Seroatlas · Human Serome Atlas

INSC

Protein inscuteable homolog

Also known as: INSC_HUMAN

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

Protein identityUniProt · HPA

UniProt accession
Q1MX18
Gene
INSC
Ensembl
ENSG00000188487
Chromosome
11
Canonical length
579 aa
Protein class
Predicted intracellular proteins

OverviewNCBI Gene

In Drosophila, neuroblasts divide asymmetrically into another neuroblast at the apical side and a smaller ganglion mother cell on the basal side. Cell polarization is precisely regulated by 2 apically localized multiprotein signaling complexes that are tethered by Inscuteable, which regulates their apical localization (Izaki et al., 2006 [PubMed 16458856]).[supplied by OMIM, Mar 2008]

Canonical amino-acid sequenceUniProt

579 residues, UniProt reviewed canonical sequence.

>Q1MX18|INSC
     1  MRRPPGNGEA ASEGPGGWGL WGVQESRRLC CAGHDRCKQA LLQIGINMMA LPGGRHLDSV
    61  TLPGQRLHLM QVDSVQRWME DLKLMTECEC MCVLQAKPIS LEEDAQGDLI LAGGPGPGDP
   121  LQLLLKRGWV ISTELRRIGQ KLAQDRWARV HSMSVRLTCH ARSMVSEYSA VSRNSLKEMG
   181  EIEKLLMEKC SELSAVTERC LQVENEHVLK SMKACVSETL SMLGQHFGQL LELALTREVQ
   241  ALVRKIDASD NIYTTESTTG NLFSLTQEGA PLCRIIAKEG GVVALFKVCR QDSFRCLYPQ
   301  ALRTLASICC VEEGVHQLEK VDGVLCLADI LTDNSHSEAT RAEAAAVVAQ VTSPHLPVTQ
   361  HLSSFLESME EIVTALVKLC QEASSGEVFL LASAALANIT FFDTMACEML LQLNAIRVLL
   421  EACSDKQRVD TPYTRDQIVT ILANMSVLEQ CASDIIQENG VQLIMGMLSE KPRSGTPAEV
   481  AACERVQQKA AVTLARLSRD PDVAREAVRL SCMSRLIELC RSPSERNSSD AVLVACLAAL
   541  RRLAGVCPEG LQDSDFQQLV QPRLVDSFLL CSNMEESFV

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against INSC 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)
0.34
Highest tissue expression
24 nTPM

Expression across tissuesHPA

Tissue

  • parathyroid gland: 24 nTPM
  • colon: 4.6 nTPM
  • small intestine: 2.8 nTPM
  • stomach: 2.3 nTPM
  • duodenum: 2 nTPM
  • rectum: 1.7 nTPM

Single-cell type

  • schwann cells: 117 nCPM
  • prostatic club cells: 30 nCPM
  • foveolar cells: 19 nCPM
  • oocytes: 14 nCPM
  • thyrotrophs: 14 nCPM
  • oligodendrocyte progenitor cells: 12 nCPM

Immune cell

  • NK-cell: 0.4 nTPM
  • neutrophil: 0.3 nTPM
  • basophil: 0.2 nTPM
  • classical monocyte: 0 nTPM
  • eosinophil: 0 nTPM
  • gdT-cell: 0 nTPM

Brain region

  • medulla oblongata: 1 nTPM
  • hypothalamus: 0.8 nTPM
  • pons: 0.8 nTPM
  • basal ganglia: 0.7 nTPM
  • cerebral cortex: 0.7 nTPM
  • midbrain: 0.7 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)
1.32
gnomAD pLI
0
gnomAD missense Z
-0.19
DepMap mean gene effect
-0.12
DepMap dependency class
selective

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 3% 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

  • Armadillo
  • Armadillo-like helical
  • Armadillo-type fold
  • Protein inscuteable homologue, LGN-binding domain
  • Protein inscuteable homologue, LGN-binding domain superfamily
  • Inscuteable
  • Protein inscuteable homologue, C-terminal domain
  • Inscuteable LGN-binding domain
  • Protein inscuteable C-terminal

KeywordsUniProt

InteractionsUniProt · HPA

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

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

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