Q45324 · OMP2B_BRUNE

  • Protein
    Porin Omp2b
  • Gene
    omp2b
  • Status
    UniProtKB reviewed (Swiss-Prot)
  • Amino acids
  • Protein existence
    Inferred from homology
  • Annotation score
    2/5

Function

function

Forms passive diffusion pores that allow small molecular weight hydrophilic materials across the outer membrane.

Miscellaneous

The pore formed by Omp2a is larger than the one formed by Omp2b. Omp2b pores have optimal permeability to allow growth and protection against harmful compounds. The larger pore formed by Omp2a may be advantageous for intracellular growth, when the bacterium is competing with the host cell for nutrients whose concentration is particularly low within the phagosome.

GO annotations

all annotationsall molecular functionvirus receptor activitydna bindingrna bindingcytoskeletal motor activitycatalytic activitygtpase activitystructural molecule activitytransporter activitycytoskeletal protein bindinglipid bindingcyclase activityantioxidant activityoxidoreductase activitytransferase activityhydrolase activitylyase activityisomerase activityligase activityprotein tag activitycargo receptor activityhistone bindingprotein folding chaperonetranslation regulator activitynutrient reservoir activityreceptor ligand activitymolecular transducer activitymolecular adaptor activitytoxin activitycell adhesion mediator activitymolecular function regulator activityvirus coreceptor activitycatalytic activity, acting on a proteincatalytic activity, acting on dnacatalytic activity, acting on rnamolecular carrier activitytranscription regulator activitygeneral transcription initiation factor activitymolecular sensor activitymolecular sequestering activityatp-dependent activityother molecular functionall biological processmitotic cell cyclecytokinesiscytoplasmic translationimmune system processmuscle system processcirculatory system processrenal system processrespiratory system processcarbohydrate metabolic processgeneration of precursor metabolites and energydna replicationdna repairdna recombinationchromatin organizationdna-templated transcriptionregulation of dna-templated transcriptiontrna metabolic processprotein foldingprotein glycosylationamino acid metabolic processmodified amino acid metabolic processlipid metabolic processvitamin metabolic processsulfur compound metabolic processintracellular protein transportnucleocytoplasmic transportautophagyinflammatory responsemitochondrion organizationcytoskeleton organizationmicrotubule-based movementperoxisome organizationlysosome organizationchromosome segregationcell adhesionestablishment or maintenance of cell polarityprogrammed cell deathphotosynthesismrna metabolic processsnrna metabolic processvesicle-mediated transportreproductive processdigestive system processsignalingcell differentiationprotein catabolic processextracellular matrix organizationregulatory ncrna-mediated gene silencingtelomere organizationcell junction organizationwound healingribosome biogenesiscilium organizationanatomical structure developmentcell motilitynervous system processendocrine processprotein maturationtransmembrane transportnucleobase-containing small molecule metabolic processhepaticobiliary system processmembrane organizationprotein-containing complex assemblycell wall organization or biogenesisnitrogen cycle metabolic processprotein localization to plasma membranedefense response to other organismdetoxificationmeiotic nuclear divisionmitotic nuclear divisionmitochondrial gene expressioncarbohydrate derivative metabolic processother biological processall cellular componentnuclear chromosomeextracellular regionextracellular spacecell wallnucleusnuclear envelopenucleoplasmchromosomenucleolusmitochondrionlysosomeendosomevacuoleperoxisomeendoplasmic reticulumgolgi apparatuslipid dropletmicrotubule organizing centercytosolribosomecytoskeletonplasma membraneciliumplastidthylakoidexternal encapsulating structureextracellular matrixcytoplasmic vesicleorganelleother cellular component
Cell color indicative of number of GO terms
AspectTerm
Cellular Componentcell outer membrane
Cellular Componentpore complex
Molecular Functionporin activity
Biological Processmonoatomic ion transport

Keywords

Names & Taxonomy

Protein names

  • Recommended name
    Porin Omp2b

Gene names

    • Name
      omp2b

Organism names

  • Taxonomic identifier
  • Taxonomic lineage
    Bacteria > Pseudomonadota > Alphaproteobacteria > Hyphomicrobiales > Brucellaceae > Brucella/Ochrobactrum group > Brucella

Accessions

  • Primary accession
    Q45324

Subcellular Location

Cell outer membrane
; Multi-pass membrane protein

Keywords

PTM/Processing

Features

Showing features for signal, chain.

TypeIDPosition(s)Description
Signal1-22
ChainPRO_000035401623-362Porin Omp2b

Interaction

Subunit

Homotrimer.

Family & Domains

Domain

Consists of 16-stranded beta-barrel sheets, with large surface-exposed loops, that form a transmembrane pore at the center of each barrel. The pore is partially ocluded by a peptide loop that folds into the pore lumen.

Sequence similarities

Belongs to the alphaproteobacteria porin family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Sequence processing
    The displayed sequence is further processed into a mature form.
  • Length
    362
  • Mass (Da)
    38,650
  • Last updated
    2008-11-25 v2
  • Checksum
    EA74ECEE354BB6C8
MNIKSLLLGSAAALVAASGAQAADAIVAPEPEAVEYVRVCDAYGAGYFYIPGTETCLRVHGYVRYDVKGGDDVYSGTDRNGWDKSARFALRVSTGSETELGTLKTFTELRFNYAANNSGVDGKYGNETSSGTVMEFAYIQLGGLRVGIDESEFHTFTGYLGDVINDDVISAGSYRTGKISYTFTGGNGFSAVIALEQGGDNDGGYTGTTNYHIDGYMPDVVGGLKYAGGWGSIAGVVAYDSVIEEWAAKVRGDVNITDQFSVWLQGAYSSAATPNQNYGQWGGDWAVWGGAKFIATEKATFNLQAAHDDWGKTAVTANVAYELVPGFTVAPEVSYTKFGGEWKNTVAEDNAWGGIVRFQRSF

Sequence caution

The sequence AAA67793.1 differs from that shown. Reason: Erroneous initiation

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
U26441
EMBL· GenBank· DDBJ
AAA67793.1
EMBL· GenBank· DDBJ
Genomic DNA Different initiation

Similar Proteins

Disclaimer

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