D-glucuronate(in) + H(+)(in) => D-glucuronate(out) + H(+)(out)
d-glucuronate(in) + h(+)(in) => d-glucuronate(out) + h(+)(out)
D-glucuronate(in) + H(+)(in) => D-glucuronate(out) + H(+)(out)
d-glucuronate(in) + h(+)(in) => d-glucuronate(out) + h(+)(out)