Seroatlas · Human Serome Atlas

GBP3

Guanylate-binding protein 3

Also known as: FLJ10961, GBP3_HUMAN

Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene

Protein identityUniProt · HPA

UniProt accession
Q9H0R5
Gene
GBP3
Ensembl
ENSG00000117226
Chromosome
1
Canonical length
595 aa
Protein class
Predicted intracellular proteins

OverviewNCBI Gene

This gene encodes a member of the guanylate-binding protein (GBP) family. GBPs specifically bind guanine nucleotides (GMP, GDP, and GTP) and contain two of the three consensus motifs found in typical GTP-binding proteins. The encoded protein interacts with a member of the germinal center kinase family. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jan 2017]

Canonical amino-acid sequenceUniProt

595 residues, UniProt reviewed canonical sequence.

>Q9H0R5|GBP3
     1  MAPEIHMTGP MCLIENTNGE LVANPEALKI LSAITQPVVV VAIVGLYRTG KSYLMNKLAG
    61  KNKGFSLGST VKSHTKGIWM WCVPHPKKPE HTLVLLDTEG LGDVKKGDNQ NDSWIFTLAV
   121  LLSSTLVYNS MGTINQQAMD QLYYVTELTH RIRSKSSPDE NENEDSADFV SFFPDFVWTL
   181  RDFSLDLEAD GQPLTPDEYL EYSLKLTQGT SQKDKNFNLP RLCIRKFFPK KKCFVFDLPI
   241  HRRKLAQLEK LQDEELDPEF VQQVADFCSY IFSNSKTKTL SGGIKVNGPR LESLVLTYIN
   301  AISRGDLPCM ENAVLALAQI ENSAAVQKAI AHYDQQMGQK VQLPAETLQE LLDLHRVSER
   361  EATEVYMKNS FKDVDHLFQK KLAAQLDKKR DDFCKQNQEA SSDRCSALLQ VIFSPLEEEV
   421  KAGIYSKPGG YCLFIQKLQD LEKKYYEEPR KGIQAEEILQ TYLKSKESVT DAILQTDQIL
   481  TEKEKEIEVE CVKAESAQAS AKMVEEMQIK YQQMMEEKEK SYQEHVKQLT EKMERERAQL
   541  LEEQEKTLTS KLQEQARVLK ERCQGESTQL QNEIQKLQKT LKKKTKRYMS HKLKI

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against GBP3 can act on the native protein depends on physical access: surface and secreted proteins are reachable by circulating antibodies, intracellular proteins usually are not.

Antibody reachability
Other membrane
Secreted
No
Transmembrane segments
0
Mean surface accessibility (rSASA)
0.28
Highest tissue expression
74 nTPM

Expression across tissuesHPA

Tissue

  • duodenum: 74 nTPM
  • small intestine: 57 nTPM
  • colon: 37 nTPM
  • stomach: 30 nTPM
  • rectum: 26 nTPM
  • urinary bladder: 26 nTPM

Single-cell type

  • enterocytes: 128 nCPM
  • epididymal basal cells: 96 nCPM
  • salivary duct cells: 90 nCPM
  • colonocytes: 86 nCPM
  • foveolar cells: 79 nCPM
  • urothelial cells: 73 nCPM

Immune cell

  • non-classical monocyte: 14 nTPM
  • gdT-cell: 12 nTPM
  • MAIT T-cell: 11 nTPM
  • memory CD4 T-cell: 11 nTPM
  • memory CD8 T-cell: 10 nTPM
  • naive CD8 T-cell: 9.9 nTPM

Brain region

  • medulla oblongata: 8 nTPM
  • hypothalamus: 6.9 nTPM
  • white matter: 6.9 nTPM
  • pons: 5.8 nTPM
  • midbrain: 5.5 nTPM
  • spinal cord: 5.5 nTPM

Genetic constraint and essentialitygnomAD · DepMap

Does the body need this protein intact? Low LOEUF or a strong DepMap dependency means loss or blockade of the protein is likely to be felt.

gnomAD LOEUF (loss-of-function intolerance)
1.34
gnomAD pLI
0
gnomAD missense Z
-0.04
DepMap mean gene effect
0.03
DepMap dependency class
selective

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 4% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).

OntologyGO

Biological processes

Molecular functions

Cellular components

Protein domainsUniProt · Pfam · InterPro

KeywordsUniProt

InteractionsUniProt · HPA

Protein binding partners of GBP3 in the human serome: UniProt-annotated complex subunits plus reported interactors. Each links to its own Seroatlas record.

Antibody and autoantibody relevanceSeroatlas analysis

Seroatlas reads GBP3 as an antibody target. Whether an autoantibody or antibody against GBP3 could matter depends on whether native GBP3 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

GBP3 is annotated as predominantly intracellular. Intracellular proteins are common autoantibody markers, becoming visible to the immune system after cell injury or altered processing, but are usually markers of disease rather than direct drivers.

Annotation status

The present source text does not explicitly label GBP3 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/GBP3. Study-independent annotations aggregated from UniProt, Human Protein Atlas, PubMed, IEDB, Pfam, InterPro, Gene Ontology, AlphaFold, gnomAD, DepMap, ClinVar, TCGA. Catalog release seroatlas-reviewed-human-uniprot-20260313.

Seroatlas is the reference for exploring autoantibody and antibody serology at the human-protein level: the autoreactome and human serome, multiplex serology (HuProt, HuScan, VirScan, PhIP-Seq).

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