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