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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: 9j31 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| タイトル | cryo-EM structure of zebrafish GPR4-Gs complex at pH 8.5 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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キーワード | SIGNALING PROTEIN/IMMUNE SYSTEM / GPCR / proton-sensing / G protein / SIGNALING PROTEIN-IMMUNE SYSTEM complex | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報response to acidic pH / adenylate cyclase-activating G protein-coupled bile acid receptor signaling pathway / adenylate cyclase-activating serotonin receptor signaling pathway / regulation of skeletal muscle contraction / PKA activation in glucagon signalling / hair follicle placode formation / developmental growth / intracellular transport / D1 dopamine receptor binding / vascular endothelial cell response to laminar fluid shear stress ...response to acidic pH / adenylate cyclase-activating G protein-coupled bile acid receptor signaling pathway / adenylate cyclase-activating serotonin receptor signaling pathway / regulation of skeletal muscle contraction / PKA activation in glucagon signalling / hair follicle placode formation / developmental growth / intracellular transport / D1 dopamine receptor binding / vascular endothelial cell response to laminar fluid shear stress / renal water homeostasis / activation of adenylate cyclase activity / Hedgehog 'off' state / cellular response to acidic pH / adenylate cyclase-activating adrenergic receptor signaling pathway / cellular response to glucagon stimulus / intracellular glucose homeostasis / positive regulation of insulin secretion involved in cellular response to glucose stimulus / adenylate cyclase activator activity / trans-Golgi network membrane / negative regulation of inflammatory response to antigenic stimulus / response to prostaglandin E / electron transport chain / bone development / platelet aggregation / G protein-coupled receptor activity / cognition / G-protein beta/gamma-subunit complex binding / Olfactory Signaling Pathway / Activation of the phototransduction cascade / G protein-coupled acetylcholine receptor signaling pathway / positive regulation of insulin secretion / G beta:gamma signalling through PLC beta / Presynaptic function of Kainate receptors / Thromboxane signalling through TP receptor / Activation of G protein gated Potassium channels / Inhibition of voltage gated Ca2+ channels via Gbeta/gamma subunits / G-protein activation / Glucagon signaling in metabolic regulation / G beta:gamma signalling through CDC42 / Prostacyclin signalling through prostacyclin receptor / G beta:gamma signalling through BTK / Synthesis, secretion, and inactivation of Glucagon-like Peptide-1 (GLP-1) / sensory perception of smell / photoreceptor disc membrane / ADP signalling through P2Y purinoceptor 12 / 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 / GPER1 signaling / cellular response to prostaglandin E stimulus / heterotrimeric G-protein complex / G-protein beta-subunit binding / G alpha (12/13) signalling events / positive regulation of cold-induced thermogenesis / Inactivation, recovery and regulation of the phototransduction cascade / extracellular vesicle / sensory perception of taste / adenylate cyclase-activating G protein-coupled receptor signaling pathway / Thrombin signalling through proteinase activated receptors (PARs) / signaling receptor complex adaptor activity / retina development in camera-type eye / GTPase binding / G protein activity / fibroblast proliferation / Ca2+ pathway / 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 / 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 / Ras protein signal transduction / periplasmic space / electron transfer activity / cell population proliferation / Extra-nuclear estrogen signaling / iron ion binding / G protein-coupled receptor signaling pathway / lysosomal membrane / GTPase activity / heme binding / synapse / GTP binding / protein-containing complex binding / signal transduction / extracellular exosome / membrane / metal ion binding / plasma membrane / cytoplasm 類似検索 - 分子機能 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 生物種 | Homo sapiens (ヒト)![]() ![]() ![]() synthetic construct (人工物) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 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: 3.05 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
データ登録者 | Ma, Y.T. / Tang, M.Y. / Song, G.J. / Ru, H. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 資金援助 | 中国, 1件
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引用 | ジャーナル: Nat Commun / 年: 2025タイトル: Cryo-EM structure of an activated GPR4-Gs signaling complex. 著者: Yitong Ma / Yijie Wang / Mengyuan Tang / Yuan Weng / Ying Chen / Yueming Xu / Shuxiao An / Yiran Wu / Suwen Zhao / Huanhuan Xu / Dali Li / Mingyao Liu / Weiqiang Lu / Heng Ru / Gaojie Song / ![]() 要旨: G protein-coupled receptor 4 (GPR4) belongs to the subfamily of proton-sensing GPCRs (psGPCRs), which detect pH changes in extracellular environment and regulate diverse physiological responses. GPR4 ...G protein-coupled receptor 4 (GPR4) belongs to the subfamily of proton-sensing GPCRs (psGPCRs), which detect pH changes in extracellular environment and regulate diverse physiological responses. GPR4 was found to be overactivated in acidic tumor microenvironment as well as inflammation sites, with a triad of acidic residues within the transmembrane domain identified as crucial for proton sensing. However, the 3D structure remains unknown, and the roles of other conserved residues within psGPCRs are not well understood. Here we report cryo-electron microscopy (cryo-EM) structures of active zebrafish GPR4 at both pH 6.5 and 8.5, each highlighting a distribution of histidine and acidic residues at the extracellular region. Cell-based assays show that these ionizable residues moderately influence the proton-sensing capacity of zebrafish GPR4, compared to the more significant effects of the triad residues. Furthermore, we reveal a cluster of aromatic residues within the orthosteric pocket that may propagate the signaling to the intercellular region via repacking the aromatic patch at the central region. This study provides a framework for future signaling and functional investigation of psGPCRs. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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 | 9j31.cif.gz | 246.6 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9j31.ent.gz | 187.7 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9j31.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
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/j3/9j31 ftp://data.pdbj.org/pub/pdb/validation_reports/j3/9j31 | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 61104MC ![]() 8zfzC C: 同じ文献を引用 ( M: このデータのモデリングに利用したマップデータ |
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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
| #1: タンパク質 | 分子量: 39728.426 Da / 分子数: 1 / 由来タイプ: 組換発現 詳細: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1, with C-terminal smBIT tag 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: GNB1発現宿主: ![]() 参照: UniProt: P62873 |
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| #2: 抗体 | 分子量: 31560.316 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() |
| #3: タンパク質 | 分子量: 28362.049 Da / 分子数: 1 Mutation: G49D, E50N, A249D, S252D, L272D, I372A, V375I, L63Y 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: GNAS, GNAS1, GSP発現宿主: ![]() 参照: UniProt: P63092 |
| #4: タンパク質 | 分子量: 72372.461 Da / 分子数: 1 / Mutation: M29W, H124I, R128L / 由来タイプ: 組換発現 詳細: GPR4 with N-terminal BRIL (from E. coli., density missed) protein and C-terminal lgBit tag (synthetic peptide, density missed) 由来: (組換発現) ![]() ![]() 遺伝子: cybC, gpr4 発現宿主: ![]() 参照: UniProt: P0ABE7, UniProt: E7FEL0 |
| #5: タンパク質 | 分子量: 7675.814 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: ![]() 参照: UniProt: P59768 |
| 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 | 名称: zGPR4-Gs complex / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT | ||||||||||||||||||||
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| 由来(天然) |
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| 由来(組換発現) | 生物種: ![]() | ||||||||||||||||||||
| 緩衝液 | pH: 8.5 詳細: 20 mM MES (pH 6.5), 100 mM NaCl, 2 mM MgCl2, 0.0025% (w/v) LMNG, and 0.0005% (w/v) CHS. | ||||||||||||||||||||
| 試料 | 濃度: 12 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES / 詳細: this complex was monodisperse | ||||||||||||||||||||
| 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: FLOOD BEAM |
| 電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2000 nm / 最小 デフォーカス(公称値): 1000 nm |
| 撮影 | 電子線照射量: 52 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 | 名称: PHENIX / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.05 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 314824 / 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)



中国, 1件
引用


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FIELD EMISSION GUN