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Publication Abstract from PubMed

Adhesion G protein-coupled receptors are elusive in terms of their structural information and ligands. Here, we solved the cryogenic-electron microscopy (cryo-EM) structure of apo-ADGRG2, an essential membrane receptor for maintaining male fertility, in complex with a G(s) trimer. Whereas the formations of two kinks were determinants of the active state, identification of a potential ligand-binding pocket in ADGRG2 facilitated the screening and identification of dehydroepiandrosterone (DHEA), dehydroepiandrosterone sulfate and deoxycorticosterone as potential ligands of ADGRG2. The cryo-EM structures of DHEA-ADGRG2-G(s) provided interaction details for DHEA within the seven transmembrane domains of ADGRG2. Collectively, our data provide a structural basis for the activation and signaling of ADGRG2, as well as characterization of steroid hormones as ADGRG2 ligands, which might be used as useful tools for further functional studies of the orphan ADGRG2.

Structures of the ADGRG2-G(s) complex in apo and ligand-bound forms.,Lin H, Xiao P, Bu RQ, Guo S, Yang Z, Yuan D, Zhu ZL, Zhang CX, He QT, Zhang C, Ping YQ, Zhao RJ, Ma CS, Liu CH, Zhang XN, Jiang D, Huang S, Xi YT, Zhang DL, Xue CY, Yang BS, Li JY, Lin HC, Zeng XH, Zhao H, Xu WM, Yi F, Liu Z, Sun JP, Yu X Nat Chem Biol. 2022 Nov;18(11):1196-1203. doi: 10.1038/s41589-022-01084-6. Epub , 2022 Aug 18. PMID:35982227^[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.