Seroatlas · Human Serome Atlas

BTBD9

BTB/POZ domain-containing protein 9

Also known as: BTBD9_HUMAN, dJ322I12.1, KIAA1880

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

Protein identityUniProt · HPA

UniProt accession
Q96Q07
Gene
BTBD9
Ensembl
ENSG00000183826
Chromosome
6
Canonical length
612 aa
Protein class
Disease related genes, Predicted intracellular proteins
Subcellular location
Nucleoplasm

OverviewNCBI Gene

This locus encodes a BTB/POZ domain-containing protein. This domain is known to be involved in protein-protein interactions. Polymorphisms at this locus have been reported to be associated with susceptibility to Restless Legs Syndrome and may also be associated with Tourette Syndrome. Alternatively spliced transcript variants have been described. [provided by RefSeq, Aug 2011]

Canonical amino-acid sequenceUniProt

612 residues, UniProt reviewed canonical sequence.

>Q96Q07|BTBD9
     1  MSNSHPLRPF TAVGEIDHVH ILSEHIGALL IGEEYGDVTF VVEKKRFPAH RVILAARCQY
    61  FRALLYGGMR ESQPEAEIPL QDTTAEAFTM LLKYIYTGRA TLTDEKEEVL LDFLSLAHKY
   121  GFPELEDSTS EYLCTILNIQ NVCMTFDVAS LYSLPKLTCM CCMFMDRNAQ EVLSSEGFLS
   181  LSKTALLNIV LRDSFAAPEK DIFLALLNWC KHNSKENHAE IMQAVRLPLM SLTELLNVVR
   241  PSGLLSPDAI LDAIKVRSES RDMDLNYRGM LIPEENIATM KYGAQVVKGE LKSALLDGDT
   301  QNYDLDHGFS RHPIDDDCRS GIEIKLGQPS IINHIRILLW DRDSRSYSYF IEVSMDELDW
   361  VRVIDHSQYL CRSWQKLYFP ARVCRYIRIV GTHNTVNKIF HIVAFECMFT NKTFTLEKGL
   421  IVPMENVATI ADCASVIEGV SRSRNALLNG DTKNYDWDSG YTCHQLGSGA IVVQLAQPYM
   481  IGSIRLLLWD CDDRSYSYYV EVSTNQQQWT MVADRTKVSC KSWQSVTFER QPASFIRIVG
   541  THNTANEVFH CVHFECPEQQ SSQKEENSEE SGTGDTSLAG QQLDSHALRA PSGSSLPSSP
   601  GSNSRSPNRQ HQ

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against BTBD9 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)
0.31
Highest tissue expression
13 nTPM

Expression across tissuesHPA

Tissue

  • parathyroid gland: 13 nTPM
  • cerebral cortex: 13 nTPM
  • basal ganglia: 12 nTPM
  • hippocampal formation: 9.7 nTPM
  • amygdala: 9.6 nTPM
  • lung: 8.7 nTPM

Single-cell type

  • alveolar cells type 2: 935 nCPM
  • transitional alveolar cells: 864 nCPM
  • choroid plexus epithelial cells: 791 nCPM
  • respiratory ciliated cells: 776 nCPM
  • lactotrophs: 771 nCPM
  • somatotrophs: 760 nCPM

Immune cell

  • basophil: 9.4 nTPM
  • neutrophil: 3.6 nTPM
  • T-reg: 3.6 nTPM
  • naive B-cell: 3.3 nTPM
  • non-classical monocyte: 3.2 nTPM
  • eosinophil: 2.7 nTPM

Brain region

  • cerebral cortex: 74 nTPM
  • hippocampal formation: 66 nTPM
  • amygdala: 54 nTPM
  • basal ganglia: 54 nTPM
  • choroid plexus: 49 nTPM
  • white matter: 48 nTPM

DiseaseUniProt · ClinVar · IEDB · PubMed

Four sources answering four different questions about BTBD9.

Disease | AllUniProt

Conditions BTBD9 is implicated in, by any mechanism.

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)
0.87
gnomAD pLI
0
gnomAD missense Z
1.93
DepMap mean gene effect
-0.13
DepMap dependency class
selective

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 6% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).

OntologyGO

Biological processes

Cellular components

Protein domainsUniProt · Pfam · InterPro

Antibody and autoantibody relevanceSeroatlas analysis

Seroatlas reads BTBD9 as an antibody target. Whether an autoantibody or antibody against BTBD9 could matter depends on whether native BTBD9 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

BTBD9 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 BTBD9 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/BTBD9. 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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