+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 6wiv | |||||||||||||||||||||
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タイトル | Structure of human GABA(B) receptor in an inactive state | |||||||||||||||||||||
要素 | (Gamma-aminobutyric acid type B receptor subunit ...) x 2 | |||||||||||||||||||||
キーワード | MEMBRANE PROTEIN / G protein coupled receptor (GPCR) / GABA / GABA(B) receptor / Class C GPCR / Phospholipids / Inhibitory neurotransmission. | |||||||||||||||||||||
機能・相同性 | 機能・相同性情報 G protein-coupled neurotransmitter receptor activity involved in regulation of postsynaptic membrane potential / GABA B receptor activation / G protein-coupled neurotransmitter receptor activity involved in regulation of presynaptic membrane potential / G protein-coupled GABA receptor complex / negative regulation of gamma-aminobutyric acid secretion / neuron-glial cell signaling / G protein-coupled GABA receptor activity / G protein-coupled receptor heterodimeric complex / negative regulation of epinephrine secretion / negative regulation of dopamine secretion ...G protein-coupled neurotransmitter receptor activity involved in regulation of postsynaptic membrane potential / GABA B receptor activation / G protein-coupled neurotransmitter receptor activity involved in regulation of presynaptic membrane potential / G protein-coupled GABA receptor complex / negative regulation of gamma-aminobutyric acid secretion / neuron-glial cell signaling / G protein-coupled GABA receptor activity / G protein-coupled receptor heterodimeric complex / negative regulation of epinephrine secretion / negative regulation of dopamine secretion / positive regulation of growth hormone secretion / extracellular matrix protein binding / GABA receptor complex / negative regulation of adenylate cyclase activity / Class C/3 (Metabotropic glutamate/pheromone receptors) / positive regulation of glutamate secretion / synaptic transmission, GABAergic / gamma-aminobutyric acid signaling pathway / negative regulation of synaptic transmission / axolemma / GABA-ergic synapse / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / dendritic shaft / response to nicotine / mitochondrial membrane / Schaffer collateral - CA1 synapse / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / osteoblast differentiation / transmembrane signaling receptor activity / synaptic vesicle / presynaptic membrane / G alpha (i) signalling events / chemical synaptic transmission / postsynaptic membrane / response to ethanol / dendritic spine / neuron projection / protein heterodimerization activity / G protein-coupled receptor signaling pathway / negative regulation of cell population proliferation / neuronal cell body / glutamatergic synapse / endoplasmic reticulum membrane / extracellular space / plasma membrane / cytoplasm 類似検索 - 分子機能 | |||||||||||||||||||||
生物種 | Homo sapiens (ヒト) | |||||||||||||||||||||
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: 3.3 Å | |||||||||||||||||||||
データ登録者 | Park, J. / Fu, Z. / Frangaj, A. / Liu, J. / Mosyak, L. / Shen, T. / Slavkovich, V.N. / Ray, K.M. / Taura, J. / Cao, B. ...Park, J. / Fu, Z. / Frangaj, A. / Liu, J. / Mosyak, L. / Shen, T. / Slavkovich, V.N. / Ray, K.M. / Taura, J. / Cao, B. / Geng, Y. / Zuo, H. / Kou, Y. / Grassucci, R. / Chen, S. / Liu, Z. / Lin, X. / Williams, J.P. / Rice, W.J. / Eng, E.T. / Huang, R.K. / Soni, R.K. / Kloss, B. / Yu, Z. / Javitch, J.A. / Hendrickson, W.A. / Slesinger, P.A. / Quick, M. / Graziano, J. / Yu, H. / Fiehn, O. / Clarke, O.B. / Frank, J. / Fan, Q.R. | |||||||||||||||||||||
資金援助 | 米国, 6件
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引用 | ジャーナル: Nature / 年: 2020 タイトル: Structure of human GABA receptor in an inactive state. 著者: Jinseo Park / Ziao Fu / Aurel Frangaj / Jonathan Liu / Lidia Mosyak / Tong Shen / Vesna N Slavkovich / Kimberly M Ray / Jaume Taura / Baohua Cao / Yong Geng / Hao Zuo / Yongjun Kou / Robert ...著者: Jinseo Park / Ziao Fu / Aurel Frangaj / Jonathan Liu / Lidia Mosyak / Tong Shen / Vesna N Slavkovich / Kimberly M Ray / Jaume Taura / Baohua Cao / Yong Geng / Hao Zuo / Yongjun Kou / Robert Grassucci / Shaoxia Chen / Zheng Liu / Xin Lin / Justin P Williams / William J Rice / Edward T Eng / Rick K Huang / Rajesh K Soni / Brian Kloss / Zhiheng Yu / Jonathan A Javitch / Wayne A Hendrickson / Paul A Slesinger / Matthias Quick / Joseph Graziano / Hongtao Yu / Oliver Fiehn / Oliver B Clarke / Joachim Frank / Qing R Fan / 要旨: The human GABA receptor-a member of the class C family of G-protein-coupled receptors (GPCRs)-mediates inhibitory neurotransmission and has been implicated in epilepsy, pain and addiction. A unique ...The human GABA receptor-a member of the class C family of G-protein-coupled receptors (GPCRs)-mediates inhibitory neurotransmission and has been implicated in epilepsy, pain and addiction. A unique GPCR that is known to require heterodimerization for function, the GABA receptor has two subunits, GABA and GABA, that are structurally homologous but perform distinct and complementary functions. GABA recognizes orthosteric ligands, while GABA couples with G proteins. Each subunit is characterized by an extracellular Venus flytrap (VFT) module, a descending peptide linker, a seven-helix transmembrane domain and a cytoplasmic tail. Although the VFT heterodimer structure has been resolved, the structure of the full-length receptor and its transmembrane signalling mechanism remain unknown. Here we present a near full-length structure of the GABA receptor, captured in an inactive state by cryo-electron microscopy. Our structure reveals several ligands that preassociate with the receptor, including two large endogenous phospholipids that are embedded within the transmembrane domains to maintain receptor integrity and modulate receptor function. We also identify a previously unknown heterodimer interface between transmembrane helices 3 and 5 of both subunits, which serves as a signature of the inactive conformation. A unique 'intersubunit latch' within this transmembrane interface maintains the inactive state, and its disruption leads to constitutive receptor activity. | |||||||||||||||||||||
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 | 6wiv.cif.gz | 267.6 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb6wiv.ent.gz | 208 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 6wiv.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 | 6wiv_validation.pdf.gz | 1.5 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 6wiv_full_validation.pdf.gz | 1.6 MB | 表示 | |
XML形式データ | 6wiv_validation.xml.gz | 48.3 KB | 表示 | |
CIF形式データ | 6wiv_validation.cif.gz | 70.1 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/wi/6wiv ftp://data.pdbj.org/pub/pdb/validation_reports/wi/6wiv | HTTPS FTP |
-関連構造データ
関連構造データ | 21685MC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 (文献) |
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類似構造データ | |
電子顕微鏡画像生データ | EMPIAR-10410 (タイトル: Structure of human GABA(B) receptor in an inactive state Data size: 854.1 Data #1: Unaligned multi-frame micrographs of GABA(B) receptor in the inactive state [micrographs - multiframe]) |
-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 type B receptor subunit ... , 2種, 2分子 AB
#1: タンパク質 | 分子量: 91585.867 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: GABBR1, GPRC3A / 細胞株 (発現宿主): HEK293 GnTl- / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q9UBS5 |
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#2: タンパク質 | 分子量: 93278.781 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: GABBR2, GPR51, GPRC3B / 細胞株 (発現宿主): HEK293 GnTl- / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: O75899 |
-糖 , 1種, 4分子
#3: 糖 | ChemComp-NAG / |
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-非ポリマー , 4種, 13分子
#4: 化合物 | ChemComp-CA / | ||
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#5: 化合物 | ChemComp-U3G / ( | ||
#6: 化合物 | ChemComp-CLR / #7: 化合物 | ChemComp-U3D / [( | |
-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 |
-試料調製
構成要素 | 名称: Heterodimer human GABA(B) receptor composed of GABA(B1b) and GABA(B2) subunits. タイプ: COMPLEX / Entity ID: #1-#2 / 由来: RECOMBINANT | |||||||||||||||||||||||||
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分子量 | 値: 0.193 MDa / 実験値: YES | |||||||||||||||||||||||||
由来(天然) | 生物種: Homo sapiens (ヒト) | |||||||||||||||||||||||||
由来(組換発現) | 生物種: Homo sapiens (ヒト) / 細胞: HEK 293 GnTI- / プラスミド: modified bacMam | |||||||||||||||||||||||||
緩衝液 | pH: 7.5 詳細: Solutions were made fresh from concentrated and filtered to avoid microbial contamination. | |||||||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 0.3 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES / 詳細: This sample was monodisperse | |||||||||||||||||||||||||
試料支持 | グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil R0.6/1 | |||||||||||||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE-PROPANE / 湿度: 100 % / 凍結前の試料温度: 277 K / 詳細: blot for 4 seconds before plunging |
-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 / 詳細: Preliminary grid screening was performed manually. |
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): 130000 X / 最大 デフォーカス(公称値): -2000 nm / 最小 デフォーカス(公称値): -500 nm / Cs: 2.7 mm / C2レンズ絞り径: 70 µm / アライメント法: COMA FREE |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER 最高温度: 100 K |
撮影 | 平均露光時間: 12 sec. / 電子線照射量: 85 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 撮影したグリッド数: 1 / 実像数: 3435 |
電子光学装置 | エネルギーフィルタースリット幅: 20 eV |
画像スキャン | 動画フレーム数/画像: 60 / 利用したフレーム数/画像: 1-60 |
-解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 1048241 | |||||||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | |||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 233737 / クラス平均像の数: 1 / 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 | |||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | 3D fitting-ID: 1 / Accession code: 4MQE / Initial refinement model-ID: 1 / PDB-ID: 4MQE / Source name: PDB / タイプ: experimental model
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精密化 | 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2 | |||||||||||||||||||||||||||||||||||||||||||||
原子変位パラメータ | Biso mean: 68.95 Å2 | |||||||||||||||||||||||||||||||||||||||||||||
拘束条件 |
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