Seroatlas · Human Serome Atlas

DNAJC28

DnaJ homolog subfamily C member 28

Also known as: C21orf55, C21orf78, DJC28_HUMAN

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

Protein identityUniProt · HPA

UniProt accession
Q9NX36
Gene
DNAJC28
Ensembl
ENSG00000177692
Chromosome
21
Canonical length
388 aa
Protein class
Predicted intracellular proteins
Subcellular location
Nucleoplasm,Nuclear bodies,Centrosome,Cytosol

OverviewNCBI Gene

This gene encodes a member of the DnaJ heat shock protein family. The encoded protein, which contains a conserved N-terminal DnaJ domain, is thought to play a role in protein folding or act as a molecular chaperone protein. [provided by RefSeq, Oct 2016]

Canonical amino-acid sequenceUniProt

388 residues, UniProt reviewed canonical sequence.

>Q9NX36|DNAJC28
     1  MNTMYVMMAQ ILRSHLIKAT VIPNRVKMLP YFGIIRNRMM STHKSKKKIR EYYRLLNVEE
    61  GCSADEVRES FHKLAKQYHP DSGSNTADSA TFIRIEKAYR KVLSHVIEQT NASQSKGEEE
   121  EDVEKFKYKT PQHRHYLSFE GIGFGTPTQR EKHYRQFRAD RAAEQVMEYQ KQKLQSQYFP
   181  DSVIVKNIRQ SKQQKITQAI ERLVEDLIQE SMAKGDFDNL SGKGKPLKKF SDCSYIDPMT
   241  HNLNRILIDN GYQPEWILKQ KEISDTIEQL REAILVSRKK LGNPMTPTEK KQWNHVCEQF
   301  QENIRKLNKR INDFNLIVPI LTRQKVHFDA QKEIVRAQKI YETLIKTKEV TDRNPNNLDQ
   361  GEGEKTPEIK KGFLNWMNLW KFIKIRSF

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against DNAJC28 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)
0.46
Highest tissue expression
6.3 nTPM

Expression across tissuesHPA

Tissue

  • testis: 6.3 nTPM
  • heart muscle: 2.6 nTPM
  • cerebellum: 2.5 nTPM
  • cerebral cortex: 2.5 nTPM
  • skeletal muscle: 2.5 nTPM
  • kidney: 2.4 nTPM

Single-cell type

  • bergmann glia: 5.5 nCPM
  • choroid plexus epithelial cells: 5.1 nCPM
  • brain excitatory neurons: 4.4 nCPM
  • proximal tubule cells: 4.4 nCPM
  • other brain neurons: 4.1 nCPM
  • brain inhibitory neurons: 4 nCPM

Immune cell

  • NK-cell: 0.2 nTPM
  • classical monocyte: 0.1 nTPM
  • eosinophil: 0.1 nTPM
  • neutrophil: 0.1 nTPM
  • plasmacytoid DC: 0.1 nTPM
  • basophil: 0 nTPM

Brain region

  • cerebral cortex: 3.2 nTPM
  • cerebellum: 2.9 nTPM
  • pons: 2.7 nTPM
  • white matter: 2.7 nTPM
  • thalamus: 2.6 nTPM
  • amygdala: 2.5 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)
1.39
gnomAD pLI
0
gnomAD missense Z
0.02
DepMap mean gene effect
0.01
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).

Protein domainsUniProt · Pfam · InterPro

KeywordsUniProt

Antibody and autoantibody relevanceSeroatlas analysis

Seroatlas reads DNAJC28 as an antibody target. Whether an autoantibody or antibody against DNAJC28 could matter depends on whether native DNAJC28 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

DNAJC28 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 DNAJC28 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/DNAJC28. 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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