Seroatlas · Human Serome Atlas

GTSE1

G2 and S phase-expressed protein 1

Also known as: B99, GTSE-1, GTSE1_HUMAN, Lnc_bc060912

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

Protein identityUniProt · HPA

UniProt accession
Q9NYZ3
Gene
GTSE1
Ensembl
ENSG00000075218
Chromosome
22
Canonical length
739 aa
Protein class
Plasma proteins, Predicted intracellular proteins
Subcellular location
Plasma membrane,Centrosome

OverviewNCBI Gene

The protein encoded by this gene is only expressed in the S and G2 phases of the cell cycle, where it colocalizes with cytoplasmic tubulin and microtubules. In response to DNA damage, the encoded protein accumulates in the nucleus and binds the tumor suppressor protein p53, shuttling it out of the nucleus and repressing its ability to induce apoptosis. [provided by RefSeq, Jul 2008]

Canonical amino-acid sequenceUniProt

739 residues, UniProt reviewed canonical sequence.

>Q9NYZ3|GTSE1
     1  MEGGGGRDEP SACRAGDVNM DDPKKEDILL LADEKFDFDL SLSSSSANED DEVFFGPFGH
    61  KERCIAASLE LNNPVPEQPP LPTSESPFAW SPLAGEKFVE VYKEAHLLAL HIESSSRNQA
   121  AQAAKPEDPR SQGVERFIQE SKLKINLFEK EKEMKKSPTS LKRETYYLSD SPLLGPPVGE
   181  PRLLASSPAL PSSGAQARLT RAPGPPHSAH ALPRESCTAH AASQAATQRK PGTKLLLPRA
   241  ASVRGRSIPG AAEKPKKEIP ASPSRTKIPA EKESHRDVLP DKPAPGAVNV PAAGSHLGQG
   301  KRAIPVPNKL GLKKTLLKAP GSTSNLARKS SSGPVWSGAS SACTSPAVGK AKSSEFASIP
   361  ANSSRPLSNI SKSGRMGPAM LRPALPAGPV GASSWQAKRV DVSELAAEQL TAPPSASPTQ
   421  PQTPEGGGQW LNSSCAWSES SQLNKTRSIR RRDSCLNSKT KVMPTPTNQF KIPKFSIGDS
   481  PDSSTPKLSR AQRPQSCTSV GRVTVHSTPV RRSSGPAPQS LLSAWRVSAL PTPASRRCSG
   541  LPPMTPKTMP RAVGSPLCVP ARRRSSEPRK NSAMRTEPTR ESNRKTDSRL VDVSPDRGSP
   601  PSRVPQALNF SPEESDSTFS KSTATEVARE EAKPGGDAAP SEALLVDIKL EPLAVTPDAA
   661  SQPLIDLPLI DFCDTPEAHV AVGSESRPLI DLMTNTPDMN KNVAKPSPVV GQLIDLSSPL
   721  IQLSPEADKE NVDSPLLKF

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against GTSE1 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)
0.72
Highest tissue expression
18 nTPM

Expression across tissuesHPA

Tissue

  • thymus: 18 nTPM
  • bone marrow: 11 nTPM
  • lymph node: 8.6 nTPM
  • tonsil: 8.2 nTPM
  • testis: 7.1 nTPM
  • appendix: 4.8 nTPM

Single-cell type

  • monocyte progenitors: 158 nCPM
  • early primary spermatocytes: 72 nCPM
  • megakaryocyte progenitors: 68 nCPM
  • erythrocyte progenitors: 66 nCPM
  • neutrophil progenitors: 52 nCPM
  • differentiating spermatogonia: 49 nCPM

Immune cell

  • neutrophil: 0.5 nTPM
  • plasmacytoid DC: 0.4 nTPM
  • eosinophil: 0.3 nTPM
  • gdT-cell: 0.3 nTPM
  • memory B-cell: 0.3 nTPM
  • NK-cell: 0.3 nTPM

Brain region

  • thalamus: 2.3 nTPM
  • cerebellum: 2.2 nTPM
  • pons: 2 nTPM
  • white matter: 1.9 nTPM
  • cerebral cortex: 1.7 nTPM
  • hypothalamus: 1.7 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)
0.74
gnomAD pLI
0
gnomAD missense Z
0.06
DepMap mean gene effect
-0.25
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 GTSE1 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 GTSE1 as an antibody target. Whether an autoantibody or antibody against GTSE1 could matter depends on whether native GTSE1 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

GTSE1 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 GTSE1 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/GTSE1. 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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