Predicted to enable protein homodimerization activity. Acts upstream of or within defense response to bacterium. Predicted to be located in intracellular membrane-bounded organelle and midbody. Predicted to be active in extracellular space. Is expressed in ileum. Orthologous to several human genes including DEFA1B (defensin alpha 1B); DEFA3 (defensin alpha 3); and DEFA5 (defensin alpha 5). [provided by Alliance of Genome Resources, Apr 2022]