. "Catalysis of the transfer of a solute or solutes from one side of a membrane to the other according to the reaction: ATP + H2O + nitrate(out) = ADP + phosphate + nitrate(in)." . . . "nitrate ABC transporter" . "nitrate transmembrane-transporting ATPase activity" . "ATP phosphohydrolase (nitrate-importing)" . "nitrate transporting ATPase activity" . "nitrate-transporting ATPase activity" . . .