Acts upstream of or within blastocyst hatching. Predicted to be located in membrane. Predicted to be integral component of membrane. Predicted to be active in endoplasmic reticulum. Is expressed in several structures, including bone; central nervous system; definitive endoderm; early conceptus; and secondary oocyte. Orthologous to human SMIM14 (small integral membrane protein 14). [provided by Alliance of Genome Resources, Apr 2022]