- PDB-9kdg: CryoEM structure of Calcineurin-fusion Human endothelin receptor ... -
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基本情報
登録情報
データベース: PDB / ID: 9kdg
タイトル
CryoEM structure of Calcineurin-fusion Human endothelin receptor type-B in the ligand-free form
要素
Calcineurin-fusion endothelin receptor type-B
Peptidyl-prolyl cis-trans isomerase FKBP1B
キーワード
MEMBRANE PROTEIN / GPCR
機能・相同性
機能・相同性情報
positive regulation of sequestering of calcium ion / negative regulation of calcium-mediated signaling / negative regulation of insulin secretion involved in cellular response to glucose stimulus / neuronal action potential propagation / negative regulation of release of sequestered calcium ion into cytosol / insulin secretion involved in cellular response to glucose stimulus / response to redox state / 'de novo' protein folding / negative regulation of heart rate / FK506 binding ...positive regulation of sequestering of calcium ion / negative regulation of calcium-mediated signaling / negative regulation of insulin secretion involved in cellular response to glucose stimulus / neuronal action potential propagation / negative regulation of release of sequestered calcium ion into cytosol / insulin secretion involved in cellular response to glucose stimulus / response to redox state / 'de novo' protein folding / negative regulation of heart rate / FK506 binding / smooth muscle contraction / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / T cell proliferation / calcium channel inhibitor activity / Ion homeostasis / regulation of release of sequestered calcium ion into cytosol by sarcoplasmic reticulum / release of sequestered calcium ion into cytosol / calcium channel complex / sarcoplasmic reticulum membrane / protein maturation / calcium channel regulator activity / peptidylprolyl isomerase / peptidyl-prolyl cis-trans isomerase activity / Stimuli-sensing channels / calcium-mediated signaling / Z disc / positive regulation of cytosolic calcium ion concentration / protein refolding / transmembrane transporter binding / signaling receptor binding / membrane / cytoplasm 類似検索 - 分子機能
ジャーナル: Nat Commun / 年: 2025 タイトル: Structure of a lasso peptide bound ET receptor provides insights into the mechanism of GPCR inverse agonism. 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 ...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 / 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.
履歴
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2024年11月3日
登録サイト: PDBJ / 処理サイト: PDBJ
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2025年5月7日
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2025年5月7日
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