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- P680 abstract "P680, or Photosystem II primary donor, (where P stands for pigment) refers to any of the 2 special chlorophyll dimers (also named special pairs), PD1 or PD2. These 2 special pairs form an excitonic dimer, which means that they behave in function as a single entity; i.e., they are excited as if they were a single molecule. The 680 number is its absorption maximum in the red part of the visible spectrum (680 nm). The primary donor receives excitation energy either by absorbing a photon of suitable frequency (colour) or by excitation energy transfer from other chlorophylls within photosystem II. During excitation, an electron is excited to a higher energy level. This electron is subsequently captured by the primary electron acceptor, a pheophytin molecule located within photosystem II near P680. The oxidized P680 (P680+) is subsequently reduced by an electron originating from water (via Oxygen evolving complex).Oxidized P680 (P680+) is the strongest biological oxidizing agent known. It has an estimated redox potential of ~1.3 V. This makes it possible to oxidize water during oxygenic photosynthesis.".
- P680 wikiPageID "1747500".
- P680 wikiPageLength "2115".
- P680 wikiPageOutDegree "15".
- P680 wikiPageRevisionID "677475647".
- P680 wikiPageWikiLink Absorption_spectroscopy.
- P680 wikiPageWikiLink Absorption_spectrum.
- P680 wikiPageWikiLink Category:Light_reactions.
- P680 wikiPageWikiLink Category:Photosynthesis.
- P680 wikiPageWikiLink Chlorophyll.
- P680 wikiPageWikiLink Electromagnetic_spectrum.
- P680 wikiPageWikiLink Energy_level.
- P680 wikiPageWikiLink Excited_state.
- P680 wikiPageWikiLink Nanometer.
- P680 wikiPageWikiLink Nanometre.
- P680 wikiPageWikiLink Oxidizing_agent.
- P680 wikiPageWikiLink Oxygen-evolving_complex.
- P680 wikiPageWikiLink Oxygen_evolving_complex.
- P680 wikiPageWikiLink P700.
- P680 wikiPageWikiLink Pheophytin.
- P680 wikiPageWikiLink Photon.
- P680 wikiPageWikiLink Photosynthesis.
- P680 wikiPageWikiLink Water.
- P680 wikiPageWikiLinkText "P680".
- P680 hasPhotoCollection P680.
- P680 wikiPageUsesTemplate Template:Biochem-stub.
- P680 wikiPageUsesTemplate Template:Reflist.
- P680 subject Category:Light_reactions.
- P680 subject Category:Photosynthesis.
- P680 type Reaction.
- P680 comment "P680, or Photosystem II primary donor, (where P stands for pigment) refers to any of the 2 special chlorophyll dimers (also named special pairs), PD1 or PD2. These 2 special pairs form an excitonic dimer, which means that they behave in function as a single entity; i.e., they are excited as if they were a single molecule. The 680 number is its absorption maximum in the red part of the visible spectrum (680 nm).".
- P680 label "P680".
- P680 sameAs P680.
- P680 sameAs m.05st91.
- P680 sameAs Q7117940.
- P680 sameAs Q7117940.
- P680 wasDerivedFrom P680?oldid=677475647.
- P680 isPrimaryTopicOf P680.