glycocholate(out) + n H(+)(out) <=> glycocholate(in) + n H(+)(in)
glycocholate(out) + n h(+)(out) <=> glycocholate(in) + n h(+)(in)
glycocholate(out) + n H(+)(out) <=> glycocholate(in) + n H(+)(in)
glycocholate(out) + n h(+)(out) <=> glycocholate(in) + n h(+)(in)