Abstract

The involvement of natural radicals in single-electron processes of cell activity is considered. It was shown that coenzymes that have intermediate free radical quinoid and semichinoid forms can interact with carotenoids to form complexes with a charge transfer with an absorption band of 1030 nm. Moreover, the complex can perform an active light-harvesting function during photosynthesis up to 1100 nm, with the energy transfer from chlorophylls a and b to the complex. Studies of the sorption of the alcoholdehydrogenase–nicotinamide adenine dinucleotide enzyme–cofactor system on a hydrophobic electrically conductive carrier showed that the activity of the enzyme–cofactor system is at its maximum for sequential sorption of the coenzyme and then the apoenzyme. The orientation of the biocatalytic system on the immobilization matrix is of great importance.

中文翻译：

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细胞结构中的自由基

摘要

自然自由基参与细胞活动的单电子过程。结果表明，具有中间自由基醌型和半胆碱型的辅酶可以与类胡萝卜素相互作用，形成复合物，其电荷转移带的吸收带为1030 nm。此外，该复合物可以在光合作用过程中（直至1100 nm）执行主动的集光功能，并从叶绿素a和b进行能量转移到复杂。对疏水性导电载体上的醇脱氢酶-烟酰胺腺嘌呤二核苷酸酶-辅因子系统的吸附研究表明，酶-辅因子系统的活性最大程度地依次吸附辅酶和脱辅酶。生物催化体系在固定基质上的取向非常重要。