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-Structure paper
タイトル | Structural insights into probe-dependent positive allosterism of the GLP-1 receptor. |
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ジャーナル・号・ページ | Nat Chem Biol, Vol. 16, Issue 10, Page 1105-1110, Year 2020 |
掲載日 | 2020年7月20日 |
著者 | Ana B Bueno / Bingfa Sun / Francis S Willard / Dan Feng / Joseph D Ho / David B Wainscott / Aaron D Showalter / Michal Vieth / Qi Chen / Cynthia Stutsman / Betty Chau / James Ficorilli / Francisco J Agejas / Graham R Cumming / Alma Jiménez / Isabel Rojo / Tong Sun Kobilka / Brian K Kobilka / Kyle W Sloop / |
PubMed 要旨 | Drugs that promote the association of protein complexes are an emerging therapeutic strategy. We report discovery of a G protein-coupled receptor (GPCR) ligand that stabilizes an active state ...Drugs that promote the association of protein complexes are an emerging therapeutic strategy. We report discovery of a G protein-coupled receptor (GPCR) ligand that stabilizes an active state conformation by cooperatively binding both the receptor and orthosteric ligand, thereby acting as a 'molecular glue'. LSN3160440 is a positive allosteric modulator of the GLP-1R optimized to increase the affinity and efficacy of GLP-1(9-36), a proteolytic product of GLP-1(7-36). The compound enhances insulin secretion in a glucose-, ligand- and GLP-1R-dependent manner. Cryo-electron microscopy determined the structure of the GLP-1R bound to LSN3160440 in complex with GLP-1 and heterotrimeric G. The modulator binds high in the helical bundle at an interface between TM1 and TM2, allowing access to the peptide ligand. Pharmacological characterization showed strong probe dependence of LSN3160440 for GLP-1(9-36) versus oxyntomodulin that is driven by a single residue. Our findings expand protein-protein modulation drug discovery to uncompetitive, active state stabilizers for peptide hormone receptors. |
リンク | Nat Chem Biol / PubMed:32690941 |
手法 | EM (単粒子) |
解像度 | 3.3 Å |
構造データ | EMDB-21147, PDB-6vcb: |
化合物 | ChemComp-QW7: |
由来 |
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キーワード | SIGNALING PROTEIN/MEMBRANE PROTEIN / G protein-coupled receptor / membrane protein / family B GPCR / diabetes / allosteric modulator / SIGNALING PROTEIN-MEMBRANE PROTEIN complex |