indole-3-pyruvate + L-alanine => L-tryptophan + pyruvate
indole-3-pyruvate + l-alanine => l-tryptophan + pyruvate
indole-3-pyruvate + L-alanine => L-tryptophan + pyruvate
indole-3-pyruvate + l-alanine => l-tryptophan + pyruvate