Vitamin B12-transporting ATPase

In enzymology, a vitamin B₁₂-transporting ATPase is an enzyme that catalyzes the chemical reaction
The 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. The systematic name of this enzyme class is ATP phosphohydrolase . This enzyme participates in abc transporters - general.

Structural studies

As of late 2007, two structures have been solved for this class of enzymes, with PDB accession codes and.