Flavoprotein monooxygenase required for N-hydroxylation of lysine. Involved in the biosynthesis of the siderophore aerobactin which is a chelator that mediates the high-affinity iron transport systems induced by the organism under iron-stressed conditions. L-lysine + NADPH + O2 = H2O + N(6)-hydroxy-L-lysine + NADP(+) Siderophore biosynthesis; aerobactin biosynthesis. Belongs to the lysine N(6)-hydroxylase/L-ornithine N(5)-oxygenase family.