L-tryptophan + ATP = L-tryptophyl-5'-AMP + diphosphate
l-tryptophan + atp = l-tryptophyl-5'-amp + diphosphate
L-tryptophan + ATP = L-tryptophyl-5'-AMP + diphosphate
l-tryptophan + atp = l-tryptophyl-5'-amp + diphosphate