H6SYQ6 · H6SYQ6_9POAL
- ProteinCytochrome f
- GenepetA
- StatusUniProtKB unreviewed (TrEMBL)
- Organism
- Amino acids320 (go to sequence)
- Protein existenceInferred from homology
- Annotation score2/5
Function
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.
Cofactor
Note: Binds 1 heme group covalently.
Features
Showing features for binding site.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Binding site | 36 | Fe (UniProtKB | ChEBI) of heme (UniProtKB | ChEBI); axial binding residue | ||||
Sequence: Y | ||||||
Binding site | 56 | heme (UniProtKB | ChEBI); covalent | ||||
Sequence: C | ||||||
Binding site | 59 | heme (UniProtKB | ChEBI); covalent | ||||
Sequence: C | ||||||
Binding site | 60 | Fe (UniProtKB | ChEBI) of heme (UniProtKB | ChEBI); axial binding residue | ||||
Sequence: H |
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | chloroplast thylakoid membrane | |
Molecular Function | electron transfer activity | |
Molecular Function | heme binding | |
Molecular Function | iron ion binding | |
Biological Process | photosynthesis |
Keywords
- Biological process
- Ligand
Names & Taxonomy
Protein names
- Recommended nameCytochrome f
Gene names
Encoded on
- Plastid
Organism names
- Organism
- Taxonomic lineageEukaryota > Viridiplantae > Streptophyta > Embryophyta > Tracheophyta > Spermatophyta > Magnoliopsida > Liliopsida > Poales > Flagellariaceae > Flagellaria
Accessions
- Primary accessionH6SYQ6
Subcellular Location
UniProt Annotation
GO Annotation
Membrane ; Single-pass membrane protein
Plastid, chloroplast thylakoid membrane ; Single-pass membrane protein
Features
Showing features for transmembrane.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Transmembrane | 286-305 | Helical | ||||
Sequence: IQGLLFFFASVILAQVFLVL |
Keywords
- Cellular component
Interaction
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.
Structure
Family & Domains
Features
Showing features for domain.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Domain | 36-190 | Cytochrome f large | ||||
Sequence: YPIFAQQGYENPREATGRIVCANCHLANKPVDIEVPQAVLPDTVFEAVVRIPYDMQLKQVLANGKRGGLNVGAVLILPEGFELAPPDRISPELKEKIGNLSFQSYRPDKKNILVIGPLPGQKYSEIVFPILSPDPATKKDVHFLKYPIYVGGNRG |
Sequence similarities
Belongs to the cytochrome f family.
Keywords
- Domain
Family and domain databases
Sequence
- Sequence statusFragment
- Length320
- Mass (Da)35,441
- Last updated2012-04-18 v1
- ChecksumF08C34679A5651F8
Features
Showing features for non-terminal residue.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Non-terminal residue | 320 | |||||
Sequence: F |