Seroatlas · Human Serome Atlas

PCDHGB5

Protocadherin gamma-B5

Also known as: PCDGH_HUMAN, PCDH-GAMMA-B5

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

Protein identityUniProt · HPA

UniProt accession
Q9Y5G0
Gene
PCDHGB5
Ensembl
ENSG00000276547
Chromosome
5
Canonical length
923 aa
Protein class
Predicted membrane proteins
Subcellular location
Nucleoplasm,Vesicles,Plasma membrane,Cytosol

OverviewNCBI Gene

This gene is a member of the protocadherin gamma gene cluster, one of three related clusters tandemly linked on chromosome five. These gene clusters have an immunoglobulin-like organization, suggesting that a novel mechanism may be involved in their regulation and expression. The gamma gene cluster includes 22 genes divided into 3 subfamilies. Subfamily A contains 12 genes, subfamily B contains 7 genes and 2 pseudogenes, and the more distantly related subfamily C contains 3 genes. The tandem array of 22 large, variable region exons are followed by a constant region, containing 3 exons shared by all genes in the cluster. Each variable region exon encodes the extracellular region, which includes 6 cadherin ectodomains and a transmembrane region. The constant region exons encode the common cytoplasmic region. These neural cadherin-like cell adhesion proteins most likely play a critical role in the establishment and function of specific cell-cell connections in the brain. Alternative splicing has been described for the gamma cluster genes. [provided by RefSeq, Jul 2008]

Canonical amino-acid sequenceUniProt

923 residues, UniProt reviewed canonical sequence.

>Q9Y5G0|PCDHGB5
     1  MGSGAGELGR AERLPVLFLF LLSLFCPALC EQIRYRIPEE MPKGSVVGNL ATDLGFSVQE
    61  LPTRKLRVSS EKPYFTVSAE SGELLVSSRL DREEICGKKP ACALEFEAVA ENPLNFYHVN
   121  VEIEDINDHT PKFTQNSFEL QISESAQPGT RFILEVAEDA DIGLNSLQKY KLSLNPSFSL
   181  IIKEKQDGSK YPELALEKTL DREQQSYHRL VLTALDGGHP PLSGTTELRI QVTDANDNPP
   241  VFNRDVYRVS LRENVPPGTT VLQVSATDQD EGINSEITYS FYRTGQIFSL NSKSGEITTQ
   301  KKLDFEETKE YSMVVEGRDG GGLVAQCTVE INIQDENDNS PEVTFHSLLE MILENAVPGT
   361  LIALIKIHDQ DSGENGEVNC QLQGEVPFKI ISSSKNSYKL VTDGTLDREQ TPEYNVTITA
   421  TDRGKPPLSS SISVILHIRD VNDNAPVFHQ ASYLVSVPEN NPPGASIAQV CASDLDLGLN
   481  GQVSYSIMAS DLEPLALASY VSMSAQSGVV FAQRAFDYEQ LRTFELTLQA RDQGSPALSA
   541  NVSLRVLVGD RNDNAPRVLY PALGPDGSAL FDMVPRAAEP GYLVTKVVAV DADSGHNAWL
   601  SYHVLQASEP GLFSLGLRTG EVRTARALGD RDAARQRLLV AVRDGGQPPL SATATLHLVF
   661  ADSLQEVLPD ITDRPVPSDP QAELQFYLVV ALALISVLFL LAVILAVALR LRRSSSPAAW
   721  SCFQPGLCVK SGPVVPPNYS QGTLPYSYNL CVAHTGKTEF NFLKCSEQLS SGQDILCGDS
   781  SGALFPLCNS SESTSHPELQ APPNTDWRFS QAQRPGTSGS QNGDDTGTWP NNQFDTEMLQ
   841  AMILASASEA ADGSSTLGGG AGTMGLSARY GPQFTLQHVP DYRQNVYIPG SNATLTNAAG
   901  KRDGKAPAGG NGNKKKSGKK EKK

LocalizationUniProt · AlphaFold · HPA

Whether an antibody against PCDHGB5 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
Cell surface
Secreted
No
Transmembrane segments
1
Mean surface accessibility (rSASA)
0.42
Highest tissue expression
18 nTPM

Expression across tissuesHPA

Tissue

  • parathyroid gland: 18 nTPM
  • blood vessel: 5 nTPM
  • placenta: 4.4 nTPM
  • salivary gland: 4.2 nTPM
  • thyroid gland: 4 nTPM
  • ovary: 3.7 nTPM

Single-cell type

  • choroid plexus epithelial cells: 1.7 nCPM
  • bergmann glia: 1.1 nCPM
  • astrocytes: 1 nCPM
  • ependymal cells: 0.7 nCPM
  • oligodendrocyte progenitor cells: 0.7 nCPM
  • brain excitatory neurons: 0.5 nCPM

Immune cell

  • gdT-cell: 0.2 nTPM
  • basophil: 0 nTPM
  • classical monocyte: 0 nTPM
  • eosinophil: 0 nTPM
  • intermediate monocyte: 0 nTPM
  • MAIT T-cell: 0 nTPM

Brain region

  • hypothalamus: 19 nTPM
  • white matter: 18 nTPM
  • cerebellum: 18 nTPM
  • spinal cord: 18 nTPM
  • medulla oblongata: 17 nTPM
  • midbrain: 17 nTPM

OntologyGO

Biological processes

Molecular functions

Cellular components

Protein domainsUniProt · Pfam · InterPro

KeywordsUniProt

Antibody and autoantibody relevanceSeroatlas analysis

Seroatlas reads PCDHGB5 as an antibody target. Whether an autoantibody or antibody against PCDHGB5 could matter depends on whether native PCDHGB5 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.

PCDHGB5 is annotated at the cell surface, where native PCDHGB5 is exposed to circulating antibodies and is a prime autoantibody target that could block, deplete, or overstimulate it.

Annotation status

The present source text does not explicitly label PCDHGB5 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.

Canonical record: https://seroatlas.com/gene/PCDHGB5. 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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