How do purple bacteria obtaine the redox equivalents (NADH or NADPH)?

09 September 2017 1 5K Report

Hello every one. I try to understand metabolic ways in purple bacteria and Green non-sulfur bacteria. As i read from literature, Purple bacteria realize only the cyclic electron transport. So how do they obtaine NADH or NADPH, needed for CO2 fixation and other reactions, required resucing equivalents?

Martin Klvana

Ectothiorhodospira shaposhnikovii . . . weak activities of NADH- and NADPH-oxidoreductases; the citric acid cycle is not closed [but only one enzyme is missing: alpha-ketoglutarate dehydrogenase].

https://www.ncbi.nlm.nih.gov/pubmed/7412613

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