title: 360 MHz proton NMR spectra of active and inactive derivatives of methionine-enkephalin. Assignments, derived parameters, conformational implications.
mesh_terms: D007930:Leucine; D009682:Magnetic Resonance Spectroscopy; D008715:Methionine; D009294:Narcotics; D009646:Norleucine; D009842:Oligopeptides / Q000302:isolation & purification; D011487:Protein Conformation
chemical_list: D009294:Narcotics; D009842:Oligopeptides; D009646:Norleucine; D008715:Methionine; D007930:Leucine