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 KASLocalizationUniProt · 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
- DNA-binding transcription factor activity, RNA polymerase II-specific
- RNA polymerase II cis-regulatory region sequence-specific DNA binding
- zinc ion binding
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.
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