Naphthocyclinone is an aromatic polyketide and an antibiotic, which is active against Gram-positive bacteria. Polyketides are secondary metabolites, which have important biological functions such as antitumor, immunosupressive or antibiotic activities. NcnH is a hydroxylase involved in the biosynthesis of naphthocyclinone and possibly other polyketides.
Jiyao W et al.(2023). "The conserved domain database in 2023.",