Term Information

Accession
GO:0009522
Name
photosystem I
Ontology
cellular_component
Synonyms
None
Alternate IDs
None
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). Source: GOC:ds, PMID:9821949, GOC:mah, ISBN:0140514031
Comment
None
History
See term history for GO:0009522 at QuickGO
Subset
None
Feedback
Comments, changes to terms, or requests for new ontology terms can be made at GO issue tracker on GitHub.

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Parents of photosystem I (GO:0009522)
subject[Reorder by subject] relation[Reorder by relation] object[Reorder by object]
photosystem I [is_a relation] is_a  photosystem (GO:0009521)
Children of photosystem I (GO:0009522)
subject[Reorder by subject] relation[Reorder by relation] object[Reorder by object]
photosystem I reaction center (GO:0009538) [BFO:0000050 relation] BFO:0000050  photosystem I
chloroplast photosystem I (GO:0030093) [is_a relation] is_a  photosystem I
photosystem I antenna complex (GO:0009782) [BFO:0000050 relation] BFO:0000050  photosystem I
plasma membrane-derived photosystem I (GO:0030094) [is_a relation] is_a  photosystem I
None.