Has antimicrobial activity against B.cereus (MIC=5.8 ug/ml), B.subtilis (MIC=12.3 ug/ml), S.aureus (MIC=10.4 ug/ml), E.coli Edl 933 (MIC=3.2 ug/ml) and E.coli MG/655 (MIC=4.2 ug/ml). Non-hemolytic. Expressed in the fat body, hemocytes and salivary glands of partially-fed female ticks. Not expressed in the midgut.