[The photodestruction of hemoglobin]

It was shown that hemoglobin photodestruction occurs in the process of light absorption by protein globin, as well as by its hem. Quantum yields of photoreactions decreased with the increase of irradiation wave length. We observed two mechanisms of photodestruction: dependent and independent on the existence of the dissolved oxygen in solution. Hemoglobin photodestruction due to hem absorption did not exist in the absence of dissolved oxygen.