Antimicrobial peptide with antibacterial and antiviral activities (PubMed:9266696). Adopt an alpha helical conformation which can disrupt bacterial membranes (PubMed:9266696). 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 (By similarity). Is inactive. Is inactive. Expressed by the skin parotoid and/or rostral glands. Contains two amphipathic alpha helix regions separated by a region of less-defined helicity and greater flexibility. The major product is Caerin-1.1; in addition, different peptides are produced that are missing some amino acid residues at the N-terminus. Caerin-1.1.1 is inactive. Belongs to the frog skin active peptide (FSAP) family. Caerin subfamily.