EC Number |
Substrates |
Organism |
Products |
Reversibility |
---|
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 |
- |
Spinacia oleracea |
O2 + 2 plastoquinol |
- |
? |
1.10.3.9 | 2 H2O + 2 plastoquinone + 4 hv |
- |
Zea mays |
O2 + 2 plastoquinol |
- |
? |
1.10.3.9 | 2 H2O + 2 plastoquinone + 4 hv |
- |
Glycine max |
O2 + 2 plastoquinol |
- |
? |
1.10.3.9 | 2 H2O + 2 plastoquinone + 4 hv |
- |
Microcoleus sp. |
O2 + 2 plastoquinol |
- |
? |
1.10.3.9 | 2 H2O + 2 plastoquinone + 4 hv |
- |
Thermostichus vulcanus |
O2 + 2 plastoquinol |
- |
? |
1.10.3.9 | 2 H2O + 2 plastoquinone + 4 hv |
- |
Chlamydomonas reinhardtii |
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 | 2 H2O + 2 plastoquinone + 4 hv |
illumination of spinach PSII membranes deprived of intrinsic plastoquinone results in 1O2 formation, singlet oxygen scavenging activity of plastoquinol in photosystem II, significantly suppressed by addition of exogenous plastoquinol to plastoquinone-depleted PSII membranes. Presence of exogenous plastoquinols with a different side-chain length causes a similar extent of 1O2 scavenging activity |
Spinacia oleracea |
O2 + 2 plastoquinol |
- |
? |
1.10.3.9 | 2 H2O + 2 plastoquinone + 4 hv |
photosystem II splits water and drives electron transfer to plastoquinone via photochemical reactions using light energy |
Chlamydomonas reinhardtii |
O2 + 2 plastoquinol |
- |
? |