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photosystem I
(redirected from Photosystem)

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photosystem I [′fōd·ō‚sis·təm ′wən]
(biochemistry)
One of two reaction sequences of the light phase of photosynthesis in green plants that involves a pigment system which is excited by wavelengths shorter than 700 nanometers and which transfers this energy to energy carriers such as NADPH that are subsequently utilized in carbon dioxide fixation.
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These genes encode directions for making photosystem I, a protein complex that nabs electrons from proteins upstream in the photosynthesis chain.
Enter the virosphere: as evidence of the influence of viruses ... by Ehrenberg, Rachel / Science News
While screening DNA sequences in water samples collected during Craig Venter's Global Ocean Sampling Expedition, his team discovered seven more photosynthesis genes coding for a complex of proteins collectively named photosystem I.
Photosynthetic viruses keep world's oxygen levels up by Asian News International
The first chapter, an overview, is followed by chapters on the structure and function of the cyanobacterial photosystem, the atomic structure of plant photosystem, current models and mechanisms of water splitting, and the specifics of each protein complex.
Photosynthetic protein complexes; a structural approach by SciTech Book News
 
 
 
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