Seroatlas · Human Serome Atlas

ELK3

ETS domain-containing protein Elk-3

Also known as: ELK3_HUMAN, ERP, NET, SAP2

Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene

Protein identityUniProt · HPA

UniProt accession
P41970
Gene
ELK3
Ensembl
ENSG00000111145
Chromosome
12
Canonical length
407 aa
Protein class
Cancer-related genes, Plasma proteins, Predicted intracellular proteins, Transcription factors
Subcellular location
Nucleoplasm,Mitochondria

OverviewNCBI Gene

This gene encodes a member of the ETS-domain transcription factor family and the ternary complex factor (TCF) subfamily. Proteins in this subfamily regulate transcription when recruited by serum response factor to bind to serum response elements. This protein is activated by signal-induced phosphorylation; studies in rodents suggest that it is a transcriptional inhibitor in the absence of Ras, but activates transcription when Ras is present. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Jan 2015]

Canonical amino-acid sequenceUniProt

407 residues, UniProt reviewed canonical sequence.

>P41970|ELK3
     1  MESAITLWQF LLQLLLDQKH EHLICWTSND GEFKLLKAEE VAKLWGLRKN KTNMNYDKLS
    61  RALRYYYDKN IIKKVIGQKF VYKFVSFPEI LKMDPHAVEI SRESLLLQDS DCKASPEGRE
   121  AHKHGLAALR STSRNEYIHS GLYSSFTINS LQNPPDAFKA IKTEKLEEPP EDSPPVEEVR
   181  TVIRFVTNKT DKHVTRPVVS LPSTSEAAAA SAFLASSVSA KISSLMLPNA ASISSASPFS
   241  SRSPSLSPNS PLPSEHRSLF LEAACHDSDS LEPLNLSSGS KTKSPSLPPK AKKPKGLEIS
   301  APPLVLSGTD IGSIALNSPA LPSGSLTPAF FTAQTPNGLL LTPSPLLSSI HFWSSLSPVA
   361  PLSPARLQGP STLFQFPTLL NGHMPVPIPS LDRAASPVLL SSNSQKS

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against ELK3 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)
0.63
Highest tissue expression
39 nTPM

Expression across tissuesHPA

Tissue

  • spleen: 39 nTPM
  • esophagus: 36 nTPM
  • lymph node: 35 nTPM
  • smooth muscle: 35 nTPM
  • tonsil: 35 nTPM
  • adipose tissue: 35 nTPM

Single-cell type

  • lymphatic endothelial cells: 470 nCPM
  • esophageal apical cells: 301 nCPM
  • vascular endothelial cells: 299 nCPM
  • epididymal basal cells: 279 nCPM
  • platelets: 269 nCPM
  • ocular epithelial cells: 263 nCPM

Immune cell

  • T-reg: 46 nTPM
  • MAIT T-cell: 43 nTPM
  • memory CD4 T-cell: 26 nTPM
  • classical monocyte: 23 nTPM
  • memory B-cell: 23 nTPM
  • NK-cell: 20 nTPM

Brain region

  • cerebellum: 37 nTPM
  • choroid plexus: 32 nTPM
  • medulla oblongata: 27 nTPM
  • thalamus: 26 nTPM
  • midbrain: 25 nTPM
  • pons: 25 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)
0.72
gnomAD pLI
0.08
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 4% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).

OntologyGO

Biological processes

Molecular functions

Cellular components

Protein domainsUniProt · Pfam · InterPro

KeywordsUniProt

InteractionsUniProt · HPA

Protein binding partners of ELK3 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 ELK3 as an antibody target. Whether an autoantibody or antibody against ELK3 could matter depends on whether native ELK3 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

ELK3 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 ELK3 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/ELK3. Study-independent annotations aggregated from UniProt, Human Protein Atlas, PubMed, IEDB, Pfam, InterPro, Gene Ontology, AlphaFold, gnomAD, DepMap, ClinVar, TCGA. Catalog release seroatlas-reviewed-human-uniprot-20260313.

Seroatlas is the reference for exploring autoantibody and antibody serology at the human-protein level: the autoreactome and human serome, multiplex serology (HuProt, HuScan, VirScan, PhIP-Seq).

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