ALPHA-CONOTOXIN IMI;H-GLY-CYS-CYS-SER-ASP-PRO-ARG-CYS-ALA-TRP-ARG-CYS-NH2;GLY-CYS-CYS-SER-ASP-PRO-ARG-CYS-ALA-TRP-ARG-CYS-NH2;A-conotoxin im I;a-Conotoxin IMI, Conus imperialis;H-Gly-Cys-Cys-Ser-Asp-Pro-Arg-Cys-Ala-Trp-Arg-Cys-NH2 (Disulfide bonds between Cys2 and Cys8/Cys3 and Cys12);L-Cysteinamide, glycyl-L-cysteinyl-L-cysteinyl-L-seryl-L-.alpha.-aspartyl-L-prolyl-L-arginyl-L-cysteinyl-L-alanyl-L-tryptophyl-L-arginyl-, cyclic (2?8),(3?12)-bis(disulfide);α-conotoxin im i