FB2025_05 , released December 11, 2025
FB2025_05 , released December 11, 2025
CV Term Report
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General Information
Term photosystem I ID (Ontology) GO:0009522 (Gene Ontology)
Definition A photosystem that contains an iron-sulfur reaction center associated with accessory pigments and electron carriers. In cyanobacteria and chloroplasts, photosystem I functions as a light-dependent plastocyanin-ferredoxin oxidoreductase, transferring electrons from plastocyanin to ferredoxin; in photosynthetic bacteria that have only a single type I photosystem, such as the green sulfur bacteria, electrons can go either to ferredoxin (Fd) -> NAD+ or to menaquinone (MK) -> Cytb/FeS -> Cytc555 -> photosystem I (cyclic photophosphorylation).[ ISBN:0140514031 PubMed:9821949 ]
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  membrane protein complex
   |__photosystem
       |__photosystem I
           |__chloroplast photosystem I
           |__plasma membrane-derived photosystem I
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