PCDHA9

PCDHA9
Identifiers
Aliases	PCDHA9, PCDH-ALPHA9, protocadherin alpha 9
External IDs	OMIM: 606315; MGI: 2681879; HomoloGene: 129614; GeneCards: PCDHA9; OMA:PCDHA9 - orthologs
Gene location (Human) Chr. Chromosome 5 (human) Band 5q31.3 Start 140,847,772 bp End 141,012,347 bp
Gene location (Mouse) Chr. Chromosome 18 (mouse) Band 18|18 B2- B3 Start 37,125,424 bp End 37,320,710 bp
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in buccal mucosa cell optic nerve sperm Brodmann area 46 postcentral gyrus lateral nuclear group of thalamus cerebellar vermis superior frontal gyrus lower lobe of lung ganglionic eminence Top expressed in striatum of neuraxis neural tube olfactory bulb cerebellum mesencephalon hypothalamus cerebellar cortex superior frontal gyrus hippocampus proper primary visual cortex More reference expression data BioGPS More reference expression data
Gene ontology Molecular function calcium ion binding Cellular component integral component of membrane plasma membrane membrane integral component of plasma membrane Biological process homophilic cell adhesion via plasma membrane adhesion molecules cell adhesion cell-cell signaling nervous system development Sources:Amigo / QuickGO
Orthologs Species Human Mouse Entrez 9752 353235 Ensembl ENSG00000204961 ENSMUSG00000103800 UniProt Q9Y5H5 Q91Y12 RefSeq (mRNA) NM_031857 NM_014005 NM_201243 RefSeq (protein) NP_054724 NP_114063 NP_957695 Location (UCSC) Chr 5: 140.85 – 141.01 Mb Chr 18: 37.13 – 37.32 Mb PubMed search
Wikidata
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Protocadherin alpha-9 is a protein that in humans is encoded by the PCDHA9 gene.

This gene is a member of the protocadherin alpha gene cluster, one of three related gene clusters tandemly linked on chromosome 5 that demonstrate an unusual genomic organization similar to that of B-cell and T-cell receptor gene clusters. The alpha gene cluster is composed of 15 cadherin superfamily genes related to the mouse CNR genes and consists of 13 highly similar and 2 more distantly related coding sequences. The tandem array of 15 N-terminal exons, or variable exons, are followed by downstream C-terminal exons, or constant exons, which are shared by all genes in the cluster. The large, uninterrupted N-terminal exons each encode six cadherin ectodomains while the C-terminal exons encode the cytoplasmic domain. These neural cadherin-like cell adhesion proteins are integral plasma membrane proteins that most likely play a critical role in the establishment and function of specific cell-cell connections in the brain. Alternative splicing has been observed and additional variants have been suggested but their full-length nature has yet to be determined.

Further reading

• Yagi T, Takeichi M (2000). "Cadherin superfamily genes: functions, genomic organization, and neurologic diversity". Genes Dev. 14 (10): 1169–80. doi:10.1101/gad.14.10.1169. PMID 10817752. S2CID 44844497.
• 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): 551–72. doi:10.1006/jmbi.2000.3777. PMID 10835267.
• Nagase T, Ishikawa K, Nakajima D, et al. (1997). "Prediction of the coding sequences of unidentified human genes. VII. The complete sequences of 100 new cDNA clones from brain which can code for large proteins in vitro". DNA Res. 4 (2): 141–50. doi:10.1093/dnares/4.2.141. PMID 9205841.
• Sugino H, Hamada S, Yasuda R, et al. (2000). "Genomic organization of the family of CNR cadherin genes in mice and humans". Genomics. 63 (1): 75–87. doi:10.1006/geno.1999.6066. PMID 10662547.
• 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): 3124–9. doi:10.1073/pnas.060027397. PMC 16203. PMID 10716726.
• 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.
• 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): 16899–903. Bibcode:2002PNAS...9916899M. doi:10.1073/pnas.242603899. PMC 139241. PMID 12477932.
• Schmutz J, Martin J, Terry A, et al. (2004). "The DNA sequence and comparative analysis of human chromosome 5" (PDF). Nature. 431 (7006): 268–74. Bibcode:2004Natur.431..268S. doi:10.1038/nature02919. PMID 15372022. S2CID 4373053.
• 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): 2121–7. doi:10.1101/gr.2596504. PMC 528928. PMID 15489334.