Q0P3K3 · CYF_OSTTA
- ProteinCytochrome f
- GenepetA
- StatusUniProtKB reviewed (Swiss-Prot)
- Organism
- Amino acids307 (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 | 25 | Fe (UniProtKB | ChEBI) of heme (UniProtKB | ChEBI); axial binding residue | ||||
Sequence: Y | ||||||
Binding site | 45 | heme (UniProtKB | ChEBI); covalent | ||||
Sequence: C | ||||||
Binding site | 48 | heme (UniProtKB | ChEBI); covalent | ||||
Sequence: C | ||||||
Binding site | 49 | Fe (UniProtKB | ChEBI) of heme (UniProtKB | ChEBI); axial binding residue | ||||
Sequence: H |
GO annotations
all annotations | all molecular function | nucleotide binding | molecular_function | nucleic acid binding | dna binding | chromatin binding | dna-binding transcription factor activity | rna binding | cytoskeletal motor activity | catalytic activity | nuclease activity | signaling receptor binding | structural molecule activity | transporter activity | binding | protein binding | translation factor activity, rna binding | lipid binding | kinase activity | transferase activity | hydrolase activity | oxygen binding | enzyme regulator activity | carbohydrate binding | signaling receptor activity | translation regulator activity | transcription regulator activity | other molecular function | all biological process | carbohydrate metabolic process | generation of precursor metabolites and energy | nucleobase-containing compound metabolic process | dna metabolic process | translation | lipid metabolic process | transport | response to stress | cell cycle | cell communication | signal transduction | cell-cell signaling | multicellular organism development | circadian rhythm | biological_process | metabolic process | catabolic process | biosynthetic process | response to light stimulus | response to external stimulus | tropism | response to biotic stimulus | response to abiotic stimulus | response to endogenous stimulus | embryo development | post-embryonic development | fruit ripening | abscission | pollination | flower development | cellular process | programmed cell death | photosynthesis | cellular component organization | cell growth | protein metabolic process | cellular homeostasis | secondary metabolic process | reproductive process | cell differentiation | protein modification process | growth | epigenetic regulation of gene expression | response to chemical | anatomical structure development | regulation of molecular function | other biological process | all cellular component | cellular_component | extracellular region | cell wall | intracellular anatomical structure | nucleus | nuclear envelope | nucleoplasm | nucleolus | cytoplasm | mitochondrion | lysosome | endosome | vacuole | peroxisome | endoplasmic reticulum | golgi apparatus | cytosol | ribosome | cytoskeleton | plasma membrane | chloroplast | plastid | thylakoid | membrane | external encapsulating structure | other cellular component | |||
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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
- Chloroplast
Organism names
- Organism
- Strain
- Taxonomic lineageEukaryota > Viridiplantae > Chlorophyta > Mamiellophyceae > Mamiellales > Bathycoccaceae > Ostreococcus
Accessions
- Primary accessionQ0P3K3
Proteomes
Subcellular Location
UniProt Annotation
GO Annotation
Plastid, chloroplast thylakoid membrane ; Single-pass membrane protein
Features
Showing features for transmembrane.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Transmembrane | 273-293 | Helical | ||||
Sequence: LQGLVIFLGFVLIAQVFLVLK |
Keywords
- Cellular component
PTM/Processing
Features
Showing features for signal, chain.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Signal | 1-24 | |||||
Sequence: MKKNLFLVSVFASLFVGTANNALA | ||||||
Chain | PRO_0000275435 | 25-307 | Cytochrome f | |||
Sequence: YPMYAQQGYENPREATGRIVCANCHLAQKPVDIEVPQAVLPDSVFEAVVKIPYNQEVKQVLGNGKKGGLNVGAVLILPDGFTMAPADRMSAELKEKVGKLYFQPYSEDKQNILIVGPVPGKKYSEMTFPLLSPDPATNKKVNYLTYPIYLGGNRGRGQVYPDGSKSNNTVYNAAAAGKIAAINPTEKGTDVVIDKVDGGSVTVAIPSGPDLLVSVGDTVAADQPITNNPNVGGFGQGETEIVLQNPARLQGLVIFLGFVLIAQVFLVLKKKQFEKVQLSEMNF |
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 (By similarity).
Protein-protein interaction databases
Structure
Sequence
- Sequence statusComplete
- Sequence processingThe displayed sequence is further processed into a mature form.
- Length307
- Mass (Da)32,963
- Last updated2006-09-19 v1
- ChecksumF130A6EE725F8905
Keywords
- Technical term
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
CR954199 EMBL· GenBank· DDBJ | CAL36374.1 EMBL· GenBank· DDBJ | Genomic DNA |