921050 ENK methionin-enkephalin-Arg6-Gly7-Leu8 6 3832710 Met-Enk-Arg-Gly-Leu methionine-enkephalin-Arg6-Gly7-Leu8 3 2599266 MEAGL methionine-enkephalin-Arg6-Gly7-Leu8 2 2632162 MENK8 methionine-enkephalin-Arg6-Gly7-Leu8 2 2641578 MERGL methionine-enkephalin-arg6-gly7-leu8 2 2231599 Met-Enk-Arg6-Gly7-Leu8 methionine-enkephalin-Arg6-Gly7-Leu8 2 551029 met-enkephalin-Arg-Gly-Leu methionine-enkephalin-Arg6-Gly7-Leu8 2 2632176 Enk-8 methionine-enkephalin-Arg6-Gly7-Leu8 1 3015325 Met-8 methionine-enkephalin-Arg6-Gly7-Leu8 1