPARs) mediate rapid signal transmission at excitatory synapses in the brain. Glutamate binding to the receptor's ligand-binding domains (LBDs) leads to ion channel activation and desensitization. Gating kinetics shape synaptic transmission and are strongly modulated by transmembrane AMPAR regulatory proteins (TARPs) through currently incompletely resolved mechanisms. Here, electron cryo-microscopy structures of the GluA1/2 TARP-γ8 complex, in both open and desensitized states (at 3.5 Å), reveal state-selective engagement of the LBDs by the large TARP-γ8 loop ('β1'), elucidating how this TARP stabilizes specific gating states. We further show how TARPs alter channel rectification, by interacting with the pore helix of the selectivity filter. Lastly, we reveal that the Q/R-editing site couples the channel constriction at the filter entrance to the gate, and forms the major cation binding site in the conduction path. Our results provide a mechanistic framework of how TARPs modulate AMPAR gating and conductance. | ||||||||||||
| 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: 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 | 7qhb.cif.gz | 392.8 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb7qhb.ent.gz | 286.8 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 7qhb.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/qh/7qhb ftp://data.pdbj.org/pub/pdb/validation_reports/qh/7qhb | HTTPS FTP |
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-関連構造データ
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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
-Isoform Flip of Glutamate receptor ... , 2種, 4分子 ACBD
| #1: タンパク質 | 分子量: 102661.930 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() Homo sapiens (ヒト) / 参照: UniProt: P19490#2: タンパク質 | 分子量: 96247.055 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() Homo sapiens (ヒト) / 参照: UniProt: P19491 |
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-タンパク質 , 1種, 2分子 IJ
| #3: タンパク質 | 分子量: 43576.004 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() Homo sapiens (ヒト) / 参照: UniProt: Q8VHW5 |
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-非ポリマー , 5種, 28分子 








| #4: 化合物 | ChemComp-PAM / #5: 化合物 | ChemComp-GLU / #6: 化合物 | ChemComp-CYZ / #7: 化合物 | #8: 化合物 | ChemComp-79N / ( |
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-詳細
| 研究の焦点であるリガンドがあるか | Y |
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| Has protein modification | Y |
-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: Complex between GluA1/2 AMPA receptor and auxiliary subunit TARP gamma8 タイプ: COMPLEX / 詳細: GluA2 and TARP8 are expressed as a tandem construct / Entity ID: #1-#3 / 由来: RECOMBINANT |
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| 分子量 | 値: 0.490 MDa / 実験値: NO |
| 由来(天然) | 生物種: ![]() |
| 由来(組換発現) | 生物種: Homo sapiens (ヒト) / プラスミド: PRK5 |
| 緩衝液 | pH: 8 詳細: 25 mM TRIS 150 mM NaCl 0.02 % GDN 87 uM CTZ 100 mM L-Glu |
| 試料 | 濃度: 2.5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: Sample was incubated with 87 uM CTZ for 30 minutes and 100 mM L-Glutamate was added before grid preparation |
| 試料支持 | グリッドの材料: COPPER / グリッドのサイズ: 300 divisions/in. / 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: 100 % / 凍結前の試料温度: 277 K / 詳細: 3-4 second blots |
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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: OTHER |
| 電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2200 nm / 最小 デフォーカス(公称値): 340 nm |
| 試料ホルダ | 凍結剤: NITROGEN |
| 撮影 | 平均露光時間: 4 sec. / 電子線照射量: 51 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 撮影したグリッド数: 1 / 実像数: 9664 |
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解析
| ソフトウェア | 名称: PHENIX / バージョン: 1.18.1_3865: / 分類: 精密化 | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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| EMソフトウェア |
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| CTF補正 | 詳細: CTF refinement was performed after 3D reconstruction タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| 対称性 | 点対称性: C2 (2回回転対称) | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 83344 / アルゴリズム: FOURIER SPACE / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | 詳細: Initial fitting was performed in Chimera with the Rigid Body fit option. The crystal structure of the L-Glu+CTZ GluA2 LBD was used for the LBD layer. After rigid body fitting Refmac and ...詳細: Initial fitting was performed in Chimera with the Rigid Body fit option. The crystal structure of the L-Glu+CTZ GluA2 LBD was used for the LBD layer. After rigid body fitting Refmac and Phenix were used in refinement. Manual model building was performed in Coot | ||||||||||||||||||||||||||||||||||||||||||||||||||||
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| 拘束条件 |
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ムービー
コントローラー
万見について






スペイン, 3件
引用

UCSF Chimera
















PDBj











Homo sapiens (ヒト)

