A synthetic peptide displays antimicrobial activities against S.aureus, P.aeruginosa, E.coli and B.cepacia. The antimicrobial activity against S.aureus, E.coli and B.cepacia is reduced in raised concentration of NaCl, but its action against P.aeruginosa is independent of NaCl concentration. Most highly expressed in testis and heart. Belongs to the beta-defensin family.