taurine(in) + H(+)(in) <=> taurine(out) + H(+)(out)
taurine(in) + h(+)(in) <=> taurine(out) + h(+)(out)
taurine(in) + H(+)(in) <=> taurine(out) + H(+)(out)
taurine(in) + h(+)(in) <=> taurine(out) + h(+)(out)