Accumulation of paramagnetic centers in protein solutions exposed to UV-radiation
L'vov, K.M.; Ovcharenko, V.P.; Kim, I.A.
Biofizika 20(5): 797-800
1975
ISSN/ISBN: 0006-3029 PMID: 173403 Document Number: 94337
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.
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