Seroatlas · Human Serome Atlas

BLCAP

Apoptosis inducing factor BLCAP

Also known as: BC10, BLCAP_HUMAN

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

Protein identityUniProt · HPA

UniProt accession
P62952
Gene
BLCAP
Ensembl
ENSG00000166619
Chromosome
20
Canonical length
87 aa
Protein class
Predicted intracellular proteins
Subcellular location
Nucleoli

OverviewNCBI Gene

This gene encodes a protein that reduces cell growth by stimulating apoptosis. Alternative splicing and the use of alternative promoters result in multiple transcript variants encoding the same protein. This gene is imprinted in brain where different transcript variants are expressed from each parental allele. Transcript variants initiating from the upstream promoter are expressed preferentially from the maternal allele, while transcript variants initiating downstream of the interspersed NNAT gene (GeneID:4826) are expressed from the paternal allele. Transcripts at this locus may also undergo A to I editing, resulting in amino acid changes at three positions in the N-terminus of the protein. [provided by RefSeq, Nov 2015]

Canonical amino-acid sequenceUniProt

87 residues, UniProt reviewed canonical sequence.

>P62952|BLCAP
     1  MYCLQWLLPV LLIPKPLNPA LWFSHSMFMG FYLLSFLLER KPCTICALVF LAALFLICYS
    61  CWGNCFLYHC SDSPLPESAH DPGVVGT

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against BLCAP 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
2
Mean surface accessibility (rSASA)
0.52
Highest tissue expression
452 nTPM

Expression across tissuesHPA

Tissue

  • skeletal muscle: 452 nTPM
  • basal ganglia: 311 nTPM
  • hypothalamus: 183 nTPM
  • pituitary gland: 145 nTPM
  • cerebral cortex: 140 nTPM
  • choroid plexus: 139 nTPM

Single-cell type

  • late spermatids: 311 nCPM
  • adipocytes: 309 nCPM
  • fallopian tube ciliated cells: 242 nCPM
  • thymic myoid cells: 228 nCPM
  • basal keratinocytes: 218 nCPM
  • urothelial cells: 209 nCPM

Immune cell

  • naive B-cell: 114 nTPM
  • memory B-cell: 94 nTPM
  • basophil: 75 nTPM
  • eosinophil: 70 nTPM
  • naive CD4 T-cell: 67 nTPM
  • neutrophil: 59 nTPM

Brain region

  • hypothalamus: 297 nTPM
  • basal ganglia: 280 nTPM
  • amygdala: 220 nTPM
  • choroid plexus: 220 nTPM
  • pons: 192 nTPM
  • cerebral cortex: 190 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)
1.34
gnomAD pLI
0.51
gnomAD missense Z
1.03
DepMap mean gene effect
0.08
DepMap dependency class
none

Cancer expressionTCGA

Across TCGA tumor cohorts, this protein is over-expressed in roughly 10% 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

  • Apoptosis inducing factor BLCAP
  • Bladder cancer-related protein BC10

KeywordsUniProt

InteractionsUniProt · HPA

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

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

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