Cationic peptide with probable antimicrobial activity against coral pathogens. Shows in vitro activity against Gram-positive bacteria and the filamentous fungus F.oxysporum (MIC=1.25 uM). Gram-positive bacteria tested are B.megaterium (MIC=20 uM), S.aureus (MIC=5 uM), M. luteus (MIC=1.25 uM), B.stationis (MIC=10 uM), M.maritypicum (MIC=20 uM). Has no or little effect against Gram-negative bacteria (the coral pathogen V.coralliilyticus (MIC>20 uM), V.aesturianus (MIC>20 uM), V.shiloi (MIC>20 uM), and E.coli (MIC=10 uM)). Has no hemolytic activity against sheep erythrocytes. Is specifically expressed in the granular cells of the ectoderm. Transiently up-regulated (6-fold) after challenge with the coral pathogen V.coralliilyticus and dramatically repressed (50-fold) thereafter. Average mass. Belongs to the coral AMP family. Truncated N-terminus.