P680
Sign in to saveP680, or photosystem II primary donor, is the reaction-center chlorophyll a molecular dimer associated with photosystem II in plants, algae, and cyanobacteria, and central to oxygenic photosynthesis.
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Article
9 sectionsContents
- Etymology
- Components
- Action and function
- Excitation
- Charge separation
- Recovery of P680
- See also
- References
- Bibliography
P680, or photosystem II primary donor, is the reaction-center chlorophyll a molecular dimer associated with photosystem II in plants, algae, and cyanobacteria, and central to oxygenic photosynthesis.
== Etymology == Its name is derived from the word “pigment” (P) and the presence of a major bleaching band centered around 680-685 nm in the flash-induced absorbance difference spectra of P680/ P680+•.
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photosynthesis
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digital object identifier
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Q180686
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oxidizing agent
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Q229883
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excited state
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reducing agent
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radiant energy
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photosystem II
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photosynthetic reaction centre
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chlorophyll a
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photosystem I
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oxygen-evolving complex
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dimerization
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