PCDHB12
Protocadherin beta-12
Also known as: PCDBC_HUMAN, PCDH-BETA12
Cross-references: UniProt · Ensembl · Human Protein Atlas · GeneCards · NCBI Gene
Protein identityUniProt · HPA
- UniProt accession
- Q9Y5F1
- Gene
- PCDHB12
- Ensembl
- ENSG00000120328
- Chromosome
- 5
- Canonical length
- 795 aa
- Protein class
- Predicted intracellular proteins, Predicted membrane proteins
- Subcellular location
- Plasma membrane
OverviewNCBI Gene
This gene is a member of the protocadherin beta gene cluster, one of three related gene clusters tandemly linked on chromosome five. The gene clusters demonstrate an unusual genomic organization similar to that of B-cell and T-cell receptor gene clusters. The beta cluster contains 16 genes and 3 pseudogenes, each encoding 6 extracellular cadherin domains and a cytoplasmic tail that deviates from others in the cadherin superfamily. The extracellular domains interact in a homophilic manner to specify differential cell-cell connections. Unlike the alpha and gamma clusters, the transcripts from these genes are made up of only one large exon, not sharing common 3' exons as expected. These neural cadherin-like cell adhesion proteins are integral plasma membrane proteins. Their specific functions are unknown but they most likely play a critical role in the establishment and function of specific cell-cell neural connections. [provided by RefSeq, Jul 2008]
Canonical amino-acid sequenceUniProt
795 residues, UniProt reviewed canonical sequence.
>Q9Y5F1|PCDHB12
1 MENGGAGTLQ IRQVLLFFVL LGMSQAGSET GNFLVMEELQ SGSFVGNLAK TLGLEVSELS
61 SRGARVVSND NKECLQLDTN TGDLLLREML DREELCGSNE PCVLYFQVLM KNPTQFLQIE
121 LQVRDINDHS PVFLEKEMLL EIPENSPVGA VFLLESAKDL DVGINAVKSY TINPNSHFHV
181 KIRVNPDNRK YPELVLDKAL DYEERPELSF ILTALDGGSP PRSGTALVRV VVVDINDNSP
241 EFEQAFYEVK ILENSILGSL VVTVSAWDLD SGTNSELSYT FSHASEDIRK TFEINQKSGD
301 ITLTAPLDFE AIESYSIIIQ ATDGGGLFGK STVRIQVMDV NDNAPEITVS SITSPIPENT
361 PETVVMVFRI RDRDSGDNGK MVCSIPEDIP FVLKSSVNNY YTLETERPLD RESRAEYNIT
421 ITVTDLGTPR LKTEHNITVL VSDVNDNAPA FTQTSYALFV RENNSPALHI GSISATDRDS
481 GTNAQVNYSL LPSQDPHLPL ASLVSINADN GHLFALRSLD YEALQGFQFR VGATDHGSPA
541 LSSEALVRVL VLDANDNSPF VLYPLQNGSA PCTELVPWAA EPGYLVTKVV AVDGDSGQNA
601 WLSYQLLKAT EPGLFGVWAH NGEVRTARLL SERDAAKHRL VVLVKDNGEP PRSATATLHV
661 LLVDGFSQPY LPLPEAAPAQ AQADSLTVYL VVALASVSSL FLFSVLLFVA VRLCRRSRAA
721 PVGRCSVPEG PFPGHLVDVS GTGTLSQSYH YEVCVTGGSR SNKFKFLKPI IPNFLPQSTG
781 SEVEENPPFQ NNLGFLocalizationUniProt · AlphaFold · HPA
Whether an antibody against PCDHB12 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)
- 0.37
- Highest tissue expression
- 2.4 nTPM
Expression across tissuesHPA
Tissue
- endometrium: 2.4 nTPM
- ovary: 2 nTPM
- blood vessel: 1.9 nTPM
- cervix: 1.9 nTPM
- pituitary gland: 1.9 nTPM
- fallopian tube: 1.8 nTPM
Single-cell type
- corticotrophs: 13 nCPM
- lactotrophs: 7.6 nCPM
- thymic myoid cells: 6.8 nCPM
- hepatic stellate cells: 6.5 nCPM
- gastric progenitor cells: 5.1 nCPM
- pituitary stem cells: 4.9 nCPM
Immune cell
- basophil: 0 nTPM
- classical monocyte: 0 nTPM
- eosinophil: 0 nTPM
- gdT-cell: 0 nTPM
- intermediate monocyte: 0 nTPM
- MAIT T-cell: 0 nTPM
Brain region
- cerebral cortex: 11 nTPM
- cerebellum: 10 nTPM
- white matter: 9.8 nTPM
- hippocampal formation: 9.6 nTPM
- basal ganglia: 8.8 nTPM
- medulla oblongata: 8.8 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)
- 1.33
- gnomAD pLI
- 0
- gnomAD missense Z
- -2.51
- DepMap mean gene effect
- 0.12
- DepMap dependency class
- none
Cancer expressionTCGA
Across TCGA tumor cohorts, this protein is over-expressed in roughly 5% of surveyed tumor types (aggregate summary; per-cohort expression, alteration, and survival load in the interactive view).
OntologyGO
Biological processes
- cell adhesion
- homophilic cell adhesion via plasma membrane adhesion molecules
- nervous system development
Molecular functions
Cellular components
Protein domainsUniProt · Pfam · InterPro
KeywordsUniProt
Antibody and autoantibody relevanceSeroatlas analysis
Seroatlas reads PCDHB12 as an antibody target. Whether an autoantibody or antibody against PCDHB12 could matter depends on whether native PCDHB12 is physically reachable, whether the body needs it intact, and whether it acts in a disease-relevant tissue.
PCDHB12 is annotated at the cell surface, where native PCDHB12 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 PCDHB12 as an autoantigen. Seroatlas presents hypothesis context only and does not manufacture a known-serology claim.
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