Predicted to be involved in defense response to Gram-negative bacterium; defense response to Gram-positive bacterium; and killing of cells of other organism. Predicted to act upstream of or within defense response to bacterium. Predicted to be located in extracellular region. Is expressed in large intestine; submandibular gland; and testis. Orthologous to human DEFB128 (defensin beta 128). [provided by Alliance of Genome Resources, Apr 2022]