title: [Accumulation of paramagnetic centers in protein solutions exposed to UV-radiation].
abstract: It is shown that concentration of paramagnetic centres (PC) in UV-irradiated protein solutions at 77degreesK approximates the limiting value. The limiting number of PC (n) per one molecule is in direct proportion to that of aromatic amino acid residues in it n(sigma)=2+0,1 sigma. The formation of PC slopps because all the energy absorbed by aromatic amino acid residues is transfered to the radicals formed.
mesh_terms: D000429:Alcohol Oxidoreductases / Q000528:radiation effects; D004578:Electron Spin Resonance Spectroscopy; D004798:Enzymes / Q000528:radiation effects*; D009113:Muramidase / Q000528:radiation effects; D009218:Myosins / Q000528:radiation effects; D010047:Ovalbumin / Q000528:radiation effects; D010206:Papain / Q000528:radiation effects; D010434:Pepsin A / Q000528:radiation effects; D011506:Proteins / Q000528:radiation effects*; D011830:Radiation Effects; D012260:Ribonucleases / Q000528:radiation effects; D012709:Serum Albumin / Q000528:radiation effects; D014357:Trypsin / Q000528:radiation effects; D014466:Ultraviolet Rays
chemical_list: D004798:Enzymes; D011506:Proteins; D012709:Serum Albumin; D010047:Ovalbumin; D000429:Alcohol Oxidoreductases; D012260:Ribonucleases; D009113:Muramidase; D014357:Trypsin; D010206:Papain; D010434:Pepsin A; D009218:Myosins
vernacular_title: Issledovanie nakopleniia paramagnitnykh tsentrov v rastvorakh belkov pri deĭstvii UF-sveta