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基本情報
登録情報 | ![]() | |||||||||
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タイトル | Native human GABAA receptor of beta2-alpha1-beta1-beta1-gamma2 assembly | |||||||||
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![]() | Ion channels / Heteropentamer / Receptor / Inhibitory. / MEMBRANE PROTEIN | |||||||||
機能・相同性 | ![]() G protein-coupled neurotransmitter receptor activity involved in regulation of presynaptic membrane potential / benzodiazepine receptor activity / inner ear receptor cell development / GABA receptor binding / GABA receptor complex / innervation / cellular response to histamine / GABA receptor activation / GABA-A receptor activity / GABA-gated chloride ion channel activity ...G protein-coupled neurotransmitter receptor activity involved in regulation of presynaptic membrane potential / benzodiazepine receptor activity / inner ear receptor cell development / GABA receptor binding / GABA receptor complex / innervation / cellular response to histamine / GABA receptor activation / GABA-A receptor activity / GABA-gated chloride ion channel activity / GABA-A receptor complex / inhibitory synapse assembly / ovulation cycle / gamma-aminobutyric acid signaling pathway / postsynaptic specialization membrane / ligand-gated monoatomic ion channel activity / synaptic transmission, GABAergic / cochlea development / chloride channel activity / central nervous system neuron development / adult behavior / Signaling by ERBB4 / chloride channel complex / monoatomic ion transport / presynaptic active zone membrane / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / dendrite membrane / cytoplasmic vesicle membrane / chloride transmembrane transport / response to progesterone / post-embryonic development / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / GABA-ergic synapse / Schaffer collateral - CA1 synapse / response to toxic substance / nuclear envelope / chemical synaptic transmission / dendritic spine / postsynaptic membrane / postsynapse / axon / dendrite / signal transduction / extracellular exosome / plasma membrane 類似検索 - 分子機能 | |||||||||
生物種 | ![]() ![]() ![]() | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.36 Å | |||||||||
![]() | Zhou J / Hibbs RE / Noviello CM | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Resolving native GABA receptor structures from the human brain. 著者: Jia Zhou / Colleen M Noviello / Jinfeng Teng / Haley Moore / Bradley Lega / Ryan E Hibbs / ![]() 要旨: Type A GABA (γ-aminobutyric acid) receptors (GABA receptors) mediate most fast inhibitory signalling in the brain and are targets for drugs that treat epilepsy, anxiety, depression and insomnia and ...Type A GABA (γ-aminobutyric acid) receptors (GABA receptors) mediate most fast inhibitory signalling in the brain and are targets for drugs that treat epilepsy, anxiety, depression and insomnia and for anaesthetics. These receptors comprise a complex array of 19 related subunits, which form pentameric ligand-gated ion channels. The composition and structure of native GABA receptors in the human brain have been inferred from subunit localization in tissue, functional measurements and structural analysis from recombinant expression and in mice. However, the arrangements of subunits that co-assemble physiologically in native human GABA receptors remain unknown. Here we isolated α1 subunit-containing GABA receptors from human patients with epilepsy. Using cryo-electron microscopy, we defined a set of 12 native subunit assemblies and their 3D structures. We address inconsistencies between previous native and recombinant approaches, and reveal details of previously undefined subunit interfaces. Drug-like densities in a subset of these interfaces led us to uncover unexpected activity on the GABA receptor of antiepileptic drugs and resulted in localization of one of these drugs to the benzodiazepine-binding site. Proteomics and further structural analysis suggest interactions with the auxiliary subunits neuroligin 2 and GARLH4, which localize and modulate GABA receptors at inhibitory synapses. This work provides a structural foundation for understanding GABA receptor signalling and targeted pharmacology in the human brain. | |||||||||
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構造の表示
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-EMDBアーカイブ
マップデータ | ![]() | 59.5 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 27.1 KB 27.1 KB | 表示 表示 | ![]() |
FSC (解像度算出) | ![]() | 8.4 KB | 表示 | ![]() |
画像 | ![]() | 108.8 KB | ||
マスクデータ | ![]() | 64 MB | ![]() | |
Filedesc metadata | ![]() | 8.1 KB | ||
その他 | ![]() ![]() ![]() | 32.1 MB 59.3 MB 59.3 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 9cxdMC ![]() 9crsC ![]() 9crvC ![]() 9csbC ![]() 9ct0C ![]() 9ctjC ![]() 9ctpC ![]() 9ctvC ![]() 9cx7C ![]() 9cxaC ![]() 9cxbC ![]() 9cxcC ![]() 9drxC M: このマップから作成された原子モデル C: 同じ文献を引用 ( |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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リンク
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
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投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 0.935 Å | ||||||||||||||||||||||||||||||||||||
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対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
-マスク #1
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密度ヒストグラム |
-追加マップ: #1
ファイル | emd_45986_additional_1.map | ||||||||||||
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密度ヒストグラム |
-ハーフマップ: #1
ファイル | emd_45986_half_map_1.map | ||||||||||||
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密度ヒストグラム |
-ハーフマップ: #2
ファイル | emd_45986_half_map_2.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
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試料の構成要素
+全体 : Native GABAA receptor from human brain
+超分子 #1: Native GABAA receptor from human brain
+分子 #1: Gamma-aminobutyric acid receptor subunit beta-2
+分子 #2: Gamma-aminobutyric acid receptor subunit alpha-1
+分子 #3: Gamma-aminobutyric acid receptor subunit beta-1
+分子 #4: Gamma-aminobutyric acid receptor subunit gamma-2
+分子 #5: Kappa Fab_1F4 Light Chain
+分子 #6: IgG2b Fab_1F4 Heavy Chain
+分子 #9: GAMMA-AMINO-BUTANOIC ACID
+分子 #10: [(2R)-2-octanoyloxy-3-[oxidanyl-[(1R,2R,3S,4R,5R,6S)-2,3,6-tris(o...
+分子 #11: 2-acetamido-2-deoxy-beta-D-glucopyranose
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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試料調製
緩衝液 | pH: 8 |
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凍結 | 凍結剤: ETHANE / 装置: FEI VITROBOT MARK IV / 詳細: 3.5 s Blot.. |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) 平均電子線量: 50.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2.2 µm / 最小 デフォーカス(公称値): 1.0 µm |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |