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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: 9ge3 | |||||||||||||||
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| タイトル | Structure of GPR55 in complex with G13 and endogenous lipid agonist lysophosphatidylinositol | |||||||||||||||
要素 |
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キーワード | MEMBRANE PROTEIN / G protein-coupled receptor / GPCR / lipid agonist / cholesterol | |||||||||||||||
| 機能・相同性 | 機能・相同性情報D5 dopamine receptor binding / regulation of fibroblast migration / Rho-activating G protein-coupled receptor signaling pathway / cannabinoid receptor activity / Class A/1 (Rhodopsin-like receptors) / regulation of small GTPase mediated signal transduction / NRAGE signals death through JNK / branching involved in blood vessel morphogenesis / positive regulation of Rho protein signal transduction / negative regulation of osteoclast differentiation ...D5 dopamine receptor binding / regulation of fibroblast migration / Rho-activating G protein-coupled receptor signaling pathway / cannabinoid receptor activity / Class A/1 (Rhodopsin-like receptors) / regulation of small GTPase mediated signal transduction / NRAGE signals death through JNK / branching involved in blood vessel morphogenesis / positive regulation of Rho protein signal transduction / negative regulation of osteoclast differentiation / CDC42 GTPase cycle / regulation of postsynapse assembly / bone resorption / Rho protein signal transduction / RAC1 GTPase cycle / guanyl-nucleotide exchange factor activity / bioluminescence / generation of precursor metabolites and energy / brush border membrane / G protein-coupled receptor activity / platelet activation / adenylate cyclase-modulating G protein-coupled receptor signaling pathway / regulation of blood pressure / G-protein beta/gamma-subunit complex binding / 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 / G protein-coupled acetylcholine receptor signaling pathway / adenylate cyclase-activating G protein-coupled receptor signaling pathway / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through CDC42 / Glucagon signaling in metabolic regulation / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / ADP signalling through P2Y purinoceptor 12 / photoreceptor disc membrane / Sensory perception of sweet, bitter, and umami (glutamate) taste / Glucagon-type ligand receptors / Adrenaline,noradrenaline inhibits insulin secretion / Vasopressin regulates renal water homeostasis via Aquaporins / Glucagon-like Peptide-1 (GLP1) regulates insulin secretion / G alpha (z) signalling events / cellular response to catecholamine stimulus / ADP signalling through P2Y purinoceptor 1 / ADORA2B mediated anti-inflammatory cytokines production / 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 / melanosome / GPER1 signaling / Inactivation, recovery and regulation of the phototransduction cascade / cellular response to prostaglandin E stimulus / G-protein beta-subunit binding / heterotrimeric G-protein complex / G alpha (12/13) signalling events / sensory perception of taste / extracellular vesicle / regulation of cell shape / signaling receptor complex adaptor activity / Thrombin signalling through proteinase activated receptors (PARs) / retina development in camera-type eye / G protein activity / GTPase binding / Ca2+ pathway / fibroblast proliferation / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / G alpha (i) signalling events / G alpha (s) signalling events / phospholipase C-activating G protein-coupled receptor signaling pathway / G alpha (q) signalling events / in utero embryonic development / Ras protein signal transduction / cell differentiation / Extra-nuclear estrogen signaling / cell population proliferation / positive regulation of ERK1 and ERK2 cascade / postsynapse / G protein-coupled receptor signaling pathway / lysosomal membrane / focal adhesion / GTPase activity / synapse / GTP binding / protein-containing complex binding / signal transduction / extracellular exosome / metal ion binding / nucleus / membrane / plasma membrane / cytoplasm / cytosol 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: 2.87 Å | |||||||||||||||
データ登録者 | Claff, T. / Ebenhoch, R. / Weichert, D. | |||||||||||||||
| 資金援助 | 1件
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引用 | ジャーナル: Nat Commun / 年: 2025タイトル: Structural basis for lipid-mediated activation of G protein-coupled receptor GPR55. 著者: Tobias Claff / Rebecca Ebenhoch / Jörg T Kley / Aniket Magarkar / Herbert Nar / Dietmar Weichert / ![]() 要旨: GPR55 is an orphan G protein-coupled receptor (GPCR) and represents a promising drug target for cancer, inflammation, and metabolic diseases. The endogenous activation of lipid GPCRs can be solely ...GPR55 is an orphan G protein-coupled receptor (GPCR) and represents a promising drug target for cancer, inflammation, and metabolic diseases. The endogenous activation of lipid GPCRs can be solely mediated by membrane components and different lipids have been proposed as endogenous activators of GPR55, such as cannabinoids and lysophosphatidylinositols. Here, we determine high-resolution cryo-electron microscopy structures of the activated GPR55 in complex with heterotrimeric G and two structurally diverse ligands: the putative endogenous agonist 1-palmitoyl-2-lysophosphatidylinositol (LPI) and the synthetic agonist ML184. These results reveal insights into ligand recognition at GPR55, G protein coupling and receptor activation. Notably, an orthosteric binding site opening towards the membrane is observed in both structures, enabling direct interaction of the agonists with membrane lipids. The structural observations are supported by mutagenesis and functional experiments employing G protein dissociation assays. These findings will be of importance for the structure-based development of drugs targeting GPR55. | |||||||||||||||
| 履歴 |
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構造の表示
| 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 | 9ge3.cif.gz | 239.2 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9ge3.ent.gz | 表示 | PDB形式 | |
| PDBx/mmJSON形式 | 9ge3.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 | 9ge3_validation.pdf.gz | 810.7 KB | 表示 | wwPDB検証レポート |
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| 文書・詳細版 | 9ge3_full_validation.pdf.gz | 824.9 KB | 表示 | |
| XML形式データ | 9ge3_validation.xml.gz | 35.1 KB | 表示 | |
| CIF形式データ | 9ge3_validation.cif.gz | 53.6 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/ge/9ge3 ftp://data.pdbj.org/pub/pdb/validation_reports/ge/9ge3 | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 51288MC ![]() 9ge2C 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 ( |
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| 類似構造データ | 類似検索 - 機能・相同性 F&H 検索 |
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リンク
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集合体
| 登録構造単位 | ![]()
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要素
-Guanine nucleotide-binding protein ... , 3種, 3分子 ABG
| #1: タンパク質 | 分子量: 26574.400 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: GNA13 / 発現宿主: Trichoplusia ni (イラクサキンウワバ) / 参照: UniProt: Q14344 |
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| #2: タンパク質 | 分子量: 39418.086 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: 8506.765 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 |
-抗体 / タンパク質 / 糖 , 3種, 3分子 FR

| #3: 抗体 | 分子量: 27068.225 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() Trichoplusia ni (イラクサキンウワバ) |
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| #5: タンパク質 | 分子量: 73124.812 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: GFP, GPR55 / 発現宿主: Trichoplusia ni (イラクサキンウワバ) / 参照: UniProt: P42212, UniProt: Q9Y2T6 |
| #7: 糖 | ChemComp-NAG / |
-非ポリマー , 2種, 7分子 
| #6: 化合物 | ChemComp-A1IKT / [( 分子量: 572.623 Da / 分子数: 1 / 由来タイプ: 合成 / 式: C25H49O12P / タイプ: SUBJECT OF INVESTIGATION |
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| #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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| 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 |
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試料調製
| 構成要素 |
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| 分子量 | 値: 0.18 MDa / 実験値: NO | ||||||||||||||||||||||||||||||
| 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: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||||||||||||||||
| 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: OTHER |
| 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): 3000 nm / 最小 デフォーカス(公称値): 800 nm |
| 撮影 | 電子線照射量: 40 e/Å2 フィルム・検出器のモデル: FEI FALCON IV (4k 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 | ||||||||||||||||||||||||
| 粒子像の選択 | 選択した粒子像数: 15173387 | ||||||||||||||||||||||||
| 対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 2.87 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 397853 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 拘束条件 |
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ムービー
コントローラー
万見について




Homo sapiens (ヒト)


引用









PDBj





























Trichoplusia ni (イラクサキンウワバ)
FIELD EMISSION GUN