CDX1
Homeobox protein CDX-1
Also known as: CDX1_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- P47902
- Gene
- CDX1
- Ensembl
- ENSG00000113722
- Chromosome
- 5
- Canonical length
- 265 aa
- Protein class
- Predicted intracellular proteins, Transcription factors
OverviewNCBI Gene
This gene is a member of the caudal-related homeobox transcription factor gene family. The encoded DNA-binding protein regulates intestine-specific gene expression and enterocyte differentiation. It has been shown to induce expression of the intestinal alkaline phosphatase gene, and inhibit beta-catenin/T-cell factor transcriptional activity. [provided by RefSeq, Jul 2008]
Canonical amino-acid sequenceUniProt
265 residues, UniProt reviewed canonical sequence.
>P47902|CDX1
1 MYVGYVLDKD SPVYPGPARP ASLGLGPQAY GPPAPPPAPP QYPDFSSYSH VEPAPAPPTA
61 WGAPFPAPKD DWAAAYGPGP AAPAASPASL AFGPPPDFSP VPAPPGPGPG LLAQPLGGPG
121 TPSSPGAQRP TPYEWMRRSV AAGGGGGSGK TRTKDKYRVV YTDHQRLELE KEFHYSRYIT
181 IRRKSELAAN LGLTERQVKI WFQNRRAKER KVNKKKQQQQ QPPQPPMAHD ITATPAGPSL
241 GGLCPSNTSL LATSSPMPVK EEFLPLocalizationUniProt · AlphaFold · HPA
Whether an antibody against CDX1 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)
- 0.66
- Highest tissue expression
- 93 nTPM
Expression across tissuesHPA
Tissue
- colon: 93 nTPM
- rectum: 83 nTPM
- small intestine: 67 nTPM
- duodenum: 45 nTPM
- appendix: 6.7 nTPM
- smooth muscle: 3.5 nTPM
Single-cell type
- colonocytes: 352 nCPM
- enteric transient amplifying cells: 284 nCPM
- enteric stem cells: 264 nCPM
- enterocytes: 176 nCPM
- paneth cells: 166 nCPM
- goblet cells: 156 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
- cerebral cortex: 0.2 nTPM
- amygdala: 0.1 nTPM
- choroid plexus: 0.1 nTPM
- hippocampal formation: 0.1 nTPM
- thalamus: 0.1 nTPM
- white matter: 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)
- 1.08
- gnomAD pLI
- 0.14
- gnomAD missense Z
- 0.06
- DepMap mean gene effect
- 0.08
- DepMap dependency class
- selective
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 3% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- animal organ morphogenesis
- anterior/posterior axis specification
- bone morphogenesis
- cell differentiation
- digestive tract development
- embryonic pattern specification
- positive regulation of transcription by RNA polymerase II
- regulation of somitogenesis
- regulation of transcription by RNA polymerase II
Molecular functions
- DNA-binding transcription activator activity, RNA polymerase II-specific
- DNA-binding transcription factor activity
- DNA-binding transcription factor activity, RNA polymerase II-specific
- methyl-CpG binding
- 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
- transcription cis-regulatory region binding
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of CDX1 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 CDX1 as an antibody target. Whether an autoantibody or antibody against CDX1 could matter depends on whether native CDX1 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
CDX1 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 CDX1 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
Loading the interactive Seroatlas protein explorer...