+検索条件
-Structure paper
| タイトル | Structure of a lasso peptide bound ET receptor provides insights into the mechanism of GPCR inverse agonism. |
|---|---|
| ジャーナル・号・ページ | Nat Commun, Vol. 16, Issue 1, Page 3446, Year 2025 |
| 掲載日 | 2025年4月22日 |
著者 | Wataru Shihoya / Hiroaki Akasaka / Peter A Jordan / Anna Lechner / Bethany K Okada / Gabriella Costa Machado da Cruz / Fumiya K Sano / Tatsuki Tanaka / Ryo Kawahara / Rajan Chaudhari / Hiroko Masamune / Mark J Burk / Osamu Nureki / ![]() |
| PubMed 要旨 | Lasso peptides exhibit a unique lariat-like knotted structure imparting exceptional stability and thus show promise as therapeutic agents that target cell-surface receptors. One such receptor is the ...Lasso peptides exhibit a unique lariat-like knotted structure imparting exceptional stability and thus show promise as therapeutic agents that target cell-surface receptors. One such receptor is the human endothelin type B receptor (ET), which is implicated in challenging cancers with poor immunotherapy responsiveness. The Streptomyces-derived lasso peptide, RES-701-3, is a selective inhibitor for ET and a compelling candidate for therapeutic development. However, meager production from a genetically recalcitrant host has limited further structure-activity relationship studies of this potent inhibitor. Here, we report cryo-electron microscopy structures of ET receptor in both its apo form and complex with RES-701-3, facilitated by a calcineurin-fusion strategy. Hydrophobic interactions between RES-701-3 and the transmembrane region of the receptor, especially involving two tryptophan residues, play a crucial role in RES-701-3 binding. Furthermore, RES-701-3 prevents conformational changes associated with G-protein coupling, explaining its inverse agonist activity. A comparative analysis with other lasso peptides and their target proteins highlights the potential of lasso peptides as precise drug candidates for G-protein-coupled receptors. This structural insight into RES-701-3 binding to ET receptor offers valuable information for the development of novel therapeutics targeting this receptor and provides a broader understanding of lasso peptide interactions with human cell-surface receptors. |
リンク | Nat Commun / PubMed:40263271 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 3.3 - 3.5 Å |
| 構造データ | ![]() EMDB-62272: Consensus map of Calcineurin-fusion Human endothelin receptor type-B in complex with RES-701-3 ![]() EMDB-62273: focused on refinement endothelin receptor type-B of Calcineurin-fusion Human endothelin receptor type-B in complex with RES-701-3 EMDB-62274, PDB-9kdf: EMDB-62275, PDB-9kdg: |
| 化合物 | ![]() ChemComp-CA: ![]() ChemComp-FE: ![]() ChemComp-ZN: ![]() ChemComp-FK5: |
| 由来 |
|
キーワード | MEMBRANE PROTEIN / GPCR |
ムービー
コントローラー
構造ビューア
万見文献について



著者

リンク









homo sapiens (ヒト)
streptomyces venezuelae (バクテリア)
キーワード