Na(+)(in) + ATP + H2O = Na(+)(out) + ADP + phosphate + H(+)
na(+)(in) + atp + h2o = na(+)(out) + adp + phosphate + h(+)
Na(+)(in) + ATP + H2O = Na(+)(out) + ADP + phosphate + H(+)
na(+)(in) + atp + h2o = na(+)(out) + adp + phosphate + h(+)