D0VWR2 · PSBO_THEVL
- ProteinPhotosystem II extrinsic protein O
- GenepsbO
- StatusUniProtKB reviewed (Swiss-Prot)
- Amino acids244 (go to sequence)
- Protein existenceEvidence at protein level
- Annotation score3/5
Function
function
One of the extrinsic, lumenal subunits of photosystem II (PSII), which stabilize and protect the oxygen-evolving complex. PSII is a light-driven water plastoquinone oxidoreductase, using light energy to abstract electrons from H2O, generating a proton gradient subsequently used for ATP formation (PubMed:19433803, PubMed:21499260, PubMed:23426624).
Required for dimerization of PSII and for binding of PsbQ to PSII (By similarity).
Required for dimerization of PSII and for binding of PsbQ to PSII (By similarity).
Cofactor
Note: PSII binds multiple chlorophylls, carotenoids and specific lipids.
GO annotations
all annotations | all molecular function | virus receptor activity | dna binding | rna binding | cytoskeletal motor activity | catalytic activity | gtpase activity | structural molecule activity | transporter activity | cytoskeletal protein binding | lipid binding | cyclase activity | antioxidant activity | oxidoreductase activity | transferase activity | hydrolase activity | lyase activity | isomerase activity | ligase activity | protein tag activity | cargo receptor activity | histone binding | protein folding chaperone | translation regulator activity | nutrient reservoir activity | receptor ligand activity | molecular transducer activity | molecular adaptor activity | toxin activity | cell adhesion mediator activity | molecular function regulator activity | virus coreceptor activity | catalytic activity, acting on a protein | catalytic activity, acting on dna | catalytic activity, acting on rna | molecular carrier activity | transcription regulator activity | general transcription initiation factor activity | molecular sensor activity | molecular sequestering activity | atp-dependent activity | other molecular function | all biological process | mitotic cell cycle | cytokinesis | cytoplasmic translation | immune system process | muscle system process | circulatory system process | renal system process | respiratory system process | carbohydrate metabolic process | generation of precursor metabolites and energy | dna replication | dna repair | dna recombination | chromatin organization | dna-templated transcription | regulation of dna-templated transcription | trna metabolic process | protein folding | protein glycosylation | amino acid metabolic process | modified amino acid metabolic process | lipid metabolic process | vitamin metabolic process | sulfur compound metabolic process | intracellular protein transport | nucleocytoplasmic transport | autophagy | inflammatory response | mitochondrion organization | cytoskeleton organization | microtubule-based movement | peroxisome organization | lysosome organization | chromosome segregation | cell adhesion | establishment or maintenance of cell polarity | programmed cell death | photosynthesis | mrna metabolic process | snrna metabolic process | vesicle-mediated transport | reproductive process | digestive system process | signaling | cell differentiation | protein catabolic process | extracellular matrix organization | regulatory ncrna-mediated gene silencing | telomere organization | cell junction organization | wound healing | ribosome biogenesis | cilium organization | anatomical structure development | cell motility | nervous system process | endocrine process | protein maturation | transmembrane transport | nucleobase-containing small molecule metabolic process | hepaticobiliary system process | membrane organization | protein-containing complex assembly | cell wall organization or biogenesis | nitrogen cycle metabolic process | protein localization to plasma membrane | defense response to other organism | detoxification | meiotic nuclear division | mitotic nuclear division | mitochondrial gene expression | carbohydrate derivative metabolic process | other biological process | all cellular component | nuclear chromosome | extracellular region | extracellular space | cell wall | nucleus | nuclear envelope | nucleoplasm | chromosome | nucleolus | mitochondrion | lysosome | endosome | vacuole | peroxisome | endoplasmic reticulum | golgi apparatus | lipid droplet | microtubule organizing center | cytosol | ribosome | cytoskeleton | plasma membrane | cilium | plastid | thylakoid | external encapsulating structure | extracellular matrix | cytoplasmic vesicle | organelle | other cellular component | |||
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Aspect | Term | |
---|---|---|
Cellular Component | photosystem II oxygen evolving complex | |
Cellular Component | plasma membrane-derived thylakoid membrane | |
Molecular Function | oxygen evolving activity | |
Biological Process | photosystem II assembly | |
Biological Process | photosystem II stabilization |
Keywords
- Biological process
- Ligand
Names & Taxonomy
Protein names
- Recommended namePhotosystem II extrinsic protein O
- Short namesPsbO
- Alternative names
Gene names
Organism names
- Taxonomic lineageBacteria > Cyanobacteriota > Cyanophyceae > Thermostichales > Thermostichaceae > Thermostichus
Accessions
- Primary accessionD0VWR2
Subcellular Location
UniProt Annotation
GO Annotation
Cellular thylakoid membrane ; Peripheral membrane protein
Keywords
- Cellular component
PTM/Processing
Features
Showing features for chain.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Chain | PRO_0000422603 | 1-244 | Photosystem II extrinsic protein O | |||
Sequence: QTLTYDDIVGTGLANKCPTLDDTARGAYPIDSSQTYRIARLCLQPTTFLVKEEPKNKRQEAEFVPTKLVTRETTSLDQIQGELKVNSDGSLTFVEEDGIDFQPVTVQMAGGERIPLLFTVKNLVASTQPNVTSITTSTDFKGEFNVPSYRTANFLDPKGRGLASGYDSAIALPQAKEEELARANVKRFSLTKGQISLNVAKVDGRTGEIAGTFESEQLSDDDMGAHEPHEVKIQGVFYASIEPA |
Interaction
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, peripheral proteins PsbO, CyanoQ (PsbQ), PsbU, PsbV and a large number of cofactors. It forms dimeric complexes.
Protein-protein interaction databases
Structure
Sequence
- Sequence statusComplete
- Length244
- Mass (Da)26,625
- Last updated2013-05-29 v2
- ChecksumFDD2B35B7A9B820A
Keywords
- Technical term