Stimulates insulin release from beta cells at a concentration of 1 uM and release of glucagon-like peptide 1 (GLP-1) from enteroendocrine cells at a concentration of 10 nM in vitro. Reduces secretion of interferon gamma from peritoneal cells in a mouse model. Has no inhibitory activity against Gram-positive bacterium B.megaterium Bm11 or Gram-negative bacterium E.coli ATCC 25922 at concentrations of up to 100 uM. Has no hemolytic activity against mouse erythrocytes. Homodimer; the relevance of this is unclear as other tigerinins do not form dimers and a synthetic peptide remained a monomer. Expressed by the skin glands. Homodimer.