The origin and evolution of oxygenic photosynthesis - PubMed (original) (raw)
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The origin and evolution of oxygenic photosynthesis
R E Blankenship et al. Trends Biochem Sci. 1998 Mar.
Abstract
The evolutionary developments that led to the ability of photosynthetic organisms to oxidize water to molecular oxygen are discussed. Two major changes from a more primitive non-oxygen-evolving reaction center are required: a charge-accumulating system and a reaction center pigment with a greater oxidizing potential. Intermediate stages are proposed in which hydrogen peroxide was oxidized by the reaction center, and an intermediate pigment, similar to chlorophyll d, was present.
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