ID 2.1.1.370 DE [histone H3]-lysine(4) N-dimethyltransferase. CA L-lysyl(4)-[histone H3] + 2 S-adenosyl-L-methionine = 2 H(+) + N(6),N(6)- CA dimethyl-L-lysyl(4)-[histone H3] + 2 S-adenosyl-L-homocysteine. CC -!- This entry describes enzymes that successively methylate the CC L-lysine(4) residue of histone H3 (H3K4) twice, ultimately generating CC a dimethylated form. CC -!- These modifications influence the binding of chromatin-associated CC proteins.The human NSD3 protein also catalyzes the activity of CC EC 2.1.1.371. cf. EC 2.1.1.354 and EC 2.1.1.364. DR Q9BZ95, NSD3_HUMAN ; Q6P2L6, NSD3_MOUSE ; //