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