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2-Nitropropane dioxygenase (NPD)-like domain, associated with polyketide synthases (PKS). NPD is part of the nitroalkaneoxidizing enzyme family, that catalyzes oxidative denitrification of nitroalkanes to their corresponding carbonyl compounds and nitrites. NDPs are members of the NAD(P)H-dependent flavin oxidoreductase family that reduce a range of alternative electron acceptors. Most use FAD/FMN as a cofactor and NAD(P)H as electron donor. Some contain 4Fe-4S cluster to transfer electron from FAD to FMN.
Jiyao W et al.(2023). "The conserved domain database in 2023.",