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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 / cellular response to ammonium ion / axonal spine / COPII-mediated vesicle transport / positive regulation of locomotion involved in locomotory behavior / positive regulation of membrane potential / response to sucrose / regulation of monoatomic ion transmembrane transport / myosin V binding / cellular response to L-glutamate ...Cargo concentration in the ER / cellular response to ammonium ion / axonal spine / COPII-mediated vesicle transport / positive regulation of locomotion involved in locomotory behavior / positive regulation of membrane potential / response to sucrose / regulation of monoatomic ion transmembrane transport / myosin V binding / cellular response to L-glutamate / neuron spine / Trafficking of AMPA receptors / proximal dendrite / long-term synaptic depression / response to arsenic-containing substance / cellular response to dsRNA / ligand-gated calcium channel activity / dendritic spine membrane / beta-2 adrenergic receptor binding / Synaptic adhesion-like molecules / cellular response to peptide hormone stimulus / regulation of synaptic plasticity by chemical substance / spine synapse / spinal cord development / dendritic spine neck / dendritic spine cytoplasm / dendritic spine head / cellular response to amine stimulus / peptide hormone receptor binding / response to psychosocial stress / response to morphine / Activation of AMPA receptors / ligand-gated monoatomic cation channel activity / perisynaptic space / behavioral response to pain / neuronal cell body membrane / Trafficking of GluR2-containing AMPA receptors / response to lithium ion / AMPA glutamate receptor activity / protein kinase A binding / AMPA glutamate receptor clustering / regulation of receptor recycling / kainate selective glutamate receptor activity / neuronal action potential / immunoglobulin binding / adenylate cyclase binding / AMPA glutamate receptor complex / response to electrical stimulus / extracellularly glutamate-gated ion channel activity / ionotropic glutamate receptor complex / cellular response to glycine / asymmetric synapse / Unblocking of NMDA receptors, glutamate binding and activation / G-protein alpha-subunit binding / glutamate receptor binding / positive regulation of synaptic transmission / conditioned place preference / long-term memory / regulation of synaptic transmission, glutamatergic / postsynaptic density, intracellular component / response to fungicide / cytoskeletal protein binding / extracellular ligand-gated monoatomic ion channel activity / glutamate-gated receptor activity / cellular response to brain-derived neurotrophic factor stimulus / regulation of long-term synaptic depression / synapse assembly / somatodendritic compartment / glutamate-gated calcium ion channel activity / presynaptic active zone membrane / ionotropic glutamate receptor binding / ionotropic glutamate receptor signaling pathway / cellular response to amino acid stimulus / dendrite cytoplasm / excitatory synapse / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / dendrite membrane / positive regulation of excitatory postsynaptic potential / dendritic shaft / SNARE binding / synaptic membrane / response to cocaine / PDZ domain binding / establishment of protein localization / synaptic transmission, glutamatergic / neuromuscular junction / protein tetramerization / long-term synaptic potentiation / receptor internalization / cerebral cortex development / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / regulation of synaptic plasticity / response to nutrient levels / cellular response to growth factor stimulus / response to toxic substance / recycling endosome / postsynaptic density membrane / modulation of chemical synaptic transmission / response to peptide hormone / Schaffer collateral - CA1 synapse 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)


