EPO
Erythropoietin
Also known as: EP, EPO_HUMAN
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- P01588
- Gene
- EPO
- Ensembl
- ENSG00000130427
- Chromosome
- 7
- Canonical length
- 193 aa
- Protein class
- Cancer-related genes, Candidate cardiovascular disease genes, Disease related genes, Human disease related genes, Predicted secreted proteins
- Secretome location
- Secreted to blood
OverviewNCBI Gene
This gene encodes a secreted, glycosylated cytokine composed of four alpha helical bundles. The encoded protein is mainly synthesized in the kidney, secreted into the blood plasma, and binds to the erythropoietin receptor to promote red blood cell production, or erythropoiesis, in the bone marrow. Expression of this gene is upregulated under hypoxic conditions, in turn leading to increased erythropoiesis and enhanced oxygen-carrying capacity of the blood. Expression of this gene has also been observed in brain and in the eye, and elevated expression levels have been observed in diabetic retinopathy and ocular hypertension. Recombinant forms of the encoded protein exhibit neuroprotective activity against a variety of potential brain injuries, as well as antiapoptotic functions in several tissue types, and have been used in the treatment of anemia and to enhance the efficacy of cancer therapies. [provided by RefSeq, Aug 2017]
Canonical amino-acid sequenceUniProt
193 residues, UniProt reviewed canonical sequence.
>P01588|EPO
1 MGVHECPAWL WLLLSLLSLP LGLPVLGAPP RLICDSRVLE RYLLEAKEAE NITTGCAEHC
61 SLNENITVPD TKVNFYAWKR MEVGQQAVEV WQGLALLSEA VLRGQALLVN SSQPWEPLQL
121 HVDKAVSGLR SLTTLLRALG AQKEAISPPD AASAAPLRTI TADTFRKLFR VYSNFLRGKL
181 KLYTGEACRT GDRLocalizationUniProt · AlphaFold · HPA
Whether an antibody against EPO 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
- Unknown
- Secreted
- No
- Transmembrane segments
- 0
- Mean surface accessibility (rSASA)
- 0.36
- Highest tissue expression
- 34 nTPM
Expression across tissuesHPA
Tissue
- liver: 34 nTPM
- pancreas: 6.1 nTPM
- cervix: 2.8 nTPM
- kidney: 2.2 nTPM
- endometrium: 1.3 nTPM
- salivary gland: 1.1 nTPM
Single-cell type
- pancreatic acinar cells: 22 nCPM
- extravillous trophoblasts: 18 nCPM
- hepatocytes: 6.8 nCPM
- hepatic stellate cells: 6.5 nCPM
- migrating cytotrophoblasts: 3.6 nCPM
- cytotrophoblasts: 3.2 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
- hypothalamus: 0.7 nTPM
- cerebellum: 0.2 nTPM
- cerebral cortex: 0.2 nTPM
- medulla oblongata: 0.2 nTPM
- pons: 0.2 nTPM
- amygdala: 0.1 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about EPO.
Disease | GeneticClinVar
3 pathogenic / likely-pathogenic of 60 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
- Erythrocytosis, familial, 5
- Diamond-Blackfan anemia-like
Disease | ImmuneIEDB
Conditions an epitope on EPO was assayed in.
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)
- 0.9
- gnomAD pLI
- 0.01
- gnomAD missense Z
- 0.56
- DepMap mean gene effect
- 0.01
- 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).
InteractionsUniProt · HPA
Protein binding partners of EPO 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 EPO as an antibody target. Whether an autoantibody or antibody against EPO could matter depends on whether native EPO is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
EPO 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 EPO as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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