Predicted to enable aminophospholipid flippase activity. Predicted to be involved in aminophospholipid transport; phospholipid translocation; and positive regulation of protein exit from endoplasmic reticulum. Predicted to act upstream of or within lipid transport. Predicted to be located in membrane. Predicted to be integral component of membrane. Predicted to be active in Golgi apparatus; endoplasmic reticulum; and plasma membrane. Is expressed in several structures, including alimentary system; endocrine gland; forelimb bud; liver; and male reproductive gland or organ. Orthologous to human TMEM30B (transmembrane protein 30B). [provided by Alliance of Genome Resources, Apr 2022]