title: Averaging of phi2 and phi3 in [5-leucyl]-enkephalin: NMR study of two isotopic isomers.
mesh_terms: D004723:Endorphins; D004745:Enkephalins; D005998:Glycine; D007536:Isomerism; D009682:Magnetic Resonance Spectroscopy; D011487:Protein Conformation
chemical_list: D004723:Endorphins; D004745:Enkephalins; D005998:Glycine