Seroatlas · Human Serome Atlas

HDGF

Hepatoma-derived growth factor

Also known as: HDGF_HUMAN, HMG1L2

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

Protein identityUniProt · HPA

UniProt accession
P51858
Gene
HDGF
Ensembl
ENSG00000143321
Chromosome
1
Canonical length
240 aa
Protein class
Plasma proteins, Predicted intracellular proteins, Predicted secreted proteins
Subcellular location
Nucleoplasm
Secretome location
Secreted to blood
Quaternary structure
Homodimer

OverviewNCBI Gene

This gene encodes a member of the hepatoma-derived growth factor family. The encoded protein has mitogenic and DNA-binding activity and may play a role in cellular proliferation and differentiation. High levels of expression of this gene enhance the growth of many tumors. This gene was thought initially to be located on chromosome X; however, that location has been determined to correspond to a related pseudogene. Alternatively spliced transcript variants encoding distinct isoforms have been described. [provided by RefSeq, Jan 2016]

Canonical amino-acid sequenceUniProt

240 residues, UniProt reviewed canonical sequence.

>P51858|HDGF
     1  MSRSNRQKEY KCGDLVFAKM KGYPHWPARI DEMPEAAVKS TANKYQVFFF GTHETAFLGP
    61  KDLFPYEESK EKFGKPNKRK GFSEGLWEIE NNPTVKASGY QSSQKKSCVE EPEPEPEAAE
   121  GDGDKKGNAE GSSDEEGKLV IDEPAKEKNE KGALKRRAGD LLEDSPKRPK EAENPEGEEK
   181  EAATLEVERP LPMEVEKNST PSEPGSGRGP PQEEEEEEDE EEEATKEDAE APGIRDHESL

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against HDGF 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
Secreted
Secreted
Yes
Transmembrane segments
0
Mean surface accessibility (rSASA)
0.58
Highest tissue expression
288 nTPM

Expression across tissuesHPA

Tissue

  • bone marrow: 288 nTPM
  • skeletal muscle: 219 nTPM
  • liver: 208 nTPM
  • esophagus: 176 nTPM
  • thymus: 147 nTPM
  • skin: 146 nTPM

Single-cell type

  • megakaryocytes: 408 nCPM
  • erythrocyte progenitors: 348 nCPM
  • gastric progenitor cells: 303 nCPM
  • platelets: 265 nCPM
  • fallopian tube ciliated cells: 201 nCPM
  • hepatocytes: 200 nCPM

Immune cell

  • plasmacytoid DC: 12 nTPM
  • myeloid DC: 12 nTPM
  • non-classical monocyte: 10 nTPM
  • classical monocyte: 9.9 nTPM
  • eosinophil: 9.2 nTPM
  • intermediate monocyte: 8.8 nTPM

Brain region

  • medulla oblongata: 88 nTPM
  • white matter: 83 nTPM
  • spinal cord: 77 nTPM
  • thalamus: 74 nTPM
  • midbrain: 74 nTPM
  • basal ganglia: 70 nTPM

ReferencesPubMed · IEDB

Publications for HDGF from three distinct lines of evidence, kept separate because they answer different questions: whether antibodies are directed at the protein, whether a B-cell epitope has been mapped on it, and whether a T-cell epitope has. Each is labelled with its source.

Reference: AutoantibodyPubMed

2 publications

Sources: PubMed — antigen-level antibody evidence from a custom retrieval. Records matching a controlled set of autoantibody terms (the MeSH descriptors Autoantibodies and Autoantigens, with title and abstract term variants) were obtained through NCBI E-utilities, and their titles and abstracts parsed for constructions that direct an antibody at a named protein rather than for co-occurrence. Captured names were resolved against UniProt nomenclature and each antigen adjudicated individually against the source text. Bibliographic records from PubMed and MeSH, U.S. National Library of Medicine; citation metrics from NIH iCite (Hutchins et al., PLoS Biology 2016). Titles link to PubMed; abstracts are not reproduced here. The NLM does not endorse this analysis.

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)
0.64
gnomAD pLI
0.27
gnomAD missense Z
1.25
DepMap mean gene effect
-0.06
DepMap dependency class
selective

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 12% 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 HDGF 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 HDGF as an antibody target. Whether an autoantibody or antibody against HDGF could matter depends on whether native HDGF is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

HDGF is annotated as secreted, so native HDGF circulates and is directly accessible to antibodies. Secreted and cell-surface proteins are the autoantibody targets most likely to act like drugs, blocking or depleting the native protein.

Annotation status

The present source text does not explicitly label HDGF as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/HDGF. 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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