+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 6dw0 | ||||||||||||
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タイトル | Cryo-EM structure of the benzodiazepine-sensitive alpha1beta1gamma2S tri-heteromeric GABAA receptor in complex with GABA (Whole map) | ||||||||||||
要素 | (Gamma-aminobutyric acid receptor subunit ...) x 3 | ||||||||||||
キーワード | MEMBRANE PROTEIN / Neurotransmission / GABA Receptors / GABA / Cys Loop Receptors / Ion Channel | ||||||||||||
機能・相同性 | 機能・相同性情報 GABA receptor activation / inhibitory extracellular ligand-gated monoatomic ion channel activity / diazepam binding / response to anesthetic / G protein-coupled neurotransmitter receptor activity involved in regulation of presynaptic membrane potential / chemical synaptic transmission, postsynaptic / inhibitory synapse / GABA receptor complex / organic cyclic compound binding / cellular response to histamine ...GABA receptor activation / inhibitory extracellular ligand-gated monoatomic ion channel activity / diazepam binding / response to anesthetic / G protein-coupled neurotransmitter receptor activity involved in regulation of presynaptic membrane potential / chemical synaptic transmission, postsynaptic / inhibitory synapse / GABA receptor complex / organic cyclic compound binding / cellular response to histamine / response to auditory stimulus / monoatomic anion channel activity / GABA-A receptor activity / GABA-gated chloride ion channel activity / GABA-A receptor complex / GABA receptor binding / inhibitory synapse assembly / synaptic transmission, GABAergic / gamma-aminobutyric acid signaling pathway / ovulation cycle / chloride transport / postsynaptic specialization membrane / cellular response to zinc ion / neurotransmitter receptor activity / chloride channel activity / adult behavior / central nervous system neuron development / chloride channel complex / ligand-gated monoatomic ion channel activity / regulation of postsynaptic membrane potential / transmembrane transporter complex / GABA-ergic synapse / monoatomic ion transport / presynaptic active zone membrane / chloride transmembrane transport / dendrite membrane / ligand-gated monoatomic ion channel activity involved in regulation of presynaptic membrane potential / post-embryonic development / response to progesterone / transmitter-gated monoatomic ion channel activity involved in regulation of postsynaptic membrane potential / cytoplasmic vesicle membrane / Schaffer collateral - CA1 synapse / response to toxic substance / nuclear envelope / monoatomic ion transmembrane transport / chemical synaptic transmission / response to ethanol / postsynapse / receptor complex / neuron projection / axon / glutamatergic synapse / dendrite / synapse / cell surface / plasma membrane 類似検索 - 分子機能 | ||||||||||||
生物種 | Rattus norvegicus (ドブネズミ) | ||||||||||||
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: 3.8 Å | ||||||||||||
データ登録者 | Phulera, S. / Zhu, H. / Yu, J. / Yoshioka, C. / Gouaux, E. | ||||||||||||
資金援助 | 米国, 2件
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引用 | ジャーナル: Elife / 年: 2018 タイトル: Cryo-EM structure of the benzodiazepine-sensitive α1β1γ2S tri-heteromeric GABA receptor in complex with GABA. 著者: Swastik Phulera / Hongtao Zhu / Jie Yu / Derek P Claxton / Nate Yoder / Craig Yoshioka / Eric Gouaux / 要旨: Fast inhibitory neurotransmission in the mammalian nervous system is largely mediated by GABA receptors, chloride-selective members of the superfamily of pentameric Cys-loop receptors. Native GABA ...Fast inhibitory neurotransmission in the mammalian nervous system is largely mediated by GABA receptors, chloride-selective members of the superfamily of pentameric Cys-loop receptors. Native GABA receptors are heteromeric assemblies sensitive to many important drugs, from sedatives to anesthetics and anticonvulsant agents, with mutant forms of GABA receptors implicated in multiple neurological diseases. Despite the profound importance of heteromeric GABA receptors in neuroscience and medicine, they have proven recalcitrant to structure determination. Here we present the structure of a tri-heteromeric α1β1γ2S GABA receptor in complex with GABA, determined by single particle cryo-EM at 3.1-3.8 Å resolution, elucidating molecular principles of receptor assembly and agonist binding. Remarkable N-linked glycosylation on the α1 subunit occludes the extracellular vestibule of the ion channel and is poised to modulate receptor assembly and perhaps ion channel gating. Our work provides a pathway to structural studies of heteromeric GABA receptors and a framework for rational design of novel therapeutic agents. | ||||||||||||
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: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 6dw0.cif.gz | 289.2 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb6dw0.ent.gz | 223.5 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 6dw0.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
文書・要旨 | 6dw0_validation.pdf.gz | 1.3 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 6dw0_full_validation.pdf.gz | 1.3 MB | 表示 | |
XML形式データ | 6dw0_validation.xml.gz | 45.6 KB | 表示 | |
CIF形式データ | 6dw0_validation.cif.gz | 69.3 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/dw/6dw0 ftp://data.pdbj.org/pub/pdb/validation_reports/dw/6dw0 | HTTPS FTP |
-関連構造データ
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
-Gamma-aminobutyric acid receptor subunit ... , 3種, 5分子 DCAEB
#1: タンパク質 | 分子量: 56894.949 Da / 分子数: 1 / 断片: residues 63-361 / 由来タイプ: 組換発現 / 由来: (組換発現) Rattus norvegicus (ドブネズミ) / 遺伝子: Gabrg2 / 細胞株 (発現宿主): TSA201 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P18508 | ||
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#2: タンパク質 | 分子量: 46267.105 Da / 分子数: 2 / 断片: residues 39-334 / 由来タイプ: 組換発現 / 由来: (組換発現) Rattus norvegicus (ドブネズミ) / 遺伝子: Gabra1, Gabra-1 / 細胞株 (発現宿主): TSA201 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P62813 #3: タンパク質 | 分子量: 44333.012 Da / 分子数: 2 / 断片: residues 33-474 / 由来タイプ: 組換発現 / 由来: (組換発現) Rattus norvegicus (ドブネズミ) / 遺伝子: Gabrb1, Gabrb-1 / 細胞株 (発現宿主): TSA201 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P15431 |
-糖 , 4種, 6分子
#4: 多糖 | alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1- ...alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | ||
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#5: 多糖 | alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-3)-alpha-D- ...alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-3)-alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | ||
#6: 多糖 | #7: 多糖 | |
-非ポリマー , 1種, 3分子
#8: 化合物 |
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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 |
-試料調製
構成要素 | 名称: Triheteromeric alpha1-beta1-gamma2 GABAA receptor / タイプ: COMPLEX / 詳細: In complex with alpha1 specific Fab / Entity ID: #1-#3 / 由来: RECOMBINANT | |||||||||||||||||||||||||
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分子量 | 単位: KILODALTONS/NANOMETER / 実験値: NO | |||||||||||||||||||||||||
由来(天然) | 生物種: Rattus norvegicus (ドブネズミ) | |||||||||||||||||||||||||
由来(組換発現) | 生物種: Homo sapiens (ヒト) / 細胞: TSA201 | |||||||||||||||||||||||||
緩衝液 | pH: 7.3 | |||||||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 0.15 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | |||||||||||||||||||||||||
試料支持 | 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 IV / 凍結剤: ETHANE / 湿度: 100 % |
-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 / 倍率(公称値): 120000 X / 最大 デフォーカス(公称値): -2500 nm / 最小 デフォーカス(公称値): -1200 nm / Cs: 2.7 mm |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 平均露光時間: 40 sec. / 電子線照射量: 37 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: FEI FALCON III (4k x 4k) 撮影したグリッド数: 1 / 実像数: 1391 |
-解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.8 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 49417 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: FLEXIBLE FIT / 空間: REAL / Target criteria: 0.74 |