An organized light-harvesting and reaction-center assembly supporting photosynthetic energy conversion.
An antenna transfers excitation to a reaction centre, where charge separation initiates electron transfer. This distinguishes capture of a photon from conservation of its energy in a redox reaction. In oxygenic photosynthesis, two photosystems act in a connected electron-transfer chain. [ref]
Molecular Biology of the Cell, 4th edition by Bruce Alberts and others. Chapters 3, 6 and 15, protein function, translation and cell signalling
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