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