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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: 7occ | |||||||||
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| タイトル | NTD of resting state GluA1/A2 heterotertramer | |||||||||
要素 |
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キーワード | MEMBRANE PROTEIN / AMPAR / ion channels / neurotransmission | |||||||||
| 機能・相同性 | 機能・相同性情報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 / neuron spine / myosin V binding / proximal dendrite ...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 / neuron spine / myosin V binding / proximal dendrite / regulation of monoatomic ion transmembrane transport / Trafficking of AMPA receptors / response to arsenic-containing substance / cellular response to L-glutamate / cellular response to dsRNA / dendritic spine membrane / long-term synaptic depression / beta-2 adrenergic receptor binding / Synaptic adhesion-like molecules / cellular response to peptide hormone stimulus / spine synapse / response to morphine / dendritic spine neck / dendritic spine cytoplasm / dendritic spine head / neuronal cell body membrane / cellular response to amine stimulus / response to psychosocial stress / peptide hormone receptor binding / spinal cord development / perisynaptic space / Activation of AMPA receptors / ligand-gated monoatomic cation channel activity / protein kinase A binding / AMPA glutamate receptor activity / response to lithium ion / Trafficking of GluR2-containing AMPA receptors / behavioral response to pain / AMPA glutamate receptor clustering / kainate selective glutamate receptor activity / cellular response to glycine / adenylate cyclase binding / immunoglobulin binding / AMPA glutamate receptor complex / asymmetric synapse / extracellularly glutamate-gated ion channel activity / conditioned place preference / response to electrical stimulus / regulation of receptor recycling / ionotropic glutamate receptor complex / G-protein alpha-subunit binding / glutamate receptor binding / Unblocking of NMDA receptors, glutamate binding and activation / positive regulation of synaptic transmission / long-term memory / regulation of synaptic transmission, glutamatergic / postsynaptic density, intracellular component / neuronal action potential / response to fungicide / synapse assembly / regulation of long-term synaptic depression / cytoskeletal protein binding / glutamate-gated receptor activity / extracellular ligand-gated monoatomic ion channel activity / cellular response to brain-derived neurotrophic factor stimulus / glutamate-gated calcium ion channel activity / presynaptic active zone membrane / somatodendritic compartment / dendrite membrane / ionotropic glutamate receptor binding / excitatory synapse / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / ionotropic glutamate receptor signaling pathway / dendrite cytoplasm / positive regulation of excitatory postsynaptic potential / synaptic membrane / dendritic shaft / SNARE binding / response to cocaine / PDZ domain binding / synaptic transmission, glutamatergic / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / protein tetramerization / cellular response to amino acid stimulus / response to nutrient levels / neuromuscular junction / establishment of protein localization / recycling endosome / regulation of synaptic plasticity / cerebral cortex development / response to peptide hormone / postsynaptic density membrane / modulation of chemical synaptic transmission / receptor internalization / cellular response to growth factor stimulus / small GTPase binding / response to toxic substance / Schaffer collateral - CA1 synapse / recycling endosome membrane / terminal bouton 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: 3.4 Å | |||||||||
データ登録者 | Zhang, D. / Watson, J.F. / Matthews, P.M. / Cais, O. / Greger, I.H. | |||||||||
| 資金援助 | 2件
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引用 | ジャーナル: Nature / 年: 2021タイトル: Gating and modulation of a hetero-octameric AMPA glutamate receptor. 著者: Danyang Zhang / Jake F Watson / Peter M Matthews / Ondrej Cais / Ingo H Greger / ![]() 要旨: AMPA receptors (AMPARs) mediate the majority of excitatory transmission in the brain and enable the synaptic plasticity that underlies learning. A diverse array of AMPAR signalling complexes are ...AMPA receptors (AMPARs) mediate the majority of excitatory transmission in the brain and enable the synaptic plasticity that underlies learning. A diverse array of AMPAR signalling complexes are established by receptor auxiliary subunits, which associate with the AMPAR in various combinations to modulate trafficking, gating and synaptic strength. However, their mechanisms of action are poorly understood. Here we determine cryo-electron microscopy structures of the heteromeric GluA1-GluA2 receptor assembled with both TARP-γ8 and CNIH2, the predominant AMPAR complex in the forebrain, in both resting and active states. Two TARP-γ8 and two CNIH2 subunits insert at distinct sites beneath the ligand-binding domains of the receptor, with site-specific lipids shaping each interaction and affecting the gating regulation of the AMPARs. Activation of the receptor leads to asymmetry between GluA1 and GluA2 along the ion conduction path and an outward expansion of the channel triggers counter-rotations of both auxiliary subunit pairs, promoting the active-state conformation. In addition, both TARP-γ8 and CNIH2 pivot towards the pore exit upon activation, extending their reach for cytoplasmic receptor elements. CNIH2 achieves this through its uniquely extended M2 helix, which has transformed this endoplasmic reticulum-export factor into a powerful AMPAR modulator that is capable of providing hippocampal pyramidal neurons with their integrative synaptic properties. | |||||||||
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構造の表示
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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 | 7occ.cif.gz | 306.3 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb7occ.ent.gz | 217.3 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 7occ.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/oc/7occ ftp://data.pdbj.org/pub/pdb/validation_reports/oc/7occ | 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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| 1 | ![]()
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| 2 | ![]()
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要素
| #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#3: 多糖 | #4: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose #5: 糖 | ChemComp-NAG / 研究の焦点であるリガンドがあるか | N | 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: GluA1/A2 heterotertramer in complex with auxiliary subunits TARP gamma 8 and CNIH2 タイプ: COMPLEX / Entity ID: #1-#2 / 由来: RECOMBINANT |
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| 分子量 | 実験値: NO |
| 由来(天然) | 生物種: ![]() |
| 由来(組換発現) | 生物種: Homo sapiens (ヒト) |
| 緩衝液 | pH: 8 |
| 試料 | 濃度: 3 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: Purified protein was incubated with 100 uM NBQX for at least 30 min on ice before freezing. |
| 急速凍結 | 凍結剤: ETHANE |
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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 |
| 撮影 | 電子線照射量: 50 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
| EMソフトウェア |
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||
| 3次元再構成 | 解像度: 3.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 228721 / 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: 6QKZ Accession code: 6QKZ / Source name: PDB / タイプ: experimental model |
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Homo sapiens (ヒト)


