6hvb

NMR structure of Urotensin Peptide Asp-c[Cys-Phe-(N-Me)Trp-Lys-Tyr-Cys]-Val in SDS solution

spinqualitylabelsall models 6hvb, 10 NMR models Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 6hvb is a 1 chain structure. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. NonStd Res: E9M Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [UTS2_HUMAN] Highly potent vasoconstrictor. Publication Abstract from PubMed In accordance with their common but also divergent physiological actions, human urotensin II ( hU-II, 1) and urotensin II-related peptide (URP, 2) could stabilize specific urotensin II receptor (UTR) conformations, thereby activating different signalling pathways, a feature referred to as biased agonism or functional selectivity. Sequential N-methylation of the amides in the conserved core sequence of 1, 2 and fragment U-II4-11 (3) shed light on structural requirements involved in their functional selectivity. Thus, eighteen N-methylated UTR ligands were synthesized and their biological profiles evaluated using both in vitro competition binding assays, ex vivo rat aortic ring bioassays and BRET-based biosensor experiments. Biological activity diverged from that of the parent structures contingent on the location of amide methylation indicating relevant hydrogen-bond interactions for function of the endogenous peptides. Conformational analysis of selected N-methyl analogs indicated the importance of specific amide residues of 2 for the distinct pharmacology relative to 1 and 3. Functional Selectivity Revealed by N-Methylation Scanning of Human Urotensin II and Related Peptides.,Merlino F, Billard E, Yousif AM, Di Maro S, Brancaccio D, Abate L, Carotenuto A, Bellavita R, d'Emmanuele di Villa Bianca R, Santicioli P, Marinelli L, Novellino E, Hebert T, Lubell WD, Chatenet D, Grieco P J Med Chem. 2019 Jan 7. doi: 10.1021/acs.jmedchem.8b01601. PMID:30615452 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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