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ZIRC
OBO ID: GO:0010242
Term Name: oxygen evolving activity Search Ontology:
Synonyms:
  • photosynthetic water oxidation
Definition: Catalysis of the reaction: 2 H2O = O2 + 4 H+ + 4 e-. The evolution of oxygen from oxidizing water is carried out by the oxygen evolving complex in photosystem II of plants. P680+, the photochemically oxidized reaction-center chlorophyll of PSII, is a strong biological oxidant. The reduction potential of P680+ is more positive than that of water, and thus it can oxidize water to give O2 and H+ ions. The oxygen escapes as a gas while the H+ ions remain in solution inside the thylakoid vesicle. (2)
References:
  • MetaCyc:PSII-RXN
  • MetaCyc:RXN0-5265
Ontology: GO: Molecular Function   QuickGO   AmiGO
PHENOTYPE No data available