P12640 · GB_BHV1C

Function

function

Envelope glycoprotein that forms spikes at the surface of virion envelope. Essential for the initial attachment to heparan sulfate moieties of the host cell surface proteoglycans. Involved in fusion of viral and cellular membranes leading to virus entry into the host cell. Following initial binding to its host receptors, membrane fusion is mediated by the fusion machinery composed at least of gB and the heterodimer gH/gL. May be involved in the fusion between the virion envelope and the outer nuclear membrane during virion egress.

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 Componenthost cell endosome membrane
Cellular Componenthost cell Golgi membrane
Cellular Componenthost cell plasma membrane
Cellular Componentmembrane
Cellular Componentviral envelope
Cellular Componentvirion membrane
Biological Processsymbiont entry into host cell
Biological Processvirion attachment to host cell

Keywords

Names & Taxonomy

Protein names

  • Recommended name
    Envelope glycoprotein B
  • Short names
    gB

Gene names

    • Name
      gB
    • Synonyms
      GI
    • ORF names
      UL27

Organism names

Accessions

  • Primary accession
    P12640

Subcellular Location

Virion membrane
; Single-pass type I membrane protein
Host cell membrane
; Single-pass type I membrane protein
Host endosome membrane
; Single-pass type I membrane protein
Host Golgi apparatus membrane
; Single-pass type I membrane protein
Note: During virion morphogenesis, this protein probably accumulates in the endosomes and trans-Golgi where secondary envelopment occurs. It is probably transported to the cell surface from where it is endocytosed and directed to the trans-Golgi network (TGN).

Features

Showing features for topological domain, transmembrane.

TypeIDPosition(s)Description
Topological domain63-806Virion surface
Transmembrane807-827Helical
Topological domain828-932Intravirion

Keywords

PTM/Processing

Features

Showing features for signal, chain, glycosylation, disulfide bond.

TypeIDPosition(s)Description
Signal1-62
ChainPRO_000003816863-932Envelope glycoprotein B
Glycosylation105N-linked (GlcNAc...) asparagine; by host
Disulfide bond128↔607
Disulfide bond145↔563
Glycosylation153N-linked (GlcNAc...) asparagine; by host
Disulfide bond218↔282
Disulfide bond375↔423
Glycosylation441N-linked (GlcNAc...) asparagine; by host
Glycosylation483N-linked (GlcNAc...) asparagine; by host
Disulfide bond628↔665
Glycosylation640N-linked (GlcNAc...) asparagine; by host
Glycosylation706N-linked (GlcNAc...) asparagine; by host

Post-translational modification

A proteolytic cleavage by host furin generates two subunits that remain linked by disulfide bonds.

Keywords

PTM databases

Interaction

Subunit

Homotrimer; disulfide-linked. Binds to heparan sulfate proteoglycans. Interacts with gH/gL heterodimer.

Structure

3D structure databases

Family & Domains

Features

Showing features for region, compositional bias, motif.

TypeIDPosition(s)Description
Region1-25Disordered
Region67-105Disordered
Compositional bias69-97Pro residues
Region184-190Involved in fusion and/or binding to host membrane
Region269-276Involved in fusion and/or binding to host membrane
Region492-527Disordered
Region751-804Hydrophobic membrane proximal region
Region784-804Hydrophobic membrane proximal region
Motif880-883Golgi targeting
Motif921-924Internalization motif

Sequence similarities

Belongs to the herpesviridae glycoprotein B family.

Keywords

Family and domain databases

Sequence

  • Sequence status
    Complete
  • Sequence processing
    The displayed sequence is further processed into a mature form.
  • Length
    932
  • Mass (Da)
    101,196
  • Last updated
    1989-10-01 v1
  • Checksum
    9DCEAA85C5FC3DA3
MAARGGAERAAGAGDGRRGQRRHLRPGRVLAALRGPAAPGAGGARAALAAALLWATWALLLAAPAAGRPATTPPAPPPEEAASPAPPASPSPPGPDGDDAASPDNSTDVRAALRLAQAAGENSRFFVCPPPSGATVVRLAPARPCPEYGLGRNYTEGIGVIYKENIAPYTFKAYIYKNVIVTTTWAGSTYAAITNQYTDRVPVGMGEITDLVDKKWRCLSKAEYLRSGRKVVAFDRDDDPWEAPLKPARLSAPGVRGWHTTDDVYTALGSAGLYRTGTSVNCIVEEVEARSVYPYDSFALSTGDIIYMSPFYGLREGAHREHTSYSPERFQQIEGYYKRDMATGRRLKEPVSRNFLRTQHVTVAWDWVPKRKNVCSLAKWREADEMLRDESRGNFRFTARSLSATFVSDSHTFALQNVPLSDCVIEEAEAAVERVYRERYNGTHVLSGSLETYLARGGFVVAFRPMLSNELAKLYLQELARSNGTLEGLFAAAAPKPGPRRARRAAPSAPGGPGAANGPAGDGDAGGRVTTVSSAEFAALQFTYDHIQDHVNTMFSRLATSWCLLQNKERALWAEAAKLNPSAAASAALDRRAAARMLGDAMAVTYCHELGEGRVFIENSMRAPGGVCYSRPPVSFAFGNESEPVEGQLGEDNELLPGRELVEPCTANHKRYFRFGADYVYYENYAYVRRVPLAELEVISTFVDLNLTVLEDREFLPLEVYTRAELADTGLLDYSEIQRRNQLHELRFYDIDRVVKTDGNMAIMRGLANFFQGLGAVGQAVGTVVLGAAGAALSTVSGIASFIANPFGALATGLLVLAGLVAAFLAYRYISRLRSNPMKALYPITTRALKDDARGATAPGEEEEEFDAAKLEQAREMIKYMSLVSAVERQEHKAKKSNKGGPLLATRLTQLALRRRAPPEYQQLPMADVGGA

Features

Showing features for compositional bias.

TypeIDPosition(s)Description
Compositional bias69-97Pro residues

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
M21474
EMBL· GenBank· DDBJ
AAA46055.1
EMBL· GenBank· DDBJ
Genomic DNA
Z78205
EMBL· GenBank· DDBJ
CAB01598.1
EMBL· GenBank· DDBJ
Genomic DNA
AJ004801
EMBL· GenBank· DDBJ
CAA06106.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

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