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-Structure paper
| タイトル | Structural insights into the regulation of monomeric and dimeric apelin receptor. |
|---|---|
| ジャーナル・号・ページ | Nat Commun, Vol. 16, Issue 1, Page 310, Year 2025 |
| 掲載日 | 2025年1月2日 |
著者 | Yang Yue / Lier Liu / Lijie Wu / Chanjuan Xu / Man Na / Shenhui Liu / Yuxuan Liu / Fei Li / Junlin Liu / Songting Shi / Hui Lei / Minxuan Zhao / Tianjie Yang / Wei Ji / Arthur Wang / Michael A Hanson / Raymond C Stevens / Jianfeng Liu / Fei Xu / ![]() |
| PubMed 要旨 | The apelin receptor (APJR) emerges as a promising drug target for cardiovascular health and muscle regeneration. While prior research unveiled the structural versatility of APJR in coupling to Gi ...The apelin receptor (APJR) emerges as a promising drug target for cardiovascular health and muscle regeneration. While prior research unveiled the structural versatility of APJR in coupling to Gi proteins as a monomer or dimer, the dynamic regulation within the APJR dimer during activation remains poorly understood. In this study, we present the structures of the APJR dimer and monomer complexed with its endogenous ligand apelin-13. In the dimeric structure, apelin-13 binds exclusively to one protomer that is coupled with Gi proteins, revealing a distinct ligand-binding behavior within APJR homodimers. Furthermore, binding of an antagonistic antibody induces a more compact dimerization by engaging both protomers. Notably, structural analyses of the APJR dimer complexed with an agonistic antibody, with or without Gi proteins, suggest that G protein coupling may promote the dissociation of the APJR dimer during activation. These findings underscore the intricate interplay between ligands, dimerization, and G protein coupling in regulating APJR signaling pathways. |
リンク | Nat Commun / PubMed:39747115 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 2.95 - 3.48 Å |
| 構造データ | EMDB-38574, PDB-8xqe: EMDB-38575, PDB-8xqf: EMDB-38578, PDB-8xqi: EMDB-38579, PDB-8xqj: EMDB-39810, PDB-8z74: EMDB-39816, PDB-8z7j: |
| 化合物 | ![]() ChemComp-CLR: |
| 由来 |
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キーワード | SIGNALING PROTEIN / GPCR / APJR / Gi / Apelin-13 / Dimeric / Apelin-13. / Apelin Receptor / Ligand Free. / Antibody / Antagonist / JN241 / APJ / Agonistic Antibody |
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