[暴露于紫外线辐射的蛋白质溶液中顺磁中心的积累]
[Accumulation of paramagnetic centers in protein solutions exposed to UV-radiation].
作者信息
L'vov K M, Ovcharenko V P, Kim Iu A
出版信息
Biofizika. 1975 Sep-Oct;20(5):797-800.
PMID:173403
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.
摘要
结果表明，在77K下紫外线照射的蛋白质溶液中顺磁中心（PC）的浓度接近极限值。每个分子的PC极限数量（n）与其所含芳香族氨基酸残基的数量成正比，n（σ）=2 + 0.1σ。PC的形成较为缓慢，因为芳香族氨基酸残基吸收的所有能量都转移到了形成的自由基上。
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