EC |
1.10.3.9 |
Accepted name: |
photosystem II |
Reaction: |
2 H2O + 2 plastoquinone + 4 hν = O2 + 2 plastoquinol |
Systematic name: |
H2O:plastoquinone reductase (light-dependent) |
Comments: |
Contains chlorophyll a, β-carotene, pheophytin, plastoquinone, a Mn4Ca cluster, heme and non-heme iron. Four successive photoreactions, resulting in a storage of four positive charges, are required to oxidize two water molecules to one oxygen molecule. |
Links to other databases: |
BRENDA, EXPASY, Gene, KEGG, MetaCyc, PDB |
References: |
1. |
Knaff, D.B., Malkin, R., Myron, J.C. and Stoller, M. The role of plastoquinone and β-carotene in the primary reaction of plant photosystem II. Biochim. Biophys. Acta 459 (1977) 402–411. [DOI] [PMID: 849432] |
2. |
Guskov, A., Kern, J., Gabdulkhakov, A., Broser, M., Zouni, A. and Saenger, W. Cyanobacterial photosystem II at 2.9-Å resolution and the role of quinones, lipids, channels and chloride. Nat. Struct. Mol. Biol. 16 (2009) 334–342. [DOI] [PMID: 19219048] |
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[EC 1.10.3.9 created 2011] |
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