JmjC domain-containing histone demethylation protein 3B; Histone demethylase that specifically demethylates 'Lys- 9' of histone H3, thereby playing a role in histone code. Does not demethylate histone H3 'Lys-4', H3 'Lys-27', H3 'Lys-36' nor H4 'Lys-20'. Only able to demethylate trimethylated H3 'Lys-9', with a weaker activity than KDM4A, KDM4C and KDM4D. Demethylation of Lys residue generates formaldehyde and succinate; Lysine demethylases
Synonyms: KDM4B, KDM4Bp, hKDM4B, B3KX69, K7ES23 ...