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pheophytins
EntityQ115237· pop 14· linked from 62 articles

pheophytins

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Also known as pheophytin

thumb|310px|Pheophytin a, i.e. chlorophyll a|chlorophyll a without the Mg2+ ion.

~5 min read

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7 sections
Contents
  • Structure
  • History and discovery
  • Reaction in purple bacteria
  • Involvement in photosystem II
  • See also
  • References
  • References

thumb|310px|Pheophytin a, i.e. chlorophyll a|chlorophyll a without the Mg2+ ion.

Pheophytin or phaeophytin is a chemical compound that serves as the first electron carrier intermediate in the electron transfer pathway of Photosystem II (PS II) in plants, and the type II photosynthetic reaction center (RC P870) found in purple bacteria. In both PS II and RC P870, light drives electrons from the reaction center through pheophytin, which then passes the electrons to a quinone (QA) in RC P870 and RC P680. The overall mechanisms, roles, and purposes of the pheophytin molecules in the two transport chains are analogous to each other.

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