Non-heme dioxygenase active on an unknown substrate. No activity with (S)-reticuline, salutaridine, papaverine, (S)-corytuberine, oripavine, (S)-scoulerine, pavine, noscapine, codeine or thebaine. Binds 1 Fe(2+) ion per subunit. No detectable effect on alkaloid content in RNAi specific mutant. Belongs to the iron/ascorbate-dependent oxidoreductase family.