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Bacteriochlorophyll Interaction with Singlet Oxygen in Membranes of Purple Photosynthetic Bacteria: Does the Protective Function of Carotenoids Exist?
Doklady Biochemistry and Biophysics ( IF 0.8 ) Pub Date : 2019-07-31 , DOI: 10.1134/s1607672919030141 Z K Makhneva 1 , A A Ashikhmin 1 , M A Bolshakov 1 , A A Moskalenko 1
中文翻译:
紫色光合细菌膜中细菌叶绿素与单线态氧的相互作用:类胡萝卜素的保护功能是否存在?
更新日期:2019-07-31
Doklady Biochemistry and Biophysics ( IF 0.8 ) Pub Date : 2019-07-31 , DOI: 10.1134/s1607672919030141 Z K Makhneva 1 , A A Ashikhmin 1 , M A Bolshakov 1 , A A Moskalenko 1
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Abstract
The direct action of singlet oxygen on the bacteriochlorophyll (BChl) of light-harvesting complexes in the membranes of four species of purple non-sulfur and sulfur photosynthesizing bacteria with and without carotenoids was studied. It was found that BChl in carotenoidless samples is generally more resistant to the action of singlet oxygen compared to the control. It is assumed that carotenoids are not required to protect BChl of bacterial light-harvesting complexes from singlet oxygen, and in the classic work by Griffith et al. [1] the apoptosis process in carotenoidless mutant cells, which involves the destruction of complexes, the appearance of monomeric BChl, and the generation of singlet oxygen caused by BChl, followed by BChl oxidation, was mistakenly attributed to the protective function of carotenoids.中文翻译:
紫色光合细菌膜中细菌叶绿素与单线态氧的相互作用:类胡萝卜素的保护功能是否存在?