Seroatlas · Human Serome Atlas

FOXN3

Forkhead box protein N3

Also known as: C14orf116, CHES1, FOXN3_HUMAN

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

Protein identityUniProt · HPA

UniProt accession
O00409
Gene
FOXN3
Ensembl
ENSG00000053254
Chromosome
14
Canonical length
490 aa
Protein class
Predicted intracellular proteins, Transcription factors
Subcellular location
Nucleoplasm,Cytosol

OverviewNCBI Gene

This gene is a member of the forkhead/winged helix transcription factor family. Checkpoints are eukaryotic DNA damage-inducible cell cycle arrests at G1 and G2. Checkpoint suppressor 1 suppresses multiple yeast checkpoint mutations including mec1, rad9, rad53 and dun1 by activating a MEC1-independent checkpoint pathway. Alternative splicing is observed at the locus, resulting in distinct isoforms. [provided by RefSeq, Jul 2008]

Canonical amino-acid sequenceUniProt

490 residues, UniProt reviewed canonical sequence.

>O00409|FOXN3
     1  MGPVMPPSKK PESSGISVSS GLSQCYGGSG FSKALQEDDD LDFSLPDIRL EEGAMEDEEL
    61  TNLNWLHESK NLLKSFGESV LRSVSPVQDL DDDTPPSPAH SDMPYDARQN PNCKPPYSFS
   121  CLIFMAIEDS PTKRLPVKDI YNWILEHFPY FANAPTGWKN SVRHNLSLNK CFKKVDKERS
   181  QSIGKGSLWC IDPEYRQNLI QALKKTPYHP HPHVFNTPPT CPQAYQSTSG PPIWPGSTFF
   241  KRNGALLQDP DIDAASAMML LNTPPEIQAG FPPGVIQNGA RVLSRGLFPG VRPLPITPIG
   301  VTAAMRNGIT SCRMRTESEP SCGSPVVSGD PKEDHNYSSA KSSNARSTSP TSDSISSSSS
   361  SADDHYEFAT KGSQEGSEGS EGSFRSHESP SDTEEDDRKH SQKEPKDSLG DSGYASQHKK
   421  RQHFAKARKV PSDTLPLKKR RTEKPPESDD EEMKEAAGSL LHLAGIRSCL NNITNRTAKG
   481  QKEQKETTKN

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against FOXN3 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)
0.61
Highest tissue expression
79 nTPM

Expression across tissuesHPA

Tissue

  • bone marrow: 79 nTPM
  • skeletal muscle: 75 nTPM
  • tongue: 68 nTPM
  • parathyroid gland: 44 nTPM
  • adipose tissue: 44 nTPM
  • blood vessel: 44 nTPM

Single-cell type

  • microglia: 827 nCPM
  • choroid plexus epithelial cells: 742 nCPM
  • respiratory secretory cells: 701 nCPM
  • pituitary stem cells: 652 nCPM
  • neutrophils: 643 nCPM
  • renal collecting duct intercalated cells: 566 nCPM

Immune cell

  • basophil: 49 nTPM
  • gdT-cell: 42 nTPM
  • T-reg: 36 nTPM
  • eosinophil: 36 nTPM
  • memory CD8 T-cell: 36 nTPM
  • naive CD4 T-cell: 36 nTPM

Brain region

  • cerebellum: 198 nTPM
  • choroid plexus: 110 nTPM
  • medulla oblongata: 86 nTPM
  • thalamus: 85 nTPM
  • pons: 85 nTPM
  • spinal cord: 81 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)
0.36
gnomAD pLI
0.93
gnomAD missense Z
2.28
DepMap mean gene effect
-0.1
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 FOXN3 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 FOXN3 as an antibody target. Whether an autoantibody or antibody against FOXN3 could matter depends on whether native FOXN3 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

FOXN3 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 FOXN3 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/FOXN3. 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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