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