dADP(out) + phosphate(in) + H(+)(out) <=> dADP(in) + phosphate(out) + H(+)(in)
dadp(out) + phosphate(in) + h(+)(out) <=> dadp(in) + phosphate(out) + h(+)(in)
dADP(out) + phosphate(in) + H(+)(out) <=> dADP(in) + phosphate(out) + H(+)(in)
dadp(out) + phosphate(in) + h(+)(out) <=> dadp(in) + phosphate(out) + h(+)(in)