Na(+)(out) + 2 phosphate + H(+) => Na(+)(in) + diphosphate + H2O
na(+)(out) + 2 phosphate + h(+) => na(+)(in) + diphosphate + h2o
Na(+)(out) + 2 phosphate + H(+) => Na(+)(in) + diphosphate + H2O
na(+)(out) + 2 phosphate + h(+) => na(+)(in) + diphosphate + h2o