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Protein & Peptide Letters

Editor-in-Chief

ISSN (Print): 0929-8665
ISSN (Online): 1875-5305

Topological Exploration of Cyclic Endomorphin-1 Analogues, Structurally Defined Models for Investigating the Bioactive Conformation of MOR Agonists

Author(s): Luca Gentilucci, Alessandra Tolomelli and Federico Squassabia

Volume 14, Issue 1, 2007

Page: [51 - 56] Pages: 6

DOI: 10.2174/092986607779117218

Price: $65

Abstract

Although there have been several reports on the conformational analysis of endomorphin-1 (YPWF-NH2) and related MOR (μ-opioid receptor) agonists, a definitive, convincing model of the biologically active structure is not yet available. We recently reported the synthesis and pharmacological characterization of the atypical endomorphin-analogue agonist c[YpwFG]. In this paper we discuss the conformational analysis of c[YpwFG] in comparison to its epimers, for investigating the topological features responsible for ligand recognition and receptor activation, and the role of the different pharmacophores.

Keywords: Cyclic endomorphins, bioactive conformation, agonism, MORs, lipophilic peptides


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