HOXD8
Homeobox protein Hox-D8
Also known as: HOX4, HOX4E, HXD8_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- P13378
- Gene
- HOXD8
- Ensembl
- ENSG00000175879
- Chromosome
- 2
- Canonical length
- 290 aa
- Protein class
- Predicted intracellular proteins, Transcription factors
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 in a cluster on chromosome 2. Deletions that remove the entire HOXD gene cluster or the 5' end of this cluster have been associated with severe limb and genital abnormalities. In addition to effects during embryogenesis, this particular gene may also play a role in adult urogenital tract function. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Dec 2010]
Canonical amino-acid sequenceUniProt
290 residues, UniProt reviewed canonical sequence.
>P13378|HOXD8
1 MSSYFVNPLY SKYKAAAAAA AAAGEAINPT YYDCHFAPEV GGRHAAAAAA LQLYGNSAAG
61 FPHAPPQAHA HPHPSPPPSG TGCGGREGRG QEYFHPGGGS PAAAYQAAPP PPPHPPPPPP
121 PPPCGGIACH GEPAKFYGYD NLQRQPIFTT QQEAELVQYP DCKSSSGNIG EDPDHLNQSS
181 SPSQMFPWMR PQAAPGRRRG RQTYSRFQTL ELEKEFLFNP YLTRKRRIEV SHALALTERQ
241 VKIWFQNRRM KWKKENNKDK FPVSRQEVKD GETKKEAQEL EEDRAEGLTNLocalizationUniProt · AlphaFold · HPA
Whether an antibody against HOXD8 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)
- 0.64
- Highest tissue expression
- 94 nTPM
Expression across tissuesHPA
Tissue
- epididymis: 94 nTPM
- kidney: 71 nTPM
- ovary: 37 nTPM
- seminal vesicle: 23 nTPM
- adrenal gland: 19 nTPM
- endometrium: 19 nTPM
Single-cell type
- late primary spermatocytes: 166 nCPM
- epididymal principal cells: 143 nCPM
- early spermatids: 95 nCPM
- lymphatic endothelial cells: 88 nCPM
- distal convoluted tubule cells: 82 nCPM
- epididymal efferent duct ciliated cells: 56 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
- white matter: 12 nTPM
- spinal cord: 8.6 nTPM
- medulla oblongata: 3.3 nTPM
- pons: 0.7 nTPM
- cerebral cortex: 0.1 nTPM
- midbrain: 0.1 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)
- 0.85
- gnomAD pLI
- 0.11
- gnomAD missense Z
- -1.42
- DepMap mean gene effect
- -0.07
- DepMap dependency class
- none
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 5% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- anterior/posterior axis specification, embryo
- negative regulation of transcription by RNA polymerase II
- positive regulation of transcription by RNA polymerase II
- regulation of transcription by RNA polymerase II
- skeletal system morphogenesis
Molecular functions
- DNA-binding transcription activator activity, RNA polymerase II-specific
- DNA-binding transcription factor activity, RNA polymerase II-specific
- RNA polymerase II transcription regulatory region sequence-specific DNA binding
- sequence-specific double-stranded DNA binding
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads HOXD8 as an antibody target. Whether an autoantibody or antibody against HOXD8 could matter depends on whether native HOXD8 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
HOXD8 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 HOXD8 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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