SbnC, related to siderophore biosynthesis protein IucA and IucC, is encoded in Staphylococcus aureus in the sbnABCDEFGHI locus responsible for the biosynthesis of staphyloferrin B, a carboxylate-type siderophore. SbnC is found in many species of Staphylococcus.
Jiyao W et al.(2023). "The conserved domain database in 2023.",