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 EKKLocalizationUniProt · 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
- cell adhesion
- homophilic cell adhesion via plasma membrane adhesion molecules
- nervous system development
Molecular functions
Cellular components
Protein domainsUniProt · Pfam · InterPro
- Cadherin-like
- Cadherin, N-terminal
- Cadherin-like superfamily
- Cadherin conserved site
- Cadherin, C-terminal catenin-binding domain
- Cadherin, cytoplasmic C-terminal domain
- Protocadherin/Cadherin-related Cell Adhesion
- Cadherin domain
- Cadherin-like
- Cadherin C-terminal cytoplasmic tail, catenin-binding region
- Cadherin cytoplasmic C-terminal
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.
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