P62096 · PSBF_PEA
- ProteinCytochrome b559 subunit beta
- GenepsbF
- StatusUniProtKB reviewed (Swiss-Prot)
- Amino acids
- Protein existenceEvidence at protein level
- Annotation score3/5
Function
function
This b-type cytochrome is tightly associated with the reaction center of photosystem II (PSII). PSII is a light-driven water:plastoquinone oxidoreductase that uses light energy to abstract electrons from H2O, generating O2 and a proton gradient subsequently used for ATP formation. It consists of a core antenna complex that captures photons, and an electron transfer chain that converts photonic excitation into a charge separation.
Cofactor
Note: With its partner (PsbE) binds heme. PSII binds additional chlorophylls, carotenoids and specific lipids.
Features
Showing features for binding site.
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | chloroplast thylakoid membrane | |
Cellular Component | photosystem II reaction center | |
Molecular Function | electron transfer activity | |
Molecular Function | heme binding | |
Molecular Function | iron ion binding | |
Biological Process | photosynthetic electron transport chain |
Keywords
- Biological process
- Ligand
Names & Taxonomy
Protein names
- Recommended nameCytochrome b559 subunit beta
- Alternative names
Gene names
Encoded on
- Chloroplast
Organism names
- Taxonomic lineageEukaryota > Viridiplantae > Streptophyta > Embryophyta > Tracheophyta > Spermatophyta > Magnoliopsida > eudicotyledons > Gunneridae > Pentapetalae > rosids > fabids > Fabales > Fabaceae > Papilionoideae > 50 kb inversion clade > NPAAA clade > Hologalegina > IRL clade > Fabeae > Pisum
Accessions
- Primary accessionP62096
- Secondary accessions
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 | 14-30 | Helical | ||||
Sequence: WLAVHGLAVPTVSFLGS |
Keywords
- Cellular component
PTM/Processing
Features
Showing features for chain.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Chain | PRO_0000200436 | 1-39 | Cytochrome b559 subunit beta | |||
Sequence: MTIDRTYPIFTVRWLAVHGLAVPTVSFLGSISAMQFIQR |
Interaction
Subunit
Heterodimer of an alpha subunit and a beta subunit. PSII is composed of 1 copy each of membrane proteins PsbA, PsbB, PsbC, PsbD, PsbE, PsbF, PsbH, PsbI, PsbJ, PsbK, PsbL, PsbM, PsbT, PsbX, PsbY, PsbZ, Psb30/Ycf12, at least 3 peripheral proteins of the oxygen-evolving complex and a large number of cofactors. It forms dimeric complexes.
Structure
Sequence
- Sequence statusComplete
- Length39
- Mass (Da)4,424
- Last updated1987-08-13 v1
- ChecksumF61251852D7E1D6F
Mass Spectrometry
Keywords
- Technical term
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
X15767 EMBL· GenBank· DDBJ | CAA33773.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
AY007482 EMBL· GenBank· DDBJ | AAG27011.1 EMBL· GenBank· DDBJ | Genomic DNA |