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Annotation rule MF_00432
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General rule information [?]

Accession MF_00432
Dates 18-AUG-2001 (Created)
18-NOV-2019 (Last updated, Version 41)
Name Cytb6_f_PetG
Scope
Bacteria; Cyanobacteria
Plastid
Template Q08362 (PETG_CHLRE)

Propagated annotation [?]


Identifier, protein and gene names [?]

Identifier
PETG
Protein name
RecName: Full=Cytochrome b6-f complex subunit 5;
AltName: Full=Cytochrome b6-f complex subunit V;
AltName: Full=Cytochrome b6-f complex subunit PetG;
Gene name
petG

Comments [?]

Function Component of the cytochrome b6-f complex, which mediates electron transfer between photosystem II (PSII) and photosystem I (PSI), cyclic electron flow around PSI, and state transitions. PetG is required for either the stability or assembly of the cytochrome b6-f complex.
Subunit The 4 large subunits of the cytochrome b6-f complex are cytochrome b6, subunit IV (17 kDa polypeptide, PetD), cytochrome f and the Rieske protein, while the 4 small subunits are PetG, PetL, PetM and PetN. The complex functions as a dimer.
case <OG:Chloroplast>
Subcellular location Plastid, chloroplast thylakoid membrane; Single-pass membrane protein.
else case <OC:Gloeobacter>
Subcellular location Cell inner membrane; Single-pass membrane protein.
else
Subcellular location Cellular thylakoid membrane; Single-pass membrane protein.
end case
Similarity Belongs to the PetG family.

Keywords [?]

case <OC:Gloeobacter>
else
end case

Gene Ontology [?]

GO:0045158; Molecular function: electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity.
GO:0017004; Biological process: cytochrome complex assembly.
GO:0055114; Biological process: oxidation-reduction process.
case <OG:Chloroplast>
GO:0009535; Cellular component: chloroplast thylakoid membrane.
else case <OC:Gloeobacter>
GO:0005886; Cellular component: plasma membrane.
else
GO:0042651; Cellular component: thylakoid membrane.
end case

Cross-references [?]

Pfam PF02529; PetG; 1;

Features [?]

From: PETG_SYNY3 (P74149)
Key     From     To       Description   Tag   Condition   FTGroup
TRANSMEM     5     25       Helical        

Additional information [?]

Size range 33-40 amino acids
Related rules None
Fusion None