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GO:0009523 photosystem II

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.

Term Information

ID GO:0009523
Name photosystem II
Ontology Cellular Component
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.
Comment

Cross-references associated with this term:

Database ID
INTERPRO IPR009518
Wikipedia Photosystem_II
INTERPRO IPR009388
INTERPRO IPR007826
INTERPRO IPR013082
INTERPRO IPR013081
INTERPRO IPR001056
INTERPRO IPR009806

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Ancestor Table

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GO:0005575 cellular_component
GO:0005623 cell
GO:0032991 macromolecular complex
GO:0043234 protein complex
GO:0044464 cell part
GO:0016020 membrane
GO:0005622 intracellular
GO:0044424 intracellular part
GO:0044425 membrane part
GO:0009579 thylakoid
GO:0034357 photosynthetic membrane
GO:0009521 photosystem
GO:0009523 photosystem II

Relationship key

Code Relationship
part of
is a
regulates
+ve regulates
-ve regulates

Child Terms

All direct descendants (child terms) available for this GO term:
P GO:0009539 photosystem II reaction center
I GO:0030095 chloroplast photosystem II
I GO:0030096 plasma membrane-derived thylakoid photosystem II
P GO:0009783 photosystem II antenna complex
P GO:0009654 oxygen evolving complex

Relationship key

CodeRelationship
Ppart of
Iis a

Protein Annotation

DB
ID
Qualifier colocalizes_with contributes_to NOT NOT|colocalizes_with NOT|contributes_to
GO Term
Reference
Evidence IMP IGI IPI IGC ISS IDA IEP IEA TAS NAS ND IC RCA ISA EXP
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Taxonomy
From
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Co-occurring Terms

Co-occurrence statistics

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IMP IGI IPI IGC ISS IDA IEP IEA TAS NAS ND IC RCA ISA EXP Statistics may take up to 1 minute to calculate
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