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Annotation rule MF_00433 |
General rule information
[?]
Accession |
MF_00433 |
Dates |
1-JUN-2001 (Created) 18-NOV-2019 (Last updated, Version 39) |
Scope |
Bacteria; Cyanobacteria
Plastid |
Propagated annotation
[?]
Identifier, protein and gene names
[?]
Protein name |
RecName:
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Full=Cytochrome b6-f complex subunit 6;
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AltName:
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Full=Cytochrome b6-f complex subunit VI;
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AltName:
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Full=Cytochrome b6-f complex subunit PetL;
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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. PetL is important for photoautotrophic growth as well as for electron transfer efficiency and stability 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 PetL family. |
case <OC:Gloeobacter>
else
end case
GO:0045158; Molecular function: electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity.
GO:0055114; Biological process: oxidation-reduction process.
case <OG:Chloroplast>
GO:0009535; Cellular component: chloroplast thylakoid membrane.
else case <OC:Gloeobacter>
else
GO:0042651; Cellular component: thylakoid membrane.
end case
General |
Transmembrane; -; 1; trigger=yes; |
Additional information
[?]
Size range |
28-43 amino acids |
Related rules |
None |
Fusion |
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. |