EI24
Etoposide-induced protein 2.4 homolog
Also known as: EI24_HUMAN, EPG4, PIG8, TP53I8
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- O14681
- Gene
- EI24
- Ensembl
- ENSG00000149547
- Chromosome
- 11
- Canonical length
- 340 aa
- Protein class
- Cancer-related genes, Disease related genes, Potential drug targets, Predicted intracellular proteins, Predicted membrane proteins, Transporters
- Subcellular location
- Endoplasmic reticulum,Golgi apparatus,Cytosol
OverviewNCBI Gene
This gene encodes a putative tumor suppressor and has higher expression in p53-expressing cells than in control cells and is an immediate-early induction target of p53-mediated apoptosis. The encoded protein may suppress cell growth by inducing apoptotic cell death through the caspase 9 and mitochondrial pathways. This gene is located on human chromosome 11q24, a region frequently altered in cancers. Alternative splicing results in multiple transcript variants. Pseudogenes of this gene have been defined on chromosomes 1, 3, 7, and 8. [provided by RefSeq, Feb 2014]
Canonical amino-acid sequenceUniProt
340 residues, UniProt reviewed canonical sequence.
>O14681|EI24
1 MADSVKTFLQ DLARGIKDSI WGICTISKLD ARIQQKREEQ RRRRASSVLA QRRAQSIERK
61 QESEPRIVSR IFQCCAWNGG VFWFSLLLFY RVFIPVLQSV TARIIGDPSL HGDVWSWLEF
121 FLTSIFSALW VLPLFVLSKV VNAIWFQDIA DLAFEVSGRK PHPFPSVSKI IADMLFNLLL
181 QALFLIQGMF VSLFPIHLVG QLVSLLHMSL LYSLYCFEYR WFNKGIEMHQ RLSNIERNWP
241 YYFGFGLPLA FLTAMQSSYI ISGCLFSILF PLFIISANEA KTPGKAYLFQ LRLFSLVVFL
301 SNRLFHKTVY LQSALSSSTS AEKFPSPHPS PAKLKATAGHLocalizationUniProt · AlphaFold · HPA
Whether an antibody against EI24 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
- Other membrane
- Secreted
- No
- Transmembrane segments
- 5
- Mean surface accessibility (rSASA)
- 0.33
- Highest tissue expression
- 435 nTPM
Expression across tissuesHPA
Tissue
- parathyroid gland: 435 nTPM
- liver: 232 nTPM
- skeletal muscle: 119 nTPM
- pancreas: 98 nTPM
- tongue: 98 nTPM
- esophagus: 83 nTPM
Single-cell type
- hepatocytes: 700 nCPM
- oocytes: 345 nCPM
- esophageal suprabasal cells: 284 nCPM
- esophageal apical cells: 243 nCPM
- extravillous trophoblasts: 240 nCPM
- esophageal basal cells: 237 nCPM
Immune cell
- plasmacytoid DC: 15 nTPM
- myeloid DC: 11 nTPM
- T-reg: 9.1 nTPM
- memory CD8 T-cell: 9 nTPM
- memory B-cell: 8.4 nTPM
- naive CD4 T-cell: 8.1 nTPM
Brain region
- thalamus: 61 nTPM
- hypothalamus: 58 nTPM
- spinal cord: 56 nTPM
- midbrain: 56 nTPM
- basal ganglia: 54 nTPM
- amygdala: 53 nTPM
DiseaseUniProt · ClinVar · IEDB · PubMed
Four sources answering four different questions about EI24.
Disease | GeneticClinVar
1 pathogenic / likely-pathogenic of 36 ClinVar records.
Conditions with pathogenic or likely-pathogenic variants.
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)
- 0.42
- gnomAD pLI
- 0.73
- gnomAD missense Z
- 2
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
- apoptotic process
- cellular response to UV-C
- intrinsic apoptotic signaling pathway in response to DNA damage
- macroautophagy
- negative regulation of cell growth
- negative regulation of protein import into nucleus
- neuromuscular process controlling balance
- positive regulation of intrinsic apoptotic signaling pathway
- response to xenobiotic stimulus
Molecular functions
Cellular components
Protein domainsUniProt · Pfam · InterPro
- Sulfate transporter CysZ/Etoposide-induced protein 2.4
- Sulfate transporter CysZ/Etoposide-induced protein 2.4
KeywordsUniProt
InteractionsUniProt · HPA
Protein binding partners of EI24 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 EI24 as an antibody target. Whether an autoantibody or antibody against EI24 could matter depends on whether native EI24 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
EI24 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 EI24 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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