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GO:0019684 photosynthesis, light reaction

The light reactions of photosynthesis, which take place in photosystems II and I. Light energy is harvested and used to power the transfer of electrons among a series of electron donors and acceptors. The final electron acceptor is NADP+, which is reduced to NADPH. NADPH generated from light reactions is used in sugar synthesis in dark reactions. Light reactions also generate a proton motive force across the thylakoid membrane, and the proton gradient is used to synthesize ATP. There are two chemical reactions involved in the light reactions: water oxidation in photosystem II, and NADP reduction in photosystem I.

Term Information

ID GO:0019684
Name photosynthesis, light reaction
Ontology Biological Process
Definition The light reactions of photosynthesis, which take place in photosystems II and I. Light energy is harvested and used to power the transfer of electrons among a series of electron donors and acceptors. The final electron acceptor is NADP+, which is reduced to NADPH. NADPH generated from light reactions is used in sugar synthesis in dark reactions. Light reactions also generate a proton motive force across the thylakoid membrane, and the proton gradient is used to synthesize ATP. There are two chemical reactions involved in the light reactions: water oxidation in photosystem II, and NADP reduction in photosystem I.
Comment

Synonyms

Type Synonym
exact photolysis

Cross-references associated with this term:

Database ID
INTERPRO IPR006241
INTERPRO IPR002362
INTERPRO IPR002361
Wikipedia Photolysis#Photolysis_in_photosynthesis
MetaCyc PWY-101
INTERPRO IPR006217
INTERPRO IPR003158
INTERPRO IPR005652
INTERPRO IPR000484
INTERPRO IPR007826
INTERPRO IPR000932
INTERPRO IPR006216
INTERPRO IPR014747
INTERPRO IPR005871
INTERPRO IPR005781
INTERPRO IPR005867
INTERPRO IPR000066
INTERPRO IPR015810
INTERPRO IPR005868
INTERPRO IPR005869

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Ancestor Table

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GO:0008150 biological_process
GO:0008152 metabolic process
GO:0009987 cellular process
GO:0044237 cellular metabolic process
GO:0015979 photosynthesis
GO:0006091 generation of precursor metabolites and energy
GO:0019684 photosynthesis, light reaction

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:0010207 photosystem II assembly
P GO:0009765 photosynthesis, light harvesting
P GO:0009766 primary charge separation
P GO:0009767 photosynthetic electron transport chain
P GO:0009777 photosynthetic phosphorylation
P GO:0009780 photosynthetic NADP+ reduction
P GO:0048564 photosystem I assembly
R GO:0042548 regulation of photosynthesis, light reaction
NR GO:0043155 negative regulation of photosynthesis, light reaction

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
With
Taxonomy
From
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Co-occurring Terms

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