prostaglandin J receptor activity / prostaglandin D receptor activity / Prostanoid ligand receptors / adenosine metabolic process / cellular response to prostaglandin D stimulus / male sex determination / sleep / mast cell degranulation / electron transport chain / positive regulation of cytosolic calcium ion concentration ...prostaglandin J receptor activity / prostaglandin D receptor activity / Prostanoid ligand receptors / adenosine metabolic process / cellular response to prostaglandin D stimulus / male sex determination / sleep / mast cell degranulation / electron transport chain / positive regulation of cytosolic calcium ion concentration / G alpha (s) signalling events / periplasmic space / electron transfer activity / G protein-coupled receptor signaling pathway / inflammatory response / iron ion binding / heme binding / membrane / plasma membrane 類似検索 - 分子機能
National Natural Science Foundation of China (NSFC)
中国
引用
ジャーナル: Proc Natl Acad Sci U S A / 年: 2025 タイトル: Molecular basis for ligand recognition and receptor activation of the prostaglandin D2 receptor DP1. 著者: Jiuyin Xu / Yanli Wu / Youwei Xu / Yang Li / Xinheng He / Heng Zhang / James Jiqi Wang / Jingjing Hou / Junrui Li / Wen Hu / Kai Wu / Qingning Yuan / Canrong Wu / H Eric Xu / 要旨: The prostaglandin D2 receptor 1 (DP1), a rhodopsin-like Class A GPCR, orchestrates critical physiological and pathological processes, ranging from sleep regulation to inflammatory responses and ...The prostaglandin D2 receptor 1 (DP1), a rhodopsin-like Class A GPCR, orchestrates critical physiological and pathological processes, ranging from sleep regulation to inflammatory responses and cardiovascular function. Despite its therapeutic significance, structural insights into DP1 activation mechanisms have remained elusive. Here, using cryoelectron microscopy (cryo-EM), we determined high-resolution structures of human DP1 in both inactive and active states, with the latter captured in complex with its endogenous agonist PGD2 or the synthetic agonist BW245C, bound to the stimulatory G protein, Gs. Our structures, coupled with functional and mutagenesis studies, unveiled unique structural features of DP1, including an alternative activation mechanism, ligand-selectivity determinants, and G protein coupling characteristics. These molecular insights provide a rational framework for designing selective DP1-targeted therapeutics, both agonists and antagonists, with enhanced specificity and reduced off-target effects, opening broad avenues for treating DP1-associated disorders.