PCDHB2

Protocadherin beta 2
Identifiers
Symbols	PCDHB2; MGC111392; PCDH-BETA2
External IDs	OMIM: 606328 MGI: 2136735 HomoloGene: 69266 GeneCards: PCDHB2 Gene
Gene Ontology Molecular function • calcium ion binding Cellular component • plasma membrane • integral to plasma membrane • integral to membrane Biological process • cell adhesion • homophilic cell adhesion • synaptic transmission • nervous system development • synapse assembly • calcium-dependent cell-cell adhesion Sources: Amigo / QuickGO
RNA expression pattern
More reference expression data
Orthologs
Species	Human	Mouse
Entrez	56133	93873
Ensembl	ENSG00000112852	ENSMUSG00000051599
UniProt	Q9Y5E7	n/a
RefSeq (mRNA)	NM_018936	NM_053127.2
RefSeq (protein)	NP_061759	NP_444357.1
Location (UCSC)	Chr 5: 140.47 – 140.48 Mb	Chr 18: 37.45 – 37.46 Mb
PubMed search	[1]	[2]

Protocadherin beta-2 is a protein that in humans is encoded by the PCDHB2 gene.^[1][2]

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.^[2]

References

1. ^ Wu Q, Maniatis T (Jul 1999). "A striking organization of a large family of human neural cadherin-like cell adhesion genes". Cell 97 (6): 779–790. doi:10.1016/S0092-8674(00)80789-8. PMID 10380929. 
2. ^ ^{a b} "Entrez Gene: PCDHB2 protocadherin beta 2". http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=56133. 

Further reading

• Yagi T, Takeichi M (2000). "Cadherin superfamily genes: functions, genomic organization, and neurologic diversity". Genes Dev. 14 (10): 1169–80. PMID 10817752. 
• Nollet F, Kools P, van Roy F (2000). "Phylogenetic analysis of the cadherin superfamily allows identification of six major subfamilies besides several solitary members". J. Mol. Biol. 299 (3): 551–572. doi:10.1006/jmbi.2000.3777. PMID 10835267. 
• Frank M, Kemler R (2003). "Protocadherins". Curr. Opin. Cell Biol. 14 (5): 557–562. doi:10.1016/S0955-0674(02)00365-4. PMID 12231349. 
• Wu Q, Maniatis T (2000). "Large exons encoding multiple ectodomains are a characteristic feature of protocadherin genes". Proc. Natl. Acad. Sci. U.S.A. 97 (7): 3124–3129. doi:10.1073/pnas.060027397. PMC 16203. PMID 10716726. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=16203. 
• Wu Q, Zhang T, Cheng JF et al. (2001). "Comparative DNA sequence analysis of mouse and human protocadherin gene clusters". Genome Res. 11 (3): 389–404. doi:10.1101/gr.167301. PMC 311048. PMID 11230163. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=311048. 
• Vanhalst K, Kools P, Vanden Eynde E, van Roy F (2001). "The human and murine protocadherin-beta one-exon gene families show high evolutionary conservation, despite the difference in gene number". FEBS Lett. 495 (1–2): 120–125. doi:10.1016/S0014-5793(01)02372-9. PMID 11322959. 
• Strausberg RL, Feingold EA, Grouse LH et al. (2003). "Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences". Proc. Natl. Acad. Sci. U.S.A. 99 (26): 16899–16903. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=139241. 
• Ota T, Suzuki Y, Nishikawa T et al. (2004). "Complete sequencing and characterization of 21,243 full-length human cDNAs". Nat. Genet. 36 (1): 40–45. doi:10.1038/ng1285. PMID 14702039. 
• Gerhard DS, Wagner L, Feingold EA et al. (2004). "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)". Genome Res. 14 (10B): 2121–2127. doi:10.1101/gr.2596504. PMC 528928. PMID 15489334. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=528928.