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Annotation rule MF_01344
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General rule information [?]

Accession MF_01344
Dates 19-DEC-2005 (Created)
12-JAN-2021 (Last updated, Version 25)
Name Cytb6_f_subIV
Scope
Bacteria; Cyanobacteria
Plastid
Templates P83792 (PETD_MASLA); P23230 (PETD_CHLRE): [Recover all]
Triggered by

Propagated annotation [?]


Identifier, protein and gene names [?]

Identifier
PETD
Protein name
RecName: Full=Cytochrome b6-f complex subunit 4;
AltName: Full=17 kDa polypeptide;
Gene name
petD

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.
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; Multi-pass membrane protein.
else case <OC:Gloeobacter>
Subcellular location Cell inner membrane; Multi-pass membrane protein.
else
Subcellular location Cellular thylakoid membrane; Multi-pass membrane protein.
end case
Similarity Belongs to the cytochrome b family. PetD subfamily.

Keywords [?]

Electron transport
case <OC:Gloeobacter>
Cell membrane
Cell inner membrane
else
Thylakoid
end case
Membrane
Photosynthesis
Transmembrane
Transport
Transmembrane helix

Gene Ontology [?]

GO:0045158; Molecular function: electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity.
GO:0015979; Biological process: photosynthesis.
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 [?]

PROSITE PS51003; CYTB_CTER; 1;
Pfam PF00032; Cytochrom_B_C; 1;
TIGRFAMs TIGR01156; Cytb6/f_IV; 1;

Computed features [?]

General Transmembrane; -; 3; trigger=yes;

Additional information [?]

Size range 157-189 amino acids
Related rules None
Fusion None
Comments In barley and maize a longer, unspliced form of the gene is transcribed. It can also be predicted for at least rice and lettuce, and probably other Magnoliophytes. It is not known is this RNA is translated.


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