"threonine--tRNA ligase"
"threonine--trna ligase"
tRNA(Thr) + L-threonine + ATP = L-threonyl-tRNA(Thr) + AMP + diphosphate + H(+)
trna(thr) + l-threonine + atp = l-threonyl-trna(thr) + amp + diphosphate + h(+)