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JOURNAL ARTICLE

Urantide conformation and interaction with the urotensin-II receptor

Diego Brancaccio, Antonio Limatola, Pietro Campiglia, Isabel Gomez-Monterrey, Ettore Novellino, Paolo Grieco, Alfonso Carotenuto
Archiv der Pharmazie 2014, 347 (3): 185-92
24357333
Urotensin II (U-II) is a disulfide bridged peptide hormone identified as the ligand of a G protein-coupled receptor. Human U-II (H-Glu-Thr-Pro-Asp-c[Cys-Phe-Trp-Lys-Tyr-Cys]-Val-OH) has been described as the most potent vasoconstrictor compound identified to date. We have previously identified the compound termed urantide (H-Asp-c[Pen-Phe-DTrp-Orn-Tyr-Cys]-Val-OH), which is the most potent UT receptor (UTR) antagonist described to date. Urantide may have potential clinical value in the treatment of atherosclerosis. In the present study, we studied the conformational preferences of urantide in DPC micelles and developed a urantide/UTR interaction model. This model can help the design of novel peptides and small molecules as UTR antagonists.

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