bisanhydrobacterioruberin + AH2 => dihydrobisanhydrobacterioruberin + A
bisanhydrobacterioruberin + ah2 => dihydrobisanhydrobacterioruberin + a
bisanhydrobacterioruberin + AH2 => dihydrobisanhydrobacterioruberin + A
bisanhydrobacterioruberin + ah2 => dihydrobisanhydrobacterioruberin + a