preferred_name: L-lysyl(20)-[histone H4] + 3 S-adenosyl-L-methionine = N(6),N(6),N(6)-trimethyl-L-lysyl(20)-[histone H4] + 3 S-adenosyl-L-homocysteine + 3 H(+)
preferred_name_lc: l-lysyl(20)-[histone h4] + 3 s-adenosyl-l-methionine = n(6),n(6),n(6)-trimethyl-l-lysyl(20)-[histone h4] + 3 s-adenosyl-l-homocysteine + 3 h(+)
label: "[histone H4]-lysine(20) N-trimethyltransferase"
label_lc: "[histone h4]-lysine(20) n-trimethyltransferase"