Enables protein-arginine deiminase activity. Involved in embryonic cleavage. Acts upstream of or within cellular protein metabolic process; cytoplasm organization; and cytoskeleton organization. Located in cortical granule and intermediate filament cytoskeleton. Is expressed in 2-cell stage embryo; ileum; and reproductive system. Human ortholog(s) of this gene implicated in infertility. Orthologous to human PADI6 (peptidyl arginine deiminase 6). [provided by Alliance of Genome Resources, Apr 2022]