title: [Retinal sensitized photochemiluminescence of trypsin solutions and the effect of 3-hydroxypyridines].
abstract: A study of retinal sensibilized photochemiluminescence of trypsin is carried out. A kinetic scheme of processes responsible for the luminescence appearance according to which chemiluminescence depends on protein groups reaction with singlet oxygen is suggested. The values of a number of kinetic parameters of these processes are determined. The effect of 3-oxypyridine on retinal sensibilized photochemiluminescence is studied. The 3-oxypyridine addition to protein solution with retinal before radiation considerably decreases the intensity and light sum of the luminescence. 2-Oxypyridine photoprotective action is due to their reaction with primary and peroxide radicals of protein. The values of rate constants of interaction of protein radicals with 2,6-dimethyl-3-oxypyridine and 2-ethyl-6-methyl-3-oxypyridine are determined.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D007700:Kinetics; D008027:Light; D049449:Luminescence; D010777:Photochemistry; D011725:Pyridines; D012172:Retinaldehyde; D014357:Trypsin / Q000528:radiation effects*; D014801:Vitamin A / Q000031:analogs & derivatives
chemical_list: D011725:Pyridines; D014801:Vitamin A; D014357:Trypsin; D012172:Retinaldehyde
vernacular_title: Sensibilizirovannaia retinalem fotokhemiliuminestsentsiia rastvorov tripsina i vliianie na nee 3-oksipiridinov.