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データを開く
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基本情報
| 登録情報 | ![]() | |||||||||
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| タイトル | Cryo-EM structure of GPR4 complexed with miniGs/q in pH6.8 | |||||||||
マップデータ | ||||||||||
試料 |
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キーワード | GPCR / Proton Sensing / G Protein / GPR4 / SIGNALING PROTEIN | |||||||||
| 機能・相同性 | 機能・相同性情報glomerular mesangial cell development / Class A/1 (Rhodopsin-like receptors) / regulation of vascular permeability / angiogenesis involved in wound healing / response to acidic pH / positive regulation of Rho protein signal transduction / 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 ...glomerular mesangial cell development / Class A/1 (Rhodopsin-like receptors) / regulation of vascular permeability / angiogenesis involved in wound healing / response to acidic pH / positive regulation of Rho protein signal transduction / 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 / regulation of cell adhesion / 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 / negative regulation of angiogenesis / 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 / 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 / positive regulation of inflammatory response / 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 / cell population proliferation / Extra-nuclear estrogen signaling / G protein-coupled receptor signaling pathway / lysosomal membrane / GTPase activity / synapse / GTP binding / protein-containing complex binding / signal transduction / extracellular exosome / membrane 類似検索 - 分子機能 | |||||||||
| 生物種 | Homo sapiens (ヒト) | |||||||||
| 手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.67 Å | |||||||||
データ登録者 | Yue XL / Wu LJ / Hua T / Liu ZJ | |||||||||
| 資金援助 | 1件
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引用 | ジャーナル: Cell Res / 年: 2025タイトル: Structural basis of stepwise proton sensing-mediated GPCR activation. 著者: Xiaolei Yue / Li Peng / Shenhui Liu / Bingjie Zhang / Xiaodan Zhang / Hao Chang / Yuan Pei / Xiaoting Li / Junlin Liu / Wenqing Shui / Lijie Wu / Huji Xu / Zhi-Jie Liu / Tian Hua / ![]() 要旨: The regulation of pH homeostasis is crucial in many biological processes vital for survival, growth, and function of life. The pH-sensing G protein-coupled receptors (GPCRs), including GPR4, GPR65 ...The regulation of pH homeostasis is crucial in many biological processes vital for survival, growth, and function of life. The pH-sensing G protein-coupled receptors (GPCRs), including GPR4, GPR65 and GPR68, play a pivotal role in detecting changes in extracellular proton concentrations, impacting both physiological and pathological states. However, comprehensive understanding of the proton sensing mechanism is still elusive. Here, we determined the cryo-electron microscopy structures of GPR4 and GPR65 in various activation states across different pH levels, coupled with G, G or G proteins, as well as a small molecule NE52-QQ57-bound inactive GPR4 structure. These structures reveal the dynamic nature of the extracellular loop 2 and its signature conformations in different receptor states, and disclose the proton sensing mechanism mediated by networks of extracellular histidine and carboxylic acid residues. Notably, we unexpectedly captured partially active intermediate states of both GPR4-G and GPR4-G complexes, and identified a unique allosteric binding site for NE52-QQ57 in GPR4. By integrating prior investigations with our structural analysis and mutagenesis data, we propose a detailed atomic model for stepwise proton sensation and GPCR activation. These insights may pave the way for the development of selective ligands and targeted therapeutic interventions for pH sensing-relevant diseases. | |||||||||
| 履歴 |
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構造の表示
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ダウンロードとリンク
-EMDBアーカイブ
| マップデータ | emd_61441.map.gz | 57.4 MB | EMDBマップデータ形式 | |
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| ヘッダ (付随情報) | emd-61441-v30.xml emd-61441.xml | 19.8 KB 19.8 KB | 表示 表示 | EMDBヘッダ |
| FSC (解像度算出) | emd_61441_fsc.xml | 8.4 KB | 表示 | FSCデータファイル |
| 画像 | emd_61441.png | 68.7 KB | ||
| Filedesc metadata | emd-61441.cif.gz | 6.6 KB | ||
| その他 | emd_61441_half_map_1.map.gz emd_61441_half_map_2.map.gz | 59.5 MB 59.5 MB | ||
| アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-61441 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-61441 | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 9jfvMC ![]() 8zceC ![]() 8zcfC ![]() 9jftC ![]() 9jfuC ![]() 9jfwC ![]() 9jfxC ![]() 9jfzC ![]() 9jhpC ![]() 9lgmC M: このマップから作成された原子モデル 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
| EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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| 「今月の分子」の関連する項目 |
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マップ
| ファイル | ダウンロード / ファイル: emd_61441.map.gz / 形式: CCP4 / 大きさ: 64 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| 投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||
| ボクセルのサイズ | X=Y=Z: 1.2 Å | ||||||||||||||||||||||||||||||||||||
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| 対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
| 詳細 | EMDB XML:
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-添付データ
-ハーフマップ: #2
| ファイル | emd_61441_half_map_1.map | ||||||||||||
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| 投影像・断面図 |
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| 密度ヒストグラム |
-ハーフマップ: #1
| ファイル | emd_61441_half_map_2.map | ||||||||||||
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| 投影像・断面図 |
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| 密度ヒストグラム |
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試料の構成要素
-全体 : gpr4-gq
| 全体 | 名称: gpr4-gq |
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| 要素 |
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-超分子 #1: gpr4-gq
| 超分子 | 名称: gpr4-gq / タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
-分子 #1: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short
| 分子 | 名称: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short タイプ: protein_or_peptide / ID: 1 / コピー数: 1 / 光学異性体: LEVO |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 分子量 | 理論値: 30.59551 KDa |
| 組換発現 | 生物種: ![]() |
| 配列 | 文字列: MHHHHHHENL YFQGNSKTED QRNEEKAQRE ANKKIEKQLQ KDKQVYRATH RLLLLGADNS GKSTIVKQMR ILHGGSGGSG GTSGIFETK FQVDKVNFHM FDVGGQRDER RKWIQCFNDV TAIIFVVDSS DYNRLQEALN LFKSIWNNRW LRTISVILFL N KQDLLAEK ...文字列: MHHHHHHENL YFQGNSKTED QRNEEKAQRE ANKKIEKQLQ KDKQVYRATH RLLLLGADNS GKSTIVKQMR ILHGGSGGSG GTSGIFETK FQVDKVNFHM FDVGGQRDER RKWIQCFNDV TAIIFVVDSS DYNRLQEALN LFKSIWNNRW LRTISVILFL N KQDLLAEK VLAGKSKIED YFPEFARYTT PEDATPEPGE DPRVTRAKYF IRDEFLRIST ASGDGRHYCY PHFTCAVDTE NA RRIFNDC KDIILQMNLR EYNLV UniProtKB: Guanine nucleotide-binding protein G(s) subunit alpha isoforms short, Guanine nucleotide-binding protein G(s) subunit alpha isoforms short |
-分子 #2: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1
| 分子 | 名称: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 タイプ: protein_or_peptide / ID: 2 / コピー数: 1 / 光学異性体: LEVO |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 分子量 | 理論値: 38.045629 KDa |
| 組換発現 | 生物種: ![]() |
| 配列 | 文字列: IGRARGFSEL DQLRQEAEQL KNQIRDARKA CADATLSQIT NNIDPVGRIQ MRTRRTLRGH LAKIYAMHWG TDSRLLVSAS QDGKLIIWD SYTTNKVHAI PLRSSWVMTC AYAPSGNYVA CGGLDNICSI YNLKTREGNV RVSRELAGHT GYLSCCRFLD D NQIVTSSG ...文字列: IGRARGFSEL DQLRQEAEQL KNQIRDARKA CADATLSQIT NNIDPVGRIQ MRTRRTLRGH LAKIYAMHWG TDSRLLVSAS QDGKLIIWD SYTTNKVHAI PLRSSWVMTC AYAPSGNYVA CGGLDNICSI YNLKTREGNV RVSRELAGHT GYLSCCRFLD D NQIVTSSG DTTCALWDIE TGQQTTTFTG HTGDVMSLSL APDTRLFVSG ACDASAKLWD VREGMCRQTF TGHESDINAI CF FPNGNAF ATGSDDATCR LFDLRADQEL MTYSHDNIIC GITSVSFSKS GRLLLAGYDD FNCNVWDALK ADRAGVLAGH DNR VSCLGV TDDGMAVATG SWDSFLKIWN UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(T) subunit beta-1 |
-分子 #3: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2
| 分子 | 名称: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 タイプ: protein_or_peptide / ID: 3 / コピー数: 1 / 光学異性体: LEVO |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 分子量 | 理論値: 7.861143 KDa |
| 組換発現 | 生物種: ![]() |
| 配列 | 文字列: MASNNTASIA QARKLVEQLK MEANIDRIKV SKAAADLMAY CEAHAKEDPL LTPVPASENP FREKKFFCAI L UniProtKB: Guanine nucleotide-binding protein G(I)/G(S)/G(O) subunit gamma-2 |
-分子 #4: G-protein coupled receptor 4
| 分子 | 名称: G-protein coupled receptor 4 / タイプ: protein_or_peptide / ID: 4 / コピー数: 1 / 光学異性体: LEVO |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 分子量 | 理論値: 42.688301 KDa |
| 組換発現 | 生物種: ![]() |
| 配列 | 文字列: MGNHTWEGCH VDSRVDHLFP PSLYIFVIGV GLPTNCLALW AAYRQVQQRN ELGVYLMNLS IADLLYICTL PLWVDYFLHH DNWIHGPGS CKLFGFIFYT NIYISIAFLC CISVDRYLAV AHPLRFARLR RVKTAVAVSS VVWATELGAN SAPLFHDELF R DRYNHTFC ...文字列: MGNHTWEGCH VDSRVDHLFP PSLYIFVIGV GLPTNCLALW AAYRQVQQRN ELGVYLMNLS IADLLYICTL PLWVDYFLHH DNWIHGPGS CKLFGFIFYT NIYISIAFLC CISVDRYLAV AHPLRFARLR RVKTAVAVSS VVWATELGAN SAPLFHDELF R DRYNHTFC FEKFPMEGWV AWMNLYRVFV GFLFPWALML LSYRGILRAV RGSVSTERQE KAKIKRLALS LIAIVLVCFA PY HVLLLSR SAIYLGRPWD CGFEERVFSA YHSSLAFTSL NCVADPILYC LVNEGARSDV AKALHNLLRF LASDKPQEMA NAS LTLETP LTSKRNSTAK AMTGSWAATP PSQGDQVQEF LEVLFQGPHH HHHHHHHH UniProtKB: G-protein coupled receptor 4 |
-実験情報
-構造解析
| 手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
| 試料の集合状態 | particle |
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試料調製
| 緩衝液 | pH: 6.8 |
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| 凍結 | 凍結剤: ETHANE |
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電子顕微鏡法
| 顕微鏡 | FEI TALOS ARCTICA |
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| 撮影 | フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 平均電子線量: 60.0 e/Å2 |
| 電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
| 電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2.2 µm / 最小 デフォーカス(公称値): 1.2 µm |
| 実験機器 | ![]() モデル: Talos Arctica / 画像提供: FEI Company |
ムービー
コントローラー
万見について




キーワード
Homo sapiens (ヒト)
データ登録者
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Z (Sec.)
Y (Row.)
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解析
FIELD EMISSION GUN

