@article{article4f9547c4,
title   = {'Beta' Methylation of the Phe7 and Trp9 melanotropin side chain pharmacophores affects ligand-receptor interactions and prolonged biological activity},
author = {Haskell-Luevano, Carrie and Toth, Kate and Boteju, Lakmal and Job, Constatin and Castrucci, Ana Maria de Lauro and Hadley, Mac E and Hruby, V J},
year = {1997},
journal   = {Jornal of Medicinal Chemistry}
}