The ABC-type ferric hydroxamate transporter, is a translocase enzyme expressed in the cell membranes of bacterial and animal cells. The enzyme possesses an ATP Cassette, indicated by the presence of two similar triphosphate-binding residues and two functional integral membrane domains. It has been observed as a bacterial protein that binds with an extracellular binding protein and facilitates the import of IronFe3+-complexed hydroxamate siderophores. The enzyme catalyzes the following chemical reactionATP + H20 + Iron-Hydroxamate complex hydroxamate-binding protein = ADP + phosphate + Iron-Hydroxamate complex hydroxamate-binding protein