ATPase. Has a role at an early stage in the morphogenesis of the spore coat outer layers. Directs the assembly of the coat and exosporium to an area around the forespore. ATP + H2O = ADP + H(+) + phosphate Localized on spore coat surrounding the forespore. Expressed in early onset of sporulation. Defective in formation of mature forespores. Fails to progress beyond very early stages of sporulation. Forespores lack the germ cell wall or cortex and the mother cells are filled with swirls of electron-dense material.