This enzyme belongs to the family of transferases, specifically those transferring phosphorus-containing groups (phosphotransferases) with an alcohol group as acceptor.
Ray BL, Raetz CR (1987). "The biosynthesis of gram-negative endotoxin. A novel kinase in Escherichia coli membranes that incorporates the 4'-phosphate of lipid A". J. Biol. Chem. 262 (3): 1122–8. PMID3027079.