Argininamide-type neuropeptide Y Y-1 receptor antagonists: the nature of N-omega-carbamoyl substituents determines Y1R binding mode and affinity

Buschmann, Jonas and Seiler, Theresa and Bernhardt, Guenther and Keller, Max and Wifling, David (2020) Argininamide-type neuropeptide Y Y-1 receptor antagonists: the nature of N-omega-carbamoyl substituents determines Y1R binding mode and affinity. RSC MEDICINAL CHEMISTRY, 11 (2). pp. 274-282. ISSN , 2632-8682

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Abstract

The recently resolved crystal structure of the neuropeptide Y Y-1 receptor (Y1R), co-crystallized with the high-affinity (pK(i): 10.11), argininamide-type Y1R antagonist UR-MK299 (2), revealed that the N-omega-carbamoyl substituent (van der Waals volume: 139 angstrom(3)) is deeply buried in the receptor, occupying a hydrophobic pocket. We synthesized and characterized a series of argininamides, structurally related to 2. Y1R affinity decreased with increasing size of the carbamoyl residue (minimal pK(i): 5.67). Exceeding a critical size of the substituent (van der Waals volume: 212 angstrom(3)), the ligands bound in an inverted mode with the carbamoyl side chain located at the surface of the receptor, as suggested by induced-fit docking and MD simulations.

Item Type: Article
Uncontrolled Keywords: HIGHLY POTENT; FLUORESCENT; PEPTIDE; DESIGN; CANCER;
Subjects: 600 Technology > 615 Pharmacy
Divisions: Chemistry and Pharmacy > Institute of Pharmacy
Chemistry and Pharmacy > Institute of Pharmacy > Alumni or Retired Professors > Pharmaceutical/Medicinal Chemistry II (Prof. Buschauer)
Depositing User: Dr. Gernot Deinzer
Date Deposited: 31 Mar 2021 06:55
Last Modified: 31 Mar 2021 06:55
URI: https://pred.uni-regensburg.de/id/eprint/45170

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