Tags: Enzyme.
In enzymology a vitamin B12-transporting ATPase (EC 3.6.3.33) is an enzyme that catalyzes the chemical reactionATP + H2O + vitamin B12out ADP + phosphate + vitamin B12inThe 3 substrates of this enzyme are ATP H2O and vitamin B12 whereas its 3 products are ADP phosphate and vitamin B12.This enzyme belongs to the family of hydrolases specifically those acting on acid anhydrides to catalyse transmembrane movement of substances.