FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
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Term photosystem II ID (Ontology) GO:0009523 (Gene Ontology)
Definition A photosystem that contains a pheophytin-quinone reaction center with associated accessory pigments and electron carriers. In cyanobacteria and chloroplasts, in the presence of light, PSII functions as a water-plastoquinone oxidoreductase, transferring electrons from water to plastoquinone, whereas other photosynthetic bacteria carry out anoxygenic photosynthesis and oxidize other compounds to re-reduce the photoreaction center.[ ISBN:0943088399 PubMed:9821949 ]
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photosynthetic membrane___
membrane protein complex__|
                          photosystem
                           |__photosystem II
                               |__chloroplast photosystem II
                               |__photosystem II antenna complex
                               |__photosystem II oxygen evolving complex
                               |__photosystem II reaction center
                               |__plasma membrane-derived thylakoid photosystem II
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Wikipedia:Photosystem_II