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-Structure paper
タイトル | Molecular insights into ago-allosteric modulation of the human glucagon-like peptide-1 receptor. |
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ジャーナル・号・ページ | Nat Commun, Vol. 12, Issue 1, Page 3763, Year 2021 |
掲載日 | 2021年6月18日 |
著者 | Zhaotong Cong / Li-Nan Chen / Honglei Ma / Qingtong Zhou / Xinyu Zou / Chenyu Ye / Antao Dai / Qing Liu / Wei Huang / Xianqiang Sun / Xi Wang / Peiyu Xu / Lihua Zhao / Tian Xia / Wenge Zhong / Dehua Yang / H Eric Xu / Yan Zhang / Ming-Wei Wang / |
PubMed 要旨 | The glucagon-like peptide-1 (GLP-1) receptor is a validated drug target for metabolic disorders. Ago-allosteric modulators are capable of acting both as agonists on their own and as efficacy ...The glucagon-like peptide-1 (GLP-1) receptor is a validated drug target for metabolic disorders. Ago-allosteric modulators are capable of acting both as agonists on their own and as efficacy enhancers of orthosteric ligands. However, the molecular details of ago-allosterism remain elusive. Here, we report three cryo-electron microscopy structures of GLP-1R bound to (i) compound 2 (an ago-allosteric modulator); (ii) compound 2 and GLP-1; and (iii) compound 2 and LY3502970 (a small molecule agonist), all in complex with heterotrimeric G. The structures reveal that compound 2 is covalently bonded to C347 at the cytoplasmic end of TM6 and triggers its outward movement in cooperation with the ECD whose N terminus penetrates into the GLP-1 binding site. This allows compound 2 to execute positive allosteric modulation through enhancement of both agonist binding and G protein coupling. Our findings offer insights into the structural basis of ago-allosterism at GLP-1R and may aid the design of better therapeutics. |
リンク | Nat Commun / PubMed:34145245 / PubMed Central |
手法 | EM (単粒子) |
解像度 | 2.5 - 3.3 Å |
構造データ | EMDB-30866, PDB-7duq: EMDB-30867, PDB-7dur: EMDB-30936: Molecular insights into ago-allosteric modulation of the human glucagon-like peptide-1 receptor EMDB-31329, PDB-7evm: |
化合物 | ChemComp-HNO: ChemComp-CLR: ChemComp-V6G: |
由来 |
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キーワード | BIOSYNTHETIC PROTEIN / Glucagon-like peptide-1 receptor / Glucagon-like peptide-1 / Ago-allosteric modulator / Type 2 diabetes / Compound 2 / Class B GPCR / MEMBRANE PROTEIN / ago-allosteric modulation of GLP-1R / STRUCTURAL PROTEIN |