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- W2001134797 abstract "Urotensin II (U-II) is a disulfide bridged peptide hormone recently identified as the ligand of a G-protein-coupled receptor. Human U-II (H-Glu-Thr-Pro-Asp-cyclo[Cys-Phe-Trp-Lys-Tyr-Cys]-Val-OH) has been described as the most potent vasoconstrictor compound identified to date. We have recently identified both a superagonist of hU-II termed P5U and the compound termed urantide, which is the most potent UT receptor peptide antagonist described to date. Our previous conformational studies showed that hU-II and its analogues with agonist activity adopt a well-defined type II‘ β-hairpin structure in anisotropic SDS membrane-like environment. This structural arrangement allows tight contact among the Trp7, Lys8, and Tyr9 side chains, which is fundamental to obtain full agonist activity. Here, we report an extensive SAR study on new analogues with agonist/antagonist activity on UT receptor. We investigated their biological activity and performed a conformational analysis by spectroscopic and computational methods. Our goal is to obtain a structure-based model able to explain the agonist/antagonist functional switching of these ligands." @default.
- W2001134797 created "2016-06-24" @default.
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- W2001134797 date "2005-10-14" @default.
- W2001134797 modified "2023-10-15" @default.
- W2001134797 title "Urotensin-II Receptor Ligands. From Agonist to Antagonist Activity" @default.
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- W2001134797 doi "https://doi.org/10.1021/jm058043j" @default.
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