Scientists observe elusive missing step in photosynthesis’ final stage
They believe the discovery will help them learn about artificial photosynthesis as a clean energy source.Researchers at the SLAC National Accelerator Laboratory and Lawrence Berkeley National Laboratory haveon the final step of photosynthesis. They observed in atomic detail how Photosystem II, a protein complex found in plants, undergoes a transformation that leads to the loss of an extra oxygen atom.
Researchers took “extremely high-resolution images” of different stages of the process , giving them new insight into specifically how and where the oxygen is produced. Baseball can provide a simple metaphor to illustrate the process. “The center cycles through four stable oxidation states, known as S0 through S3, when exposed to sunlight,” SLAC explains. “On a baseball field, S0 would be the start of the game when a player on home base is ready to go to bat.
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