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