This term is obsolete.

GO:0009521 JSON

photosystem

Cellular Component

Definition (GO:0009521 GONUTS page)

A complex located in a photosynthetic membrane that consists of a photoreaction center associated with accessory pigments and electron carriers. Examples of this component are found in Arabidopsis thaliana and in photosynthetic bacterial and archaeal species. PMID:9821949

Secondary IDs

GO:0030090

536,855 annotations

Synonyms

Synonyms are alternative words or phrases closely related in meaning to the term name, with indication of the relationship between the name and synonym given by the synonym scope.

Synonym Type
reaction centre narrow
reaction center narrow

Ancestor Chart

Ancestor chart for GO:0009521
Chart options
Ancestor chart

Child Terms

This table lists all terms that are direct descendants (child terms) of GO:0009521

Child Term Relationship to
GO:0009521
photosystem II
is_a
photosystem I
is_a

Taxon Constraints

The use of this term should conform to the following taxon constraints:

Ancestor GO ID Ancestor GO Term Name Relationship Taxon ID Taxon Reference(s)
GO:0009521 photosystem Never in Taxon 33208 Metazoa
GO:0009521 photosystem Never in Taxon 4751 Fungi
GO:0009521 photosystem Only in Taxon 131567 cellular organisms

More information on taxon constraints in GO is available here

Annotation Blacklist

This list aims to correct incorrect annotations to UniProtKB accessions inferred from electronic annotation (IEA) methods that are supplied by the UniProt-GOA project to the GO Consortium:

Category Entity Type Entity ID Taxon ID Entity Name Ancestor GO ID Reason Rule/Method ID
IEA Review protein O63264 4957 ZBI1_ZYGBI GO:0016020 Proteins appear to be intron-encoded endonucleases that hit InterPro cytochrome b/b6 (IPR016175) and Di-haem cytochrome (IPR016174) entries. Communicated by InterPro 29-05-2012.
IEA Review protein P03879 559292 MBI4_YEAST GO:0016020 Proteins appear to be intron-encoded endonucleases that hit InterPro cytochrome b/b6 (IPR016175) and Di-haem cytochrome (IPR016174) entries. Communicated by InterPro 29-05-2012.
IEA Review protein P03880 162425 ANI1_EMEND GO:0016020 Proteins appear to be intron-encoded endonucleases that hit InterPro cytochrome b/b6 (IPR016175) and Di-haem cytochrome (IPR016174) entries. Communicated by InterPro 29-05-2012.
IEA Review protein P03882 559292 SCE1_YEAST GO:0016020 Proteins appear to be intron-encoded endonucleases that hit InterPro cytochrome b/b6 (IPR016175) and Di-haem cytochrome (IPR016174) entries. Communicated by InterPro 29-05-2012.
IEA Review protein Q0H8X2 237631 BI1_USTMA GO:0016020 Proteins appear to be intron-encoded endonucleases that hit InterPro cytochrome b/b6 (IPR016175) and Di-haem cytochrome (IPR016174) entries. Communicated by InterPro 29-05-2012.
IEA Review protein Q35127 367110 MBI1_NEUCR GO:0016020 Proteins appear to be intron-encoded endonucleases that hit InterPro cytochrome b/b6 (IPR016175) and Di-haem cytochrome (IPR016174) entries. Communicated by InterPro 29-05-2012.
NOT-qualified manual protein A0A8I6ARU6 10116 A0A8I6ARU6_RAT GO:0016020 1 NOT-qualified manual annotation exists with evidence code ECO:0000266 from this reference: GO_REF:0000096
NOT-qualified manual protein A6HKS9 10116 A6HKS9_RAT GO:0016020 1 NOT-qualified manual annotation exists with evidence code ECO:0000266 from this reference: GO_REF:0000096
NOT-qualified manual protein A6HKT1 10116 A6HKT1_RAT GO:0016020 1 NOT-qualified manual annotation exists with evidence code ECO:0000266 from this reference: GO_REF:0000096
NOT-qualified manual protein F7EZK6 10116 F7EZK6_RAT GO:0016020 1 NOT-qualified manual annotation exists with evidence code ECO:0000266 from this reference: GO_REF:0000096

Cross-references

Database ID Description
InterPro IPR000932 Photosystem antenna protein-like
InterPro IPR036001 Photosystem antenna protein-like superfamily
Wikipedia Photosystem

Co-occurring Terms

These tables show the number of times the term listed in the table has been co-annotated.

No co-occurrence statistics for GO:0009521 based on ALL annotations
The top 100 of 205 co-occurring terms
Co-occurring Term PR S% #Together #Compared
photosystem
46,480.40 100.00 4,194 4,194
photosynthetic electron transport chain
3,750.56 8.06 4,118 51,034
chlorophyll binding
1,499.92 3.23 4,194 129,966
plasma membrane-derived thylakoid membrane
933.40 1.93 1,413 70,363
photosynthesis, light reaction
835.41 1.80 4,194 233,344
plastid membrane
665.54 1.04 155 10,825
photosystem II
377.21 0.81 2,267 279,342
photosynthesis
242.97 0.52 3,924 750,658
plastid
217.80 0.47 1,721 367,283
photosynthetic electron transport in photosystem II
42.28 0.09 76 83,542
Totals 32223 72960650
No co-occurrence statistics for GO:0009521 based on MANUAL annotations
The top 0 of 0 co-occurring terms
Co-occurring Term PR S% #Together #Compared
Totals 0 0

GO Slims

This term is present in the following GO Consortium-maintained GO slims:

GO slim name Total Number of Terms in Slim
goslim_pir 439

Change Log

Timestamp Action Category Detail
2024-03-05 Added CONSTRAINT in_taxon NCBITaxon:131567 (cellular organisms)
2023-11-01 Added CONSTRAINT never_in_taxon NCBITaxon:4751 (Fungi)
2023-11-01 Added CONSTRAINT never_in_taxon NCBITaxon:33208 (Metazoa)
2019-09-12 Deleted RELATION is a GO:0044436 (obsolete thylakoid part)
2015-06-25 Deleted RELATION is a GO:0043234 (protein complex)
2015-06-25 Deleted RELATION is a GO:0044425 (obsolete membrane part)
2015-06-18 Added RELATION capable of part of GO:0015979 (photosynthesis)
2015-05-11 Added RELATION is a GO:0098796 (membrane protein complex)
2013-04-18 Updated SUBSET goslim_pir
2010-05-27 Added RELATION is a GO:0044436 (obsolete thylakoid part)
Timestamp Action Category Detail
2002-02-06 Updated TERM photosystem
2001-04-03 Updated TERM photosystem
2001-03-30 Added TERM photosystem
Timestamp Action Category Detail
2009-08-06 Added SYNONYM reaction center
2009-08-06 Deleted SYNONYM reaction centre (sensu Gram-negative Bacteria)
2009-08-06 Deleted SYNONYM reaction center (sensu Gram-negative Bacteria)
2009-08-06 Deleted SYNONYM reaction centre (sensu Proteobacteria)
2009-08-06 Deleted SYNONYM reaction center (sensu Proteobacteria)
2009-08-06 Added DEFINITION A complex located in a photosynthetic membrane that consists of a photoreaction center associated with accessory pigments and electron carriers. Examples of this component are found in Arabidopsis thaliana and in photosynthetic bacterial and archaeal species.
2009-08-06 Deleted DEFINITION A complex located in a photosynthetic membrane that consists of a photoreaction center associated with accessory pigments and electron carriers.
2009-08-06 Added SYNONYM reaction centre
2008-05-13 Added DEFINITION A complex located in a photosynthetic membrane that consists of a photoreaction center associated with accessory pigments and electron carriers.
2008-05-12 Deleted DEFINITION A complex located in a photosynthetic membrane that consists of a photoreaction center associated with accessory pigments and electron carriers.
2008-04-27 Updated DEFINITION A complex located in a photosynthetic membrane that consists of a photoreaction center associated with accessory pigments and electron carriers.
2008-04-06 Added SYNONYM reaction centre (sensu Gram-negative Bacteria)
2008-04-06 Added SYNONYM reaction center (sensu Proteobacteria)
2008-04-06 Added SYNONYM reaction center (sensu Gram-negative Bacteria)
2008-04-06 Added SYNONYM reaction centre (sensu Proteobacteria)
2001-08-06 Added DEFINITION One of the photochemical systems containing photosynthetic and accessory pigments and electron carriers that operate in sequence to perform the two light reactions of photosynthesis.
Timestamp Action Category Detail
2019-09-12 Deleted RELATION is a GO:0044436 (obsolete thylakoid part)
2015-06-25 Deleted RELATION is a GO:0043234 (protein complex)
2015-06-25 Deleted RELATION is a GO:0044425 (obsolete membrane part)
2015-06-18 Added RELATION capable of part of GO:0015979 (photosynthesis)
2015-05-11 Added RELATION is a GO:0098796 (membrane protein complex)
2010-05-27 Added RELATION is a GO:0044436 (obsolete thylakoid part)
2008-10-21 Added RELATION is a GO:0044425 (obsolete membrane part)
2008-04-06 Added RELATION part of GO:0034357 (photosynthetic membrane)
2008-04-06 Deleted RELATION is a GO:0044436 (obsolete thylakoid part)
2008-04-01 Updated RELATION is a GO:0043234 (protein complex)
2008-04-01 Updated RELATION is a GO:0044436 (obsolete thylakoid part)
Timestamp Action Category Detail
2009-02-08 Added XREF Wikipedia:Photosystem
Timestamp Action Category Detail
2024-03-05 Added CONSTRAINT in_taxon NCBITaxon:131567 (cellular organisms)
2023-11-01 Added CONSTRAINT never_in_taxon NCBITaxon:4751 (Fungi)
2023-11-01 Added CONSTRAINT never_in_taxon NCBITaxon:33208 (Metazoa)
2013-04-18 Updated SUBSET goslim_pir
2008-06-09 Added SUBSET goslim_pir
2008-04-06 Added SECONDARY GO:0030090 (reaction center (sensu Proteobacteria))
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