+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7ejx | |||||||||
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タイトル | Structure of the GPR88-Gi1 signaling complex bound to a synthetic ligand | |||||||||
要素 |
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キーワード | MEMBRANE PROTEIN / GPR88 / signaling complex / cryo-EM | |||||||||
機能・相同性 | 機能・相同性情報 motor learning / G protein-coupled photoreceptor activity / cellular response to light stimulus / beta2-adrenergic receptor activity / ciliary membrane / cytoskeletal motor activity / phototransduction / neuromuscular process controlling balance / neuronal action potential / T cell migration ...motor learning / G protein-coupled photoreceptor activity / cellular response to light stimulus / beta2-adrenergic receptor activity / ciliary membrane / cytoskeletal motor activity / phototransduction / neuromuscular process controlling balance / neuronal action potential / T cell migration / D2 dopamine receptor binding / Adenylate cyclase inhibitory pathway / positive regulation of protein localization to cell cortex / regulation of cAMP-mediated signaling / G protein-coupled serotonin receptor binding / cellular response to forskolin / regulation of mitotic spindle organization / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / Regulation of insulin secretion / locomotory behavior / G protein-coupled receptor binding / G-protein beta/gamma-subunit complex binding / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / cilium / G protein-coupled acetylcholine receptor signaling pathway / G-protein activation / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / Prostacyclin signalling through prostacyclin receptor / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / response to peptide hormone / G beta:gamma signalling through BTK / ADP signalling through P2Y purinoceptor 12 / Sensory perception of sweet, bitter, and umami (glutamate) taste / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / photoreceptor disc membrane / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / G alpha (z) signalling events / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / ADORA2B mediated anti-inflammatory cytokines production / cellular response to catecholamine stimulus / sensory perception of taste / ADP signalling through P2Y purinoceptor 1 / G beta:gamma signalling through PI3Kgamma / adenylate cyclase-activating dopamine receptor signaling pathway / Cooperation of PDCL (PhLP1) and TRiC/CCT in G-protein beta folding / GPER1 signaling / GDP binding / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / Inactivation, recovery and regulation of the phototransduction cascade / heterotrimeric G-protein complex / G alpha (12/13) signalling events / extracellular vesicle / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / GTPase binding / retina development in camera-type eye / Ca2+ pathway / cell cortex / phospholipase C-activating G protein-coupled receptor signaling pathway / midbody / G alpha (i) signalling events / fibroblast proliferation / G alpha (s) signalling events / 加水分解酵素; 酸無水物に作用; GTPに作用・細胞または細胞小器官の運動に関与 / G alpha (q) signalling events / Ras protein signal transduction / cell population proliferation / Extra-nuclear estrogen signaling / G protein-coupled receptor signaling pathway / lysosomal membrane / cell division / GTPase activity / centrosome / synapse / protein-containing complex binding / GTP binding / nucleolus / magnesium ion binding / signal transduction / extracellular exosome / nucleoplasm / membrane / nucleus / plasma membrane / cytosol / cytoplasm 類似検索 - 分子機能 | |||||||||
生物種 | Homo sapiens (ヒト) Mus musculus (ハツカネズミ) | |||||||||
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: 2.4 Å | |||||||||
データ登録者 | Xu, J. / Chen, G. / Liu, Z. / Du, Y. | |||||||||
資金援助 | 1件
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引用 | ジャーナル: Nat Commun / 年: 2022 タイトル: Activation and allosteric regulation of the orphan GPR88-Gi1 signaling complex. 著者: Geng Chen / Jun Xu / Asuka Inoue / Maximilian F Schmidt / Chen Bai / Qiuyuan Lu / Peter Gmeiner / Zheng Liu / Yang Du / 要旨: GPR88 is an orphan class A G-protein-coupled receptor that is highly expressed in the striatum and regulates diverse brain and behavioral functions. Here we present cryo-EM structures of the human ...GPR88 is an orphan class A G-protein-coupled receptor that is highly expressed in the striatum and regulates diverse brain and behavioral functions. Here we present cryo-EM structures of the human GPR88-Gi1 signaling complex with or without a synthetic agonist (1R, 2R)-2-PCCA. We show that (1R, 2R)-2-PCCA is an allosteric modulator binding to a herein identified pocket formed by the cytoplasmic ends of transmembrane segments 5, 6, and the extreme C terminus of the α5 helix of Gi1. We also identify an electron density in the extracellular orthosteric site that may represent a putative endogenous ligand of GPR88. These structures, together with mutagenesis studies and an inactive state model obtained from metadynamics simulations, reveal a unique activation mechanism for GPR88 with a set of distinctive structure features and a water-mediated polar network. Overall, our results provide a structural framework for understanding the ligand binding, activation and signaling mechanism of GPR88, and will facilitate the innovative drug discovery for neuropsychiatric disorders and for deorphanization of this receptor. | |||||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7ejx.cif.gz | 200.5 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7ejx.ent.gz | 157.3 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7ejx.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 | 7ejx_validation.pdf.gz | 1012.7 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7ejx_full_validation.pdf.gz | 1 MB | 表示 | |
XML形式データ | 7ejx_validation.xml.gz | 34.5 KB | 表示 | |
CIF形式データ | 7ejx_validation.cif.gz | 52.9 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/ej/7ejx ftp://data.pdbj.org/pub/pdb/validation_reports/ej/7ejx | HTTPS FTP |
-関連構造データ
関連構造データ | 31164MC 7wz4C 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 | 類似検索 - 機能・相同性F&H 検索 |
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
-Guanine nucleotide-binding protein ... , 3種, 3分子 ABG
#2: タンパク質 | 分子量: 40415.031 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: GNAI1 / 発現宿主: Trichoplusia ni (イラクサキンウワバ) / 参照: UniProt: P63096 |
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#3: タンパク質 | 分子量: 39286.891 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: GNB1 / 発現宿主: Trichoplusia ni (イラクサキンウワバ) / 参照: UniProt: P62873 |
#4: タンパク質 | 分子量: 7861.143 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: GNG2 / 発現宿主: Trichoplusia ni (イラクサキンウワバ) / 参照: UniProt: P59768 |
-タンパク質 / 抗体 , 2種, 2分子 RS
#1: タンパク質 | 分子量: 40295.945 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: GPR88, STRG 発現宿主: Spodoptera frugiperda (ツマジロクサヨトウ) 参照: UniProt: Q9GZN0 |
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#5: 抗体 | 分子量: 27784.896 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Mus musculus (ハツカネズミ) / 発現宿主: Trichoplusia ni (イラクサキンウワバ) |
-非ポリマー , 3種, 6分子
#6: 化合物 | ChemComp-J5F / ( | ||
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#7: 化合物 | #8: 水 | ChemComp-HOH / | |
-詳細
研究の焦点であるリガンドがあるか | 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 |
-試料調製
構成要素 |
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由来(天然) |
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由来(組換発現) |
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緩衝液 | pH: 7.5 | ||||||||||||||||||||||||
試料 | 包埋: YES / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||||||||||
EM embedding | Material: vitreous ice | ||||||||||||||||||||||||
急速凍結 | 凍結剤: ETHANE |
-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): 105000 X / 最大 デフォーカス(公称値): 1400 nm / 最小 デフォーカス(公称値): 1000 nm / Calibrated defocus min: 800 nm / 最大 デフォーカス(補正後): 2000 nm / Cs: 2.7 mm |
撮影 | 電子線照射量: 56 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
-解析
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
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3次元再構成 | 解像度: 2.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 988958 / 対称性のタイプ: POINT |