Q9HHS8 · GVPO2_HALSA
- ProteinGas vesicle protein O2
- GenegvpO2
- StatusUniProtKB reviewed (Swiss-Prot)
- Amino acids111 (go to sequence)
- Protein existenceEvidence at protein level
- Annotation score3/5
Function
function
A minor component of the gas vesicle (GV), also found in soluble extracts (PubMed:21158390).
May play a role in transcription and/or RNA stability and/or in GV assembly (By similarity).
Gas vesicles are hollow, gas filled proteinaceous nanostructures found in several microbial planktonic microorganisms. They allow positioning of halobacteria at the optimal depth for growth in the poorly aerated, shallow brine pools of their habitat (PubMed:33711860).
May play a role in transcription and/or RNA stability and/or in GV assembly (By similarity).
Gas vesicles are hollow, gas filled proteinaceous nanostructures found in several microbial planktonic microorganisms. They allow positioning of halobacteria at the optimal depth for growth in the poorly aerated, shallow brine pools of their habitat (PubMed:33711860).
Expression of 2 c-vac DNA fragments containing 2 divergently transcribed regions (gvpE-gvpF-gvpG-gvpH-gvpI-gvpJ-gvpK-gvpL-gvpM and gvpA-gvpC-gvpN-gvpO) allows H.volcanii to produce gas vesicles.
Miscellaneous
Encoded in a 14-gene locus called c-vac which produces cylindrical gas vesicles only in the stationary growth phase.
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 | cytoplasm | |
Cellular Component | gas vesicle | |
Biological Process | gas vesicle organization |
Names & Taxonomy
Protein names
- Recommended nameGas vesicle protein O2
- Short namesGvpO2
Gene names
Encoded on
- Plasmid pNRC200
Organism names
- Strains
- Taxonomic lineageArchaea > Euryarchaeota > Stenosarchaea group > Halobacteria > Halobacteriales > Halobacteriaceae > Halobacterium > Halobacterium salinarum NRC-34001
Accessions
- Primary accessionQ9HHS8
- Secondary accessions
Proteomes
Subcellular Location
PTM/Processing
Features
Showing features for chain.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Chain | PRO_0000182703 | 1-111 | Gas vesicle protein O2 | ||
Expression
Induction
In PHH4 (a deletion of the p-vac locus) not transcribed in exponential phase, transcribed from stationary to mid-stationary phase. Small amounts of longer transcripts that include gvpC-gvpN-gvpO and further downstream are also seen as well as short transcripts that only hybridize to this gene (PubMed:8763925).
Gas vesicles appear earlier when grown in static culture, possibly due to O2-limitation (PubMed:33711860).
Gas vesicles appear earlier when grown in static culture, possibly due to O2-limitation (PubMed:33711860).
Interaction
Subunit
Forms homodimers, forms a GvpN-GvpO heterodimer, interacts with GvpC, GvpF, GvpI and GvpL, might interact with GvpA.
Structure
Family & Domains
Features
Showing features for region.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Region | 1-31 | Disordered | |||
Sequence similarities
Belongs to the gas vesicle GvpO family.
Phylogenomic databases
Family and domain databases
Sequence
- Sequence statusComplete
- Length111
- Mass (Da)12,017
- Last updated2001-01-11 v1
- ChecksumB2D20A3F1AE48075
Features
Showing features for sequence conflict.
Type | ID | Position(s) | Description | ||
---|---|---|---|---|---|
Sequence conflict | 29 | in Ref. 1; CAA45995 and 2; CAA64342 | |||
Sequence conflict | 100-101 | in Ref. 1; CAA45995 and 2; CAA64342 | |||
Keywords
- Technical term
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
X64730 EMBL· GenBank· DDBJ | CAA45995.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
X94688 EMBL· GenBank· DDBJ | CAA64342.1 EMBL· GenBank· DDBJ | Genomic DNA | ||
AE004438 EMBL· GenBank· DDBJ | AAG20898.1 EMBL· GenBank· DDBJ | Genomic DNA |