ATP + H2O + phospholipidSide 1 = ADP + phosphate + phospholipidSide 2. Efficient exit from the endoplasmic reticulum does not require TMEM30A, nor TMEM30B. Belongs to the cation transport ATPase (P-type) (TC 3.A.3) family. Type IV subfamily. It is uncertain whether Met-1 or Met-53 is the initiator.