Construction and characterization of genetically modified synechocystis sp. PCC 6803 photosystem II core complexes containing carotenoids with shorter pi-conjugation than beta-carotene.

Abstract excerpt

Beta-carotene has been identified as an intermediate in a secondary electron transfer pathway that oxidizes Chl(Z) and cytochrome b(559) in Photosystem II (PS II) when normal tyrosine oxidation is blocked. To test the redox function of carotenoids in this pathway, we replaced the zeta-carotene de...

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