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Structure of plant photosystem I determined at 3.4 Å

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Plant photosystem I is a nanophotochemical structure that plays an important part in photosynthesis. It consists of a reaction center and light-harvesting complexes. The photosystem generates the most negative redox potential known in nature (–1 V), uses almost every photon it traps to drive electron transport and produces a quantum yield of almost one. This structure of plant photosystem I is shown viewed from the stroma. Structural elements not in the previous model are shown in red. Chlorophylls in the reaction center are shown as yellow or cyan. Psa and LHC subunits also are...Read full article

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