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HAMAP rule MF_00433

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General rule information [?]

Accession MF_00433
Dates 1-JUN-2001 (Created)
17-FEB-2023 (Last updated, Version 42)
Name Cytb6_f_PetL
Scope(s) Bacteria
Template(s) P50369 (PETL_CHLRE); P83795 (PETL_MASLA); [ Recover all ]
Triggered by HAMAP; MF_00433 (Get profile general information and statistics)

Propagated annotation [?]

Identifier, protein and gene names [?]

Identifier PETL
Protein name RecName: Full=Cytochrome b6-f complex subunit 6;
AltName: Full=Cytochrome b6-f complex subunit VI;
AltName: Full=Cytochrome b6-f complex subunit PetL;
Gene name Name=petL;

Comments [?]

FUNCTIONComponent 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. PetL is important for photoautotrophic growth as well as for electron transfer efficiency and stability of the cytochrome b6-f complex.
SUBUNITThe 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 LOCATIONPlastid, chloroplast thylakoid membrane; Single- pass membrane protein.
else case <OC:Gloeobacter>
SUBCELLULAR LOCATIONCell inner membrane; Single-pass membrane protein.
SUBCELLULAR LOCATIONCellular thylakoid membrane; Single-pass membrane protein.
end case
SIMILARITYBelongs to the PetL family.

Keywords [?]

Gene Ontology [?]

GO:0045158; Molecular function:electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity
case <OG:Chloroplast>
GO:0009535; Cellular component:chloroplast thylakoid membrane
else case <OCellular component:Gloeobacter>
GO:0005886; Cellular component:plasma membrane
else; https://www.ebi.ac.uk/QuickGO/term/else
GO:0042651; Cellular component:thylakoid membrane
end case

Cross-references [?]

Pfam PF05115; PetL; 1;
General Transmembrane; -; 1;

Features [?]

Additional information [?]

Size range 28-43 amino acids
Related rules None
Fusion Nter: None Cter: None
Comments Subject to RNA editing in many seed plants; the start and stop codons are created by RNA editing in all conifers examined so far. Is essential in C. reinhardtii, but not required for photosynthesis in N. tabacum. Additionally, some cyanobacteria, for example Synechocystis, do not have this protein.

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