Pantinin-2 is a cysteine-free toxic peptide found in the emperor scorpion (paninus imperator). Pantinin-2 has high activity against Gram-positive bacteria but weak activity against Gram-negative bacteria. Pantinin-2 also exhibits activity against Candida tropicalis and has relatively mild hemolytic activity against human erythrocytes. Pantinin-2 can be used in the development of antimicrobial drugs for drug-resistant pathogens.