acetate + Na(+)(out) + CO2 => malonate + Na(+)(in) + H(+)
acetate + na(+)(out) + co2 => malonate + na(+)(in) + h(+)
acetate + Na(+)(out) + CO2 => malonate + Na(+)(in) + H(+)
acetate + na(+)(out) + co2 => malonate + na(+)(in) + h(+)