Seroatlas · Human Serome Atlas

PAX5

Paired box protein Pax-5

Also known as: BSAP, PAX-5, PAX5_HUMAN

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

Protein identityUniProt · HPA

UniProt accession
Q02548
Gene
PAX5
Ensembl
ENSG00000196092
Chromosome
9
Canonical length
391 aa
Protein class
Cancer-related genes, Disease related genes, Human disease related genes, Predicted intracellular proteins, Transcription factors
Subcellular location
Nucleoplasm

OverviewNCBI Gene

This gene encodes a member of the paired box (PAX) family of transcription factors. The central feature of this gene family is a novel, highly conserved DNA-binding motif, known as the paired box. Paired box transcription factors are important regulators in early development, and alterations in the expression of their genes are thought to contribute to neoplastic transformation. This gene encodes the B-cell lineage specific activator protein that is expressed at early, but not late stages of B-cell differentiation. Its expression has also been detected in developing CNS and testis and so the encoded protein may also play a role in neural development and spermatogenesis. This gene is located at 9p13, which is involved in t(9;14)(p13;q32) translocations recurring in small lymphocytic lymphomas of the plasmacytoid subtype, and in derived large-cell lymphomas. This translocation brings the potent E-mu enhancer of the IgH gene into close proximity of the PAX5 promoter, suggesting that the deregulation of transcription of this gene contributes to the pathogenesis of these lymphomas. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jul 2013]

Canonical amino-acid sequenceUniProt

391 residues, UniProt reviewed canonical sequence.

>Q02548|PAX5
     1  MDLEKNYPTP RTSRTGHGGV NQLGGVFVNG RPLPDVVRQR IVELAHQGVR PCDISRQLRV
    61  SHGCVSKILG RYYETGSIKP GVIGGSKPKV ATPKVVEKIA EYKRQNPTMF AWEIRDRLLA
   121  ERVCDNDTVP SVSSINRIIR TKVQQPPNQP VPASSHSIVS TGSVTQVSSV STDSAGSSYS
   181  ISGILGITSP SADTNKRKRD EGIQESPVPN GHSLPGRDFL RKQMRGDLFT QQQLEVLDRV
   241  FERQHYSDIF TTTEPIKPEQ TTEYSAMASL AGGLDDMKAN LASPTPADIG SSVPGPQSYP
   301  IVTGRDLAST TLPGYPPHVP PAGQGSYSAP TLTGMVPGSE FSGSPYSHPQ YSSYNDSWRF
   361  PNPGLLGSPY YYSAAARGAA PPAAATAYDR H

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against PAX5 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)
0.61
Highest tissue expression
37 nTPM

Expression across tissuesHPA

Tissue

  • lymph node: 37 nTPM
  • tonsil: 34 nTPM
  • spleen: 18 nTPM
  • appendix: 14 nTPM
  • bone marrow: 8.9 nTPM
  • small intestine: 6.1 nTPM

Single-cell type

  • b-cells: 496 nCPM
  • pituicytes/fscs: 27 nCPM
  • plasma cells: 19 nCPM
  • late spermatids: 16 nCPM
  • early spermatids: 13 nCPM
  • conjunctival goblet cells: 12 nCPM

Immune cell

  • memory B-cell: 39 nTPM
  • naive B-cell: 26 nTPM
  • basophil: 0.7 nTPM
  • total PBMC: 0.7 nTPM
  • NK-cell: 0.2 nTPM
  • non-classical monocyte: 0.2 nTPM

Brain region

  • midbrain: 14 nTPM
  • pons: 9.4 nTPM
  • thalamus: 3.7 nTPM
  • medulla oblongata: 2.3 nTPM
  • spinal cord: 1.4 nTPM
  • hypothalamus: 1.1 nTPM

DiseaseUniProt · ClinVar · IEDB · PubMed

Four sources answering four different questions about PAX5.

Disease | AllUniProt

Conditions PAX5 is implicated in, by any mechanism.

Disease | GeneticClinVar

18 pathogenic / likely-pathogenic of 605 ClinVar records.

Conditions with pathogenic or likely-pathogenic variants.

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)
0.17
gnomAD pLI
1
gnomAD missense Z
2.45
DepMap mean gene effect
-0.11
DepMap dependency class
selective

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 2% 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 PAX5 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 PAX5 as an antibody target. Whether an autoantibody or antibody against PAX5 could matter depends on whether native PAX5 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

PAX5 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 PAX5 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/PAX5. 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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