preferred_name: tRNA(Ser) + L-threonine => L-threonyl-tRNA(Ser) + H2O
preferred_name_lc: trna(ser) + l-threonine => l-threonyl-trna(ser) + h2o
label: tRNA(Ser) + L-threonine => L-threonyl-tRNA(Ser) + H2O
label_lc: trna(ser) + l-threonine => l-threonyl-trna(ser) + h2o