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Literature summary extracted from

  • Kaminskaya, O.P.; Shuvalov, V.A.
    Biphasic reduction of cytochrome b559 by plastoquinol in photosystem II membrane fragments: evidence for two types of cytochrome b559/plastoquinone redox equilibria (2013), Biochim. Biophys. Acta, 1827, 471-483.
    View publication on PubMed

Localization

EC Number Localization Comment Organism GeneOntology No. Textmining
1.10.3.9 membrane
-
 Beta vulgaris 16020
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Natural Substrates/ Products (Substrates)

EC Number Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
1.10.3.9 2 H2O + 2 plastoquinone + 4 hv Beta vulgaris
-
 O2 + 2 plastoquinol
-
 ?

Organism

EC Number Organism UniProt Comment Textmining
1.10.3.9 Beta vulgaris
-
-
-

Source Tissue

EC Number Source Tissue Comment Organism Textmining
1.10.3.9 leaf
-
 Beta vulgaris
-

Substrates and Products (Substrate)

EC Number Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
1.10.3.9 2 H2O + 2 plastoquinone + 4 hv
-
 Beta vulgaris O2 + 2 plastoquinol
-
 ?
1.10.3.9 2 H2O + 2 plastoquinone + 4 hv 2,6-dichloro-1,4-benzoquinone and K3Fe(CN)6 as electron acceptors. Oxidation of free quinols by one-electron carriers proceeds rather slowly Beta vulgaris O2 + 2 plastoquinol
-
 ?
1.10.3.9 additional information PS II membrane fragments that contain a membrane pool of PQ and are largely devoid of PS I and Cyt b6f complexes are a convenient object to investigate the process of Cyt b559 photoreduction: biphasic reduction of cytochrome b559 by plastoquinol in photosystem II membrane fragments, two types of cytochrome b559/plastoquinone redox equilibria, detailed overview. In samples of PS II membrane fragments with preoxidized Cyt b559 only a fraction of Cyt b559 (about a half of photoreduced Cyt b559) can be rapidly reduced following a short illumination while the other reduced Cyt b559 is accumulated much slower in the dark. Photoreduction of Cyt b559 in the presence of decylplastoquinone Beta vulgaris ?
-
 ?

Temperature Optimum [°C]

EC Number Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
1.10.3.9 20
-
 assay at Beta vulgaris

pH Optimum

EC Number pH Optimum Minimum pH Optimum Maximum Comment Organism
1.10.3.9 6.5 8.3 assay at Beta vulgaris