Seroatlas · Human Serome Atlas

HOXD3

Homeobox protein Hox-D3

Also known as: HOX1D, HOX4, HOX4A, HXD3_HUMAN

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

Protein identityUniProt · HPA

UniProt accession
P31249
Gene
HOXD3
Ensembl
ENSG00000128652
Chromosome
2
Canonical length
432 aa
Protein class
Predicted intracellular proteins, Transcription factors
Subcellular location
Nucleoplasm,Nuclear bodies

OverviewNCBI Gene

This gene belongs to the homeobox family of genes. The homeobox genes encode a highly conserved family of transcription factors that play an important role in morphogenesis in all multicellular organisms. Mammals possess four similar homeobox gene clusters, HOXA, HOXB, HOXC and HOXD, located on different chromosomes, consisting of 9 to 11 genes arranged in tandem. This gene is one of several homeobox HOXD genes located at 2q31-2q37 chromosome regions. Deletions that removed the entire HOXD gene cluster or 5' end of this cluster have been associated with severe limb and genital abnormalities. The protein encoded by this gene may play a role in the regulation of cell adhesion processes. [provided by RefSeq, Jul 2008]

Canonical amino-acid sequenceUniProt

432 residues, UniProt reviewed canonical sequence.

>P31249|HOXD3
     1  MLFEQGQQAL ELPECTMQKA AYYENPGLFG GYGYSKTTDT YGYSTPHQPY PPPAAASSLD
    61  TDYPGSACSI QSSAPLRAPA HKGAELNGSC MRPGTGNSQG GGGGSQPPGL NSEQQPPQPP
   121  PPPPTLPPSS PTNPGGGVPA KKPKGGPNAS SSSATISKQI FPWMKESRQN SKQKNSCATA
   181  GESCEDKSPP GPASKRVRTA YTSAQLVELE KEFHFNRYLC RPRRVEMANL LNLTERQIKI
   241  WFQNRRMKYK KDQKAKGILH SPASQSPERS PPLGGAAGHV AYSGQLPPVP GLAYDAPSPP
   301  AFAKSQPNMY GLAAYTAPLS SCLPQQKRYA APEFEPHPMA SNGGGFASAN LQGSPVYVGG
   361  NFVESMAPAS GPVFNLGHLS HPSSASVDYS CAAQIPGNHH HGPCDPHPTY TDLSAHHSSQ
   421  GRLPEAPKLT HL

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against HOXD3 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)
0.69
Highest tissue expression
39 nTPM

Expression across tissuesHPA

Tissue

  • epididymis: 39 nTPM
  • endometrium: 11 nTPM
  • kidney: 11 nTPM
  • ovary: 7.3 nTPM
  • seminal vesicle: 6.6 nTPM
  • fallopian tube: 6.4 nTPM

Single-cell type

  • epididymal principal cells: 214 nCPM
  • distal convoluted tubule cells: 190 nCPM
  • renal connecting tubule cells: 151 nCPM
  • renal collecting duct principal cells: 138 nCPM
  • epididymal efferent duct absorptive cells: 97 nCPM
  • lymphatic endothelial cells: 88 nCPM

Immune cell

  • basophil: 0 nTPM
  • classical monocyte: 0 nTPM
  • eosinophil: 0 nTPM
  • gdT-cell: 0 nTPM
  • intermediate monocyte: 0 nTPM
  • MAIT T-cell: 0 nTPM

Brain region

  • medulla oblongata: 19 nTPM
  • pons: 12 nTPM
  • spinal cord: 12 nTPM
  • white matter: 9.8 nTPM
  • midbrain: 1.3 nTPM
  • basal ganglia: 0.8 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)
0.55
gnomAD pLI
0.44
gnomAD missense Z
1.09
DepMap mean gene effect
0.09
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

Antibody and autoantibody relevanceSeroatlas analysis

Seroatlas reads HOXD3 as an antibody target. Whether an autoantibody or antibody against HOXD3 could matter depends on whether native HOXD3 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

HOXD3 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 HOXD3 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/HOXD3. 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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