Predicted to enable serine-type endopeptidase activity. Predicted to be involved in peptide hormone processing; single fertilization; and sperm capacitation. Predicted to be located in acrosomal membrane. Predicted to be active in membrane and trans-Golgi network. Predicted to be integral component of Golgi membrane. Orthologous to human PCSK4 (proprotein convertase subtilisin/kexin type 4). [provided by Alliance of Genome Resources, Apr 2022]