title: Kappa-receptor specificity of [Met5]enkephalyl-Arg-Gly-Leu and [Met5]enkephalyl-Arg-Gly-Leu-Lys.
mesh_terms: D000818:Animals; D001921:Brain / Q000378:metabolism; D004744:Enkephalin, Methionine / Q000031:analogs & derivatives* / Q000378:metabolism; D006168:Guinea Pigs; D066298:In Vitro Techniques; D007700:Kinetics; D051381:Rats; D011957:Receptors, Opioid / Q000378:metabolism*; D017473:Receptors, Opioid, kappa
chemical_list: D011957:Receptors, Opioid; D017473:Receptors, Opioid, kappa; D004744:Enkephalin, Methionine; C033453:enkephalin-Met, Arg(6)-Gly(7)-Leu(8)-; C038498:enkephalin-Met, Arg(6)-Gly(7)-Leu(8)-Lys(9)-