AC   MF_00433;
DC   Protein; auto
TR   HAMAP; MF_00433; -; 1; level=0
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Names: Cytb6_f_PetL
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ID   PETL
DE   RecName: Full=Cytochrome b6-f complex subunit 6;
DE   AltName: Full=Cytochrome b6-f complex subunit VI;
DE   AltName: Full=Cytochrome b6-f complex subunit PetL;
GN   Name=petL;
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CC   -!- FUNCTION: Component of the cytochrome b6-f complex, which mediates
CC       electron transfer between photosystem II (PSII) and photosystem I
CC       (PSI), cyclic electron flow around PSI, and state transitions. PetL is
CC       important for photoautotrophic growth as well as for electron transfer
CC       efficiency and stability of the cytochrome b6-f complex.
CC   -!- SUBUNIT: The 4 large subunits of the cytochrome b6-f complex are
CC       cytochrome b6, subunit IV (17 kDa polypeptide, PetD), cytochrome f and
CC       the Rieske protein, while the 4 small subunits are PetG, PetL, PetM and
CC       PetN. The complex functions as a dimer.
case <OG:Chloroplast>
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane; Single-
CC       pass membrane protein.
else case <OC:Gloeobacter>
CC   -!- SUBCELLULAR LOCATION: Cell inner membrane; Single-pass membrane
CC       protein.
else
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane; Single-pass membrane
CC       protein.
end case
CC   -!- SIMILARITY: Belongs to the PetL family.
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DR   Pfam; PF05115; PetL; 1; trigger=no
DR   General; Transmembrane; -; 1; trigger=yes
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KW   Transport
KW   Photosynthesis
KW   Electron transport
KW   Membrane
KW   Transmembrane
case <OC:Gloeobacter>
KW   Cell membrane
KW   Cell inner membrane
else
KW   Thylakoid
end case
KW   Transmembrane helix
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GO   GO:0045158; F:electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity
case <OG:Chloroplast>
GO   GO:0009535; C:chloroplast thylakoid membrane
else case <OC:Gloeobacter>
GO   GO:0005886; C:plasma membrane
else
GO   GO:0042651; C:thylakoid membrane
end case
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FT   None
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Size: 28-43;
Related: None;
Template: P50369; P83795;
Scope:
 Bacteria; Cyanobacteriota
 Plastid
Fusion:
 Nter: None
 Cter: None
Duplicate: None
Plasmid: 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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# Revision 1.42 2023/02/17
//