label: histone H3K9me/H3K9me2 demethylase activity
label_lc: histone h3k9me/h3k9me2 demethylase activity
description: "Catalysis of the removal of a methyl group from a di or a monomethyl-lysine residue at position 9 of the histone H3 protein. This is a dioxygenase reaction that is dependent on Fe(II) and 2-oxoglutarate."