Has antimicrobial activity against Gram-positive bacteria (C.glutamicum ATCC 13032 (MIC=1.6 uM) and B.subtilis ATCC 23857 (MIC=1.6 uM)) and Gram-negative bacteria (E.coli ATCC 25922 (MIC=12.5 uM) and P.aeruginosa ATCC 27853 (MIC=25.0 uM)). Displays very low activity against the Gram-positive bacteria S.aureus ATCC 9144 (MIC>100 uM). Oxidation likely reduces antimicrobial activity against Gram-positive bacteria and Gram-negative bacteria. With oxidation at Met-5 and Met-9. Displays cytotoxic effects on human melanoma cancer cell line A2058 (IC(50)=4.1 uM) and the human fibroblast cell line MRC-5 (IC(50)=7.5 uM).