Part of the ABC transporter FtsEX involved in cellular division (By similarity). Has ATPase activity (PubMed:25511207). Requires magnesium or manganese for optimal activity. Inhibited by high concentrations of cobalt and by cupric phenanthroline. Optimum pH is 7.4-7.8 for ATPase activity. Optimum temperature is 37 degrees Celsius for ATPase activity. Homodimer (PubMed:16416128, PubMed:25511207). Forms a membrane-associated complex with FtsX (PubMed:16416128). Associated with the membrane through an interaction with FtsX. The active form is a dimer, wherein the participating monomers are held together by non-covalent interactions, with the Cys-84 of each monomer present at the dimer interface. In vitro, under oxidizing environment, the dimer gets stabilized by the formation of Cys-84-Cys-84 disulfide bond. Belongs to the ABC transporter superfamily.