Antimicrobial peptide with selective activity. Is only active against Micrococcus luteus (MIC=25 ug/ml) and not against Bacillus cereus, Escherichia coli, Leuconostoc mesenteroides, Micrococcus luteus, Pastewella haemolytica, Staphylococcus aureus, Streptococcus faecalis and Streptococcus uberis. Expressed by the skin glands. Belongs to the frog skin active peptide (FSAP) family. Frenatin subfamily.