L-lysyl(4)-[histone H3] + S-adenosyl-L-methionine = N(6)-methyl-L-lysyl(4)-[histone H3] + S-adenosyl-L-homocysteine + H(+)
l-lysyl(4)-[histone h3] + s-adenosyl-l-methionine = n(6)-methyl-l-lysyl(4)-[histone h3] + s-adenosyl-l-homocysteine + h(+)
"[histone H3]-lysine(4) N-methyltransferase"
"[histone h3]-lysine(4) n-methyltransferase"