title: [D-Pen2, L-Cys5]enkephalinamide and[D-Pen2, D-Cys5] enkephalinamide, conformationally constrained cyclic enkephalinamide analogs with delta receptor specificity.
mesh_terms: D000818:Animals; D001681:Biological Assay; D001921:Brain / Q000378:metabolism; D004723:Endorphins / Q000138:chemical synthesis*; D004745:Enkephalins / Q000138:chemical synthesis* / Q000378:metabolism / Q000494:pharmacology; D005260:Female; D006168:Guinea Pigs; D007082:Ileum / Q000187:drug effects; D008297:Male; D051379:Mice; D009022:Morphine Derivatives / Q000378:metabolism; D009119:Muscle Contraction / Q000187:drug effects; D051381:Rats; D011919:Rats, Inbred Strains; D011957:Receptors, Opioid / Q000187:drug effects / Q000378:metabolism; D013329:Structure-Activity Relationship; D014649:Vas Deferens / Q000187:drug effects
chemical_list: D004723:Endorphins; D004745:Enkephalins; D009022:Morphine Derivatives; D011957:Receptors, Opioid; C035086:enkephalinamide, Pen(2)-Cys(5)-; C010616:normorphine