. "Catalysis of the reaction: ATP + H2O + cob(III)alamin(out) = ADP + phosphate + cob(III)alamin(in). Cobalamin is also known as vitamin B12." . . . "cobalamin ABC transporter" . "cobalamin-transporting ATPase activity" . "ATP phosphohydrolase (vitamin B12-importing)" . "cobalamin porter activity" . "vitamin B12 porter activity" . "vitamin B12-transporting ATPase activity" . . .