Antimicrobial peptide (PubMed:9516047). Adopts an alpha helical conformation which can disrupt bacterial membranes (PubMed:9516047). Strongly inhibits the formation of NO by neuronal nitric oxide synthase (nNOS) at micromolar concentrations (PubMed:11784303). Acts by a non-competitive mechanism, probably by binding to calcium/calmodulin and as a consequence blocking calmodulin attachment to nNOS (PubMed:11784303). Expressed by the skin dorsal glands. Contains two amphipathic alpha helix regions separated by a region of less-defined helicity and greater flexibility. Belongs to the frog skin active peptide (FSAP) family. Caerin subfamily.