preferred_name: L-lysine(in) + H(+)(in) => L-lysine(out) + H(+)(out)
preferred_name_lc: l-lysine(in) + h(+)(in) => l-lysine(out) + h(+)(out)
label: L-lysine(in) + H(+)(in) => L-lysine(out) + H(+)(out)
label_lc: l-lysine(in) + h(+)(in) => l-lysine(out) + h(+)(out)