Probable histone demethylase that reduces the levels of histone H3 'Lys-4' methylation in chromatin. Belongs to the flavin monoamine oxidase family. Was originally thought to correspond to two different genes At4g16310 and At4g16320. Was originally thought to correspond to two different genes At4g16310 and At4g16320. Was originally thought to correspond to two different genes At4g16310 and At4g16320. Was originally thought to correspond to two different genes At4g16310 and At4g16320.