title: Studies of the conformational behaviour and preferential interactions with opiate receptors of the cis and trans forms of [Dmet2,pro5]enkephalin and [Dmet2,pro5]enkephalinamide by 1H and 13C NMR, theoretical calculations and 13C relaxation measurements.
mesh_terms: D002247:Carbon Isotopes; D004723:Endorphins; D004744:Enkephalin, Methionine / Q000031:analogs & derivatives*; D004745:Enkephalins; D006859:Hydrogen; D006863:Hydrogen-Ion Concentration; D009682:Magnetic Resonance Spectroscopy; D011487:Protein Conformation; D011957:Receptors, Opioid / Q000378:metabolism*; D013237:Stereoisomerism
chemical_list: D002247:Carbon Isotopes; D004723:Endorphins; D004745:Enkephalins; D011957:Receptors, Opioid; D004744:Enkephalin, Methionine; C021717:enkephalin, Met(2)-ProNH2(5)-; C028599:enkephalin, Met(2)-Pro(5)-; D006859:Hydrogen