HAMAP rule MF_00433
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 Cyanobacteriota Plastid |
| 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
[?]
| 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. |
Keywords
[?]
| Transport | |
| Photosynthesis | |
| Electron transport | |
| Membrane | |
| Transmembrane | |
| case <OC:Gloeobacter> | |
| Cell membrane | |
| Cell inner membrane | |
| else | |
| Thylakoid | |
| end case | |
| Transmembrane helix | |
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. |