Seroatlas · Human Serome Atlas

GDA

Guanine deaminase

Also known as: CYPIN, GAH, GUAD_HUMAN

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

Protein identityUniProt · HPA

UniProt accession
Q9Y2T3
Gene
GDA
Ensembl
ENSG00000119125
Chromosome
9
Canonical length
454 aa
Protein class
Enzymes, Metabolic proteins, Plasma proteins, Predicted intracellular proteins
Subcellular location
Nucleoplasm
Quaternary structure
Homodimer

OverviewNCBI Gene

This gene encodes an enzyme responsible for the hydrolytic deamination of guanine. Studies in rat ortholog suggest this gene plays a role in microtubule assembly. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Nov 2011]

Canonical amino-acid sequenceUniProt

454 residues, UniProt reviewed canonical sequence.

>Q9Y2T3|GDA
     1  MCAAQMPPLA HIFRGTFVHS TWTCPMEVLR DHLLGVSDSG KIVFLEEASQ QEKLAKEWCF
    61  KPCEIRELSH HEFFMPGLVD THIHASQYSF AGSSIDLPLL EWLTKYTFPA EHRFQNIDFA
   121  EEVYTRVVRR TLKNGTTTAC YFATIHTDSS LLLADITDKF GQRAFVGKVC MDLNDTFPEY
   181  KETTEESIKE TERFVSEMLQ KNYSRVKPIV TPRFSLSCSE TLMGELGNIA KTRDLHIQSH
   241  ISENRDEVEA VKNLYPSYKN YTSVYDKNNL LTNKTVMAHG CYLSAEELNV FHERGASIAH
   301  CPNSNLSLSS GFLNVLEVLK HEVKIGLGTD VAGGYSYSML DAIRRAVMVS NILLINKVNE
   361  KSLTLKEVFR LATLGGSQAL GLDGEIGNFE VGKEFDAILI NPKASDSPID LFYGDFFGDI
   421  SEAVIQKFLY LGDDRNIEEV YVGGKQVVPF SSSV

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against GDA 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
Intracellular
Secreted
No
Transmembrane segments
0
Mean surface accessibility (rSASA)
0.2
Highest tissue expression
89 nTPM

Expression across tissuesHPA

Tissue

  • small intestine: 89 nTPM
  • duodenum: 89 nTPM
  • cerebral cortex: 70 nTPM
  • liver: 57 nTPM
  • basal ganglia: 48 nTPM
  • amygdala: 47 nTPM

Single-cell type

  • endometrial luminal cells: 2,093 nCPM
  • enterocytes: 1,691 nCPM
  • endometrial glandular cells: 1,151 nCPM
  • endometrial ciliated cells: 906 nCPM
  • endometrial secretory cells: 844 nCPM
  • proximal tubule cells: 296 nCPM

Immune cell

  • basophil: 0.7 nTPM
  • naive B-cell: 0.3 nTPM
  • neutrophil: 0.3 nTPM
  • NK-cell: 0.3 nTPM
  • gdT-cell: 0.2 nTPM
  • naive CD8 T-cell: 0.2 nTPM

Brain region

  • basal ganglia: 100 nTPM
  • cerebral cortex: 91 nTPM
  • hypothalamus: 87 nTPM
  • hippocampal formation: 52 nTPM
  • white matter: 51 nTPM
  • amygdala: 35 nTPM

ReferencesPubMed · IEDB

Publications for GDA from three distinct lines of evidence, kept separate because they answer different questions: whether antibodies are directed at the protein, whether a B-cell epitope has been mapped on it, and whether a T-cell epitope has. Each is labelled with its source.

Reference: B cellIEDB

1 publication

Sources: PubMed — antigen-level antibody evidence from a custom retrieval. Records matching a controlled set of autoantibody terms (the MeSH descriptors Autoantibodies and Autoantigens, with title and abstract term variants) were obtained through NCBI E-utilities, and their titles and abstracts parsed for constructions that direct an antibody at a named protein rather than for co-occurrence. Captured names were resolved against UniProt nomenclature and each antigen adjudicated individually against the source text. IEDB — curated epitope assays from the Immune Epitope Database (Vita et al., Nucleic Acids Research 2019). Bibliographic records from PubMed and MeSH, U.S. National Library of Medicine; citation metrics from NIH iCite (Hutchins et al., PLoS Biology 2016). Titles link to PubMed; abstracts are not reproduced here. The NLM does not endorse this analysis.

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)
0.22
gnomAD pLI
1
gnomAD missense Z
1.46
DepMap mean gene effect
0.03
DepMap dependency class
none

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

GDA 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 GDA as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/GDA. 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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