Part of the ABC transporter complex YfiYZ/YfhA/YusV involved in import of the iron-hydroxamate siderophores schizokinen, arthrobactin and corprogen. Binds the siderophores and delivers them to the surface of YfiZ/YfhA (Probable). The complex is composed of one ATP-binding protein (YusV), two transmembrane proteins (YfiZ and YfhA) and a solute-binding protein (YfiY). Interacts with FloT (PubMed:23651456). Present in detergent-resistant membrane (DRM) fractions that may be equivalent to eukaryotic membrane rafts; these rafts include proteins involved in signaling, molecule trafficking and protein secretion. Induced by iron starvation, repressed by fur. Strains lacking this gene show a reduction in growth stimulation by the iron-hydroxamate siderophores schizokinen and arthrobactin compared to wild-type. Belongs to the bacterial solute-binding protein 8 family.