P18551 · GB_EHV1A

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
      GP14

Organism names

Accessions

  • Primary accession
    P18551

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 domain87-849Virion surface
Transmembrane850-870Helical
Topological domain871-980Intravirion

Keywords

PTM/Processing

Features

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

TypeIDPosition(s)Description
Signal1-86
ChainPRO_000003817187-980Envelope glycoprotein B
Disulfide bond140↔647
Disulfide bond157↔603
Glycosylation165N-linked (GlcNAc...) asparagine; by host
Disulfide bond231↔296
Glycosylation275N-linked (GlcNAc...) asparagine; by host
Glycosylation380N-linked (GlcNAc...) asparagine; by host
Disulfide bond389↔437
Glycosylation423N-linked (GlcNAc...) asparagine; by host
Glycosylation497N-linked (GlcNAc...) asparagine; by host
Glycosylation514N-linked (GlcNAc...) asparagine; by host
Glycosylation515N-linked (GlcNAc...) asparagine; by host
Glycosylation560N-linked (GlcNAc...) asparagine; by host
Disulfide bond668↔708
Glycosylation727N-linked (GlcNAc...) asparagine; by host
Glycosylation749N-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
Region1-20Disordered
Region88-118Disordered
Compositional bias95-111Polar residues
Region197-203Involved in fusion and/or binding to host membrane
Region282-290Involved in fusion and/or binding to host membrane
Compositional bias505-529Polar residues
Region505-535Disordered
Region794-847Hydrophobic membrane proximal region
Region823-843Hydrophobic membrane proximal region
Motif925-928Golgi targeting
Motif965-968Internalization 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
    980
  • Mass (Da)
    109,736
  • Last updated
    1990-11-01 v1
  • Checksum
    264D273CED70E5A1
MSSGCRSVGGSTWGNWRGDGGDLRQRRVLSPVCSAPAAGSWIGSQLGNVGNLLATPHPLGKPASSRVGTIVLACLLLFGSCVVRAVPTTPSPPTSTPTSMSTHSHGTVDPTLLPTETPDPLRLAVRESGILAEDGDFYTCPPPTGSTVVRIEPPRTCPKFDLGRNFTEGIAVIFKENIAPYKFRANVYYKDIVVTRVWKGYSHTSLSDRYNDRVPVSVEEIFGLIDSKGKCSSKAEYLRDNIMHHAYHDDEDEVELDLVPSKFATPGARAWQTTNDTTSYVGWMPWRHYTSTSVNCIVEEVEARSVYPYDSFALSTGDIVYASPFYGLRAAARIEHNSYAQDSFRQVEGYRPRDLDSKLQAEEPVTKNFITTPHVTVSWNWTEKKVEACTLTKWKEVDELVRDEFRGSYRFTIRSISSTFISNTTQFKLESAPLTECVSKEAKEAIDSIYKKQYESTHVFSGDVEYYLARGGFLIAFRPMLSNELARLYLNELVRSNRTYDLKNLLNPNANNNNNTTRRRRSLLSVPEPQPTQDGVHREQILHRLHKRAVEATAGTDSSNVTAKQLELIKTTSSIEFAMLQFAYDHIQSHVNEMLSRIATAWCTLQNKERTLWNEMVKINPSAIVSATLDERVAARVLGDVIAITHCAKIEGNVYLQNSMRSMDSNTCYSRPPVTFTITKNANNRGSIEGQLGEENEIFTERKLIEPCALNQKRYFKFGKEYVYYENYTFVRKVPPTEIEVISTYVELNLTLLEDREFLPLEVYTRAELEDTGLLDYSEIQRRNQLHALRFYDIDSVVNVDNTAVIMQGIASFFKGLGKVGEAVGTLVLAAAGAVVSTVSGIASFLNNPFGGLAIGLLVIAGLVAAFFAYRYVMQIRSNPMKALYPITTKALKNKAKTSYGQNEEDDGSDFDEAKLEEAREMIKYMSMVSALEKQEKKAIKKNSGVGLIASNVSKLALRRRGPKYTRLQQNDTMENEKMV

Features

Showing features for compositional bias.

TypeIDPosition(s)Description
Compositional bias95-111Polar residues
Compositional bias505-529Polar residues

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
M36298
EMBL· GenBank· DDBJ
AAA46068.1
EMBL· GenBank· DDBJ
Genomic DNA

Similar Proteins

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