Predicted to enable aspartic endopeptidase activity, intramembrane cleaving; protein homodimerization activity; and ubiquitin protein ligase binding activity. Acts upstream of or within in utero embryonic development. Located in cell surface and endoplasmic reticulum membrane. Is expressed in several structures, including brain; embryo ectoderm; extraembryonic component; hemolymphoid system; and intervertebral disc. Orthologous to human HM13 (histocompatibility minor 13). [provided by Alliance of Genome Resources, Apr 2022]