4(RPK)-TASP AIDS-111791 AIDS111791 NH2-Lys[-Lys-Pro-Arg-NH2]-Lys-Lys[-Lys-Pro-Arg-NH2]-Gly-Pro-Lys[-Lys-Pro-Arg-NH2]-Glu-Lys[-Lys-Pro-Arg-NH2]-Gly-Cys-COOH Pseudopeptides