The short synthetic peptide (20-54) has antimicrobial activity against the yeasts F.culmorum (IC(50)=8.8 uM) and F.oxysporum (IC(50)=10 uM) P.aeruginosa, and the Gram-negative bacteria E.coli. Expressed by the venom gland. Belongs to the long chain scorpion toxin family. Class 3 subfamily.