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