Seroatlas · Human Serome Atlas

ZSCAN20

Zinc finger and SCAN domain-containing protein 20

Also known as: KOX29, ZNF31, ZNF360, ZSC20_HUMAN

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

Protein identityUniProt · HPA

UniProt accession
P17040
Gene
ZSCAN20
Ensembl
ENSG00000121903
Chromosome
1
Canonical length
1043 aa
Protein class
Predicted intracellular proteins, Transcription factors
Subcellular location
Nucleoplasm

OverviewNCBI Gene

Predicted to enable DNA-binding transcription factor activity, RNA polymerase II-specific and RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Predicted to be involved in regulation of transcription by RNA polymerase II. Predicted to be located in nucleus. [provided by Alliance of Genome Resources, Jul 2025]

Canonical amino-acid sequenceUniProt

1043 residues, UniProt reviewed canonical sequence.

>P17040|ZSCAN20
     1  MAMALELQAQ ASPQPEPEEL LIVKLEEDSW GSESKLWEKD RGSVSGPEAS RQRFRQFQYR
    61  DAAGPHEAFS QLWALCCRWL RPEIRLKEQI LELLVLEQFL TILPREVQTW VQARHPESGE
   121  EAVALVEDWH RETRTAGQSG LELHTEETRP LKTGEEAQSF QLQPVDPWPE GQSQKKGVKN
   181  TCPDLPNHLN AEVAPQPLKE SAVLTPRVPT LPKMGSVGDW EVTAESQEAL GPGKHAEKEL
   241  CKDPPGDDCG NSVCLGVPVS KPSNTSEKEQ GPEFWGLSLI NSGKRSTADY SLDNEPAQAL
   301  TWRDSRAWEE QYQWDVEDMK VSGVHWGYEE TKTFLAILSE SPFSEKLRTC HQNRQVYRAI
   361  AEQLRARGFL RTLEQCRYRV KNLLRNYRKA KSSHPPGTCP FYEELEALVR ARTAIRATDG
   421  PGEAVALPRL GYSDAEMDEQ EEGGWDPEEM AEDCNGAGLV NVESTQGPRI AGAPALFQSR
   481  IAGVHWGYEE TKAFLAILSE SPFSEKLRTC HQNSQVYRAI AERLCALGFL RTLEQCRYRF
   541  KNLLRSYRKA KSSHPPGTCP FYEELDSLMR ARAAVRAMGT VREAAGLPRC GQSSAETDAQ
   601  EAWGEVANED AVKPSTLCPK APDMGFEMRH EDEDQISEQD IFEGLPGALS KCPTEAVCQP
   661  LDWGEDSENE NEDEGQWGNP SQEQWQESSS EEDLEKLIDH QGLYLAEKPY KCDTCMKSFS
   721  RSSHFIAHQR IHTGEKPYKC LECGKNFSDR SNLNTHQRIH TGEKPYKCLE CGKSFSDHSN
   781  LITHQRIHTG EKPYKCGECW KSFNQSSNLL KHQRIHLGGN PDQCSEPGGN FAQSPSFSAH
   841  WRNSTEETAP EQPQSISKDL NSPGPHSTNS GEKLYECSEC GRSFSKSSAL ISHQRIHTGE
   901  KPYECAECGK SFSKSSTLAN HQRTHTGEKP YKCVDCGKCF SERSKLITHQ RVHTGEKPYK
   961  CLECGKFFRD RSNLITHQRI HTGEKPYKCR ECGKCFNQSS SLIIHQRIHT GEKPYKCTEC
  1021  GKDFNNSSHF SAHRRTHAGG KAS

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against ZSCAN20 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)
0.52
Highest tissue expression
2.4 nTPM

Expression across tissuesHPA

Tissue

  • duodenum: 2.4 nTPM
  • parathyroid gland: 2.4 nTPM
  • tongue: 1.9 nTPM
  • heart muscle: 1.8 nTPM
  • ovary: 1.8 nTPM
  • testis: 1.6 nTPM

Single-cell type

  • early spermatids: 26 nCPM
  • choroid plexus epithelial cells: 14 nCPM
  • cardiomyocytes: 8.9 nCPM
  • sertoli cells: 8.4 nCPM
  • gonadotrophs: 8 nCPM
  • thyrotrophs: 7.8 nCPM

Immune cell

  • naive CD8 T-cell: 0.6 nTPM
  • classical monocyte: 0.5 nTPM
  • MAIT T-cell: 0.4 nTPM
  • myeloid DC: 0.4 nTPM
  • naive CD4 T-cell: 0.4 nTPM
  • gdT-cell: 0.3 nTPM

Brain region

  • white matter: 7.6 nTPM
  • cerebellum: 7.3 nTPM
  • thalamus: 7 nTPM
  • midbrain: 6.9 nTPM
  • pons: 6.9 nTPM
  • basal ganglia: 6.6 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)
0.51
gnomAD pLI
0
gnomAD missense Z
1.34
DepMap mean gene effect
-0.19
DepMap dependency class
selective

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

Molecular functions

Cellular components

Protein domainsUniProt · Pfam · InterPro

KeywordsUniProt

InteractionsUniProt · HPA

Protein binding partners of ZSCAN20 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 ZSCAN20 as an antibody target. Whether an autoantibody or antibody against ZSCAN20 could matter depends on whether native ZSCAN20 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

ZSCAN20 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 ZSCAN20 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/ZSCAN20. 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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