title: Synthesis, in vitro opiate activity, and intramolecular tyrosine--tryptophan distances of [4-tryptophan]enkephalin analogues. A reassessment of conformational models of enkephalin in solution.
mesh_terms: D000818:Animals; D055598:Chemical Phenomena; D002621:Chemistry; D004723:Endorphins / Q000138:chemical synthesis*; D004745:Enkephalins / Q000138:chemical synthesis* / Q000494:pharmacology; D006168:Guinea Pigs; D066298:In Vitro Techniques; D008968:Molecular Conformation; D009119:Muscle Contraction / Q000187:drug effects; D009130:Muscle, Smooth / Q000187:drug effects; D011957:Receptors, Opioid / Q000187:drug effects*; D012996:Solutions; D013050:Spectrometry, Fluorescence; D013329:Structure-Activity Relationship; D013816:Thermodynamics; D014364:Tryptophan; D014443:Tyrosine
chemical_list: D004723:Endorphins; D004745:Enkephalins; D011957:Receptors, Opioid; D012996:Solutions; D014443:Tyrosine; D014364:Tryptophan