complex / agonist / calcium-sensing receptor / MEMBRANE PROTEIN
機能・相同性
機能・相同性情報
regulation of presynaptic membrane potential / bile acid secretion / chemosensory behavior / response to fibroblast growth factor / cellular response to peptide / cellular response to vitamin D / phosphatidylinositol-4,5-bisphosphate phospholipase C activity / Class C/3 (Metabotropic glutamate/pheromone receptors) / calcium ion import / positive regulation of positive chemotaxis ...regulation of presynaptic membrane potential / bile acid secretion / chemosensory behavior / response to fibroblast growth factor / cellular response to peptide / cellular response to vitamin D / phosphatidylinositol-4,5-bisphosphate phospholipase C activity / Class C/3 (Metabotropic glutamate/pheromone receptors) / calcium ion import / positive regulation of positive chemotaxis / fat pad development / cellular response to hepatocyte growth factor stimulus / amino acid binding / branching morphogenesis of an epithelial tube / positive regulation of calcium ion import / regulation of calcium ion transport / cellular response to low-density lipoprotein particle stimulus / anatomical structure morphogenesis / detection of calcium ion / positive regulation of vasoconstriction / JNK cascade / axon terminus / ossification / chloride transmembrane transport / response to ischemia / cellular response to glucose stimulus / G protein-coupled receptor activity / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway / positive regulation of insulin secretion / intracellular calcium ion homeostasis / vasodilation / integrin binding / presynaptic membrane / G alpha (i) signalling events / basolateral plasma membrane / phospholipase C-activating G protein-coupled receptor signaling pathway / cellular response to hypoxia / G alpha (q) signalling events / transmembrane transporter binding / positive regulation of ERK1 and ERK2 cascade / G protein-coupled receptor signaling pathway / apical plasma membrane / neuronal cell body / positive regulation of cell population proliferation / calcium ion binding / positive regulation of gene expression / protein kinase binding / glutamatergic synapse / cell surface / protein homodimerization activity / identical protein binding / plasma membrane 類似検索 - 分子機能
GPCR, family 3, extracellular calcium-sensing receptor-related / G-protein coupled receptors family 3 signature 1. / G-protein coupled receptors family 3 signature 2. / GPCR, family 3, nine cysteines domain / GPCR, family 3, nine cysteines domain superfamily / Nine Cysteines Domain of family 3 GPCR / G-protein coupled receptors family 3 signature 3. / GPCR, family 3, conserved site / GPCR, family 3 / G-protein coupled receptors family 3 profile. ...GPCR, family 3, extracellular calcium-sensing receptor-related / G-protein coupled receptors family 3 signature 1. / G-protein coupled receptors family 3 signature 2. / GPCR, family 3, nine cysteines domain / GPCR, family 3, nine cysteines domain superfamily / Nine Cysteines Domain of family 3 GPCR / G-protein coupled receptors family 3 signature 3. / GPCR, family 3, conserved site / GPCR, family 3 / G-protein coupled receptors family 3 profile. / GPCR family 3, C-terminal / 7 transmembrane sweet-taste receptor of 3 GCPR / Receptor, ligand binding region / Receptor family ligand binding region / Periplasmic binding protein-like I 類似検索 - ドメイン・相同性
ジャーナル: Sci Rep / 年: 2025 タイトル: Cryo-EM structure of the calcium-sensing receptor complexed with the kokumi substance γ-glutamyl-valyl-glycine. 著者: Hiroki Yamaguchi / Seiji Kitajima / Hiroshi Suzuki / Shota Suzuki / Kouki Nishikawa / Akiko Kamegawa / Yoshinori Fujiyoshi / Kazutoshi Takahashi / Uno Tagami / Yutaka Maruyama / Motonaka ...著者: Hiroki Yamaguchi / Seiji Kitajima / Hiroshi Suzuki / Shota Suzuki / Kouki Nishikawa / Akiko Kamegawa / Yoshinori Fujiyoshi / Kazutoshi Takahashi / Uno Tagami / Yutaka Maruyama / Motonaka Kuroda / Masayuki Sugiki / 要旨: Taste is a key element for food palatability and is strongly influenced by the five basic tastes and other taste sensations, such as fatty orosensation, and koku perception, which indicates taste ...Taste is a key element for food palatability and is strongly influenced by the five basic tastes and other taste sensations, such as fatty orosensation, and koku perception, which indicates taste complexity, mouthfulness and lastingness. This study focuses on the taste modifier γ-glutamyl-valyl-glycine (γ-EVG), a potent kokumi substance that enhances taste and koku perception by modulating the calcium-sensing receptor (CaSR). We used cryo-electron microscopy to determine the structure of the CaSR/γ-EVG complex at a resolution of 3.55 Å. Structural analysis revealed important interactions between γ-EVG and the CaSR, involving key residues, such as Pro39, Phe42, Arg66, Ser147, and Glu297. Mutagenesis experiments demonstrated the importance of these residues in peptide binding. Each γ-EVG residue contributed to its binding to the orthosteric ligand binding site of the CaSR. These findings elucidate the molecular basis of kokumi peptide recognition by the CaSR and contribute to a better understanding of positive allosteric modulators of the CaSR. In addition, this research provides valuable insights into the functionality of class C G-protein-coupled receptors in taste perception, potentially informing the development of new taste modifiers and advancing the field of food science.