N6 N6-idrossilisina O-acetiltransferasi RRNA (adenina-N6-)-metiltransferasi Classe SR.N6 N6-metil-lisina ossidasi MRNA (2'-O-metiladenosina-N6-)-metiltransferasi Amminoglicoside N6'-acetiltransferasi L-lisina 6-monoossigenasi (NADPH) TRNA (adenina-N6-)-metiltransferasi UDP-N-acetilmuramoilpentapeptide-lisina N6-alaniltransferasi Azoturo di piombo Chinetina Ferroina