HOXD9
Homeobox protein Hox-D9
Also known as: HOX4, HOX4C, HXD9_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- P28356
- Gene
- HOXD9
- Ensembl
- ENSG00000128709
- Chromosome
- 2
- Canonical length
- 352 aa
- Protein class
- Predicted intracellular proteins, Transcription factors
- Subcellular location
- Nucleoplasm,Nucleoli
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 exact role of this gene has not been determined. [provided by RefSeq, Jul 2008]
Canonical amino-acid sequenceUniProt
352 residues, UniProt reviewed canonical sequence.
>P28356|HOXD9
1 MLGGSAGRLK MSSSGTLSNY YVDSLIGHEG DEVFAARFGP PGPGAQGRPA GVADGPAATA
61 AEFASCSFAP RSAVFSASWS AVPSQPPAAA AMSGLYHPYV PPPPLAASAS EPGRYVRSWM
121 EPLPGFPGGA GGGGGGGGGG PGRGPSPGPS GPANGRHYGI KPETRAAPAP ATAASTTSSS
181 STSLSSSSKR TECSVARESQ GSSGPEFSCN SFLQEKAAAA TGGTGPGAGI GAATGTGGSS
241 EPSACSDHPI PGCSLKEEEK QHSQPQQQQL DPNNPAANWI HARSTRKKRC PYTKYQTLEL
301 EKEFLFNMYL TRDRRYEVAR ILNLTERQVK IWFQNRRMKM KKMSKEKCPK GDLocalizationUniProt · AlphaFold · HPA
Whether an antibody against HOXD9 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)
- 0.68
- Highest tissue expression
- 59 nTPM
Expression across tissuesHPA
Tissue
- endometrium: 59 nTPM
- kidney: 49 nTPM
- cervix: 41 nTPM
- vagina: 34 nTPM
- prostate: 31 nTPM
- colon: 29 nTPM
Single-cell type
- distal convoluted tubule cells: 49 nCPM
- renal connecting tubule cells: 47 nCPM
- lymphatic endothelial cells: 44 nCPM
- epididymal principal cells: 40 nCPM
- vascular endothelial cells: 30 nCPM
- renal collecting duct principal cells: 28 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: 1.6 nTPM
- spinal cord: 1.2 nTPM
- medulla oblongata: 1.1 nTPM
- thalamus: 0.2 nTPM
- amygdala: 0.1 nTPM
- cerebellum: 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)
- 1.07
- gnomAD pLI
- 0.02
- gnomAD missense Z
- 0.58
- DepMap mean gene effect
- -0.06
- DepMap dependency class
- selective
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
- adult locomotory behavior
- anterior/posterior pattern specification
- DNA-templated transcription
- embryonic forelimb morphogenesis
- embryonic skeletal system morphogenesis
- hindlimb morphogenesis
- mammary gland development
- negative regulation of transcription by RNA polymerase II
- peripheral nervous system neuron development
- positive regulation of transcription by RNA polymerase II
- proximal/distal pattern formation
- regulation of transcription by RNA polymerase II
- single fertilization
- skeletal muscle tissue development
Molecular functions
- DNA-binding transcription factor activity
- DNA-binding transcription factor activity, RNA polymerase II-specific
- DNA-binding transcription repressor activity, RNA polymerase II-specific
- RNA polymerase II cis-regulatory region sequence-specific DNA binding
- 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 HOXD9 as an antibody target. Whether an autoantibody or antibody against HOXD9 could matter depends on whether native HOXD9 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
HOXD9 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 HOXD9 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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