N(6)-methyl-L-lysyl(27)-[histone H3] + S-adenosyl-L-methionine => N(6),N(6)-dimethyl-L-lysyl(27)-[histone H3] + S-adenosyl-L-homocysteine + H(+)
n(6)-methyl-l-lysyl(27)-[histone h3] + s-adenosyl-l-methionine => n(6),n(6)-dimethyl-l-lysyl(27)-[histone h3] + s-adenosyl-l-homocysteine + h(+)
N(6)-methyl-L-lysyl(27)-[histone H3] + S-adenosyl-L-methionine => N(6),N(6)-dimethyl-L-lysyl(27)-[histone H3] + S-adenosyl-L-homocysteine + H(+)
n(6)-methyl-l-lysyl(27)-[histone h3] + s-adenosyl-l-methionine => n(6),n(6)-dimethyl-l-lysyl(27)-[histone h3] + s-adenosyl-l-homocysteine + h(+)