preferred_name: L-tryptophan(in) + Na(+)(in) = L-tryptophan(out) + Na(+)(out)
preferred_name_lc: l-tryptophan(in) + na(+)(in) = l-tryptophan(out) + na(+)(out)
label: L-tryptophan(in) + Na(+)(in) = L-tryptophan(out) + Na(+)(out)
label_lc: l-tryptophan(in) + na(+)(in) = l-tryptophan(out) + na(+)(out)