CA8

Carbonic anhydrase-related protein is an protein that in humans is encoded by the CA8 gene.[5][6] The CA8 protein lacks the catalytic activity of other carbonic anhydrase enzymes.[7] A rare, autosomal recessive form of cerebellar ataxia known as "cerebellar ataxia, mental retardation, and dysequilibrium syndrome 3" (CAMRQ3) is caused by mutations in the CA8 gene.[7][8]

CA8
Available structures PDB Ortholog search: PDBe RCSB List of PDB id codes 2W2J
Identifiers
Aliases	CA8, CA-VIII, CALS, CAMRQ3, CARP, CA-RP, carbonic anhydrase 8
External IDs	OMIM: 114815 MGI: 88253 HomoloGene: 20861 GeneCards: CA8
Gene location (Human) Chr. Chromosome 8 (human)[1] Band 8q12.1 Start 60,185,412 bp[1] End 60,281,400 bp[1]
Gene location (Mouse) Chr. Chromosome 4 (mouse)[2] Band 4 A1|4 3.53 cM Start 8,143,362 bp[2] End 8,239,041 bp[2]
RNA expression pattern More reference expression data
Gene ontology Molecular function • carbonate dehydratase activity • zinc ion binding • GO:0001948 protein binding • metal ion binding • Carbonic anhydrase Cellular component • cytoplasm Biological process • phosphatidylinositol-mediated signaling Sources:Amigo / QuickGO
Orthologs
Species	Human	Mouse
Entrez	767	12319
Ensembl	ENSG00000178538	ENSMUSG00000041261
UniProt	P35219	P28651
RefSeq (mRNA)	NM_004056 NM_001321837 NM_001321838 NM_001321839	NM_007592
RefSeq (protein)	NP_001308766 NP_001308767 NP_001308768 NP_004047	NP_031618
Location (UCSC)	Chr 8: 60.19 – 60.28 Mb	Chr 4: 8.14 – 8.24 Mb
PubMed search	[3]	[4]
Wikidata
View/Edit Human View/Edit Mouse

Function

The protein encoded by this gene was initially named CA-related protein because of sequence similarity to other known carbonic anhydrase genes. However, the gene product lacks carbonic anhydrase activity (i.e., the reversible hydration of carbon dioxide). The gene product continues to carry a carbonic anhydrase designation based on clear sequence identity to other members of the carbonic anhydrase gene family. The absence of CA8 gene transcription in the cerebellum of the lurcher mutant in mice with a neurologic defect suggests an important role for this acatalytic form.[6]

Interactions

CA8 has been shown to interact with ITPR1.[9]

References

1. GRCh38: Ensembl release 89: ENSG00000178538 - Ensembl, May 2017
2. GRCm38: Ensembl release 89: ENSMUSG00000041261 - Ensembl, May 2017
3. "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
4. "Mouse PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
5. Nishikata M, Nishimori I, Taniuchi K, Takeuchi T, Minakuchi T, Kohsaki T, Adachi Y, Ohtsuki Y, Onishi S (Feb 2007). "Carbonic anhydrase-related protein VIII promotes colon cancer cell growth". Mol Carcinog. 46 (3): 208–14. doi:10.1002/mc.20264. PMID 17219437. S2CID 43887918.
6. "Entrez Gene: CA8 carbonic anhydrase VIII".
7. UniProt accession number: P35219; Retrieved 27 December 2019
8. Online Mendelian Inheritance in Man (OMIM): CEREBELLAR ATAXIA, MENTAL RETARDATION, AND DYSEQUILIBRIUM SYNDROME 3; CAMRQ3 - 613227; Retrieved 27 December 2019
9. Hirota J, Ando H, Hamada K, Mikoshiba K (Jun 2003). "Carbonic anhydrase-related protein is a novel binding protein for inositol 1,4,5-trisphosphate receptor type 1". Biochem. J. 372 (Pt 2): 435–41. doi:10.1042/BJ20030110. PMC 1223404. PMID 12611586.

Further reading

• Bergenhem NC, Sait SS, Eddy RL, Shows TB, Tashian RE (1995). "Assignment of the gene for human carbonic anhydrase VIII(CA8) to chromosome 8q11→q12". Cytogenet. Cell Genet. 71 (3): 299–300. doi:10.1159/000134131. PMID 7587398.
• Kelly C, Nógrádi A, Walker R, Caddy K, Peters J, Carter N (1995). "Lurching, reeling, waddling and staggering in mice--is carbonic anhydrase (CA) VIII a candidate gene?". Biochem. Soc. Trans. 22 (3): 359S. doi:10.1042/bst022359s. PMID 7821612.
• Skaggs LA, Bergenhem NC, Venta PJ, Tashian RE (1993). "The deduced amino acid sequence of human carbonic anhydrase-related protein (CARP) is 98% identical to the mouse homologue" (PDF). Gene. 126 (2): 291–2. doi:10.1016/0378-1119(93)90385-G. hdl:2027.42/30832. PMID 8482548.
• Sjöblom B, Elleby B, Wallgren K, Jonsson BH, Lindskog S (1997). "Two point mutations convert a catalytically inactive carbonic anhydrase-related protein (CARP) to an active enzyme". FEBS Lett. 398 (2–3): 322–5. doi:10.1016/S0014-5793(96)01263-X. PMID 8977131. S2CID 38015351.
• Taniuchi K, Nishimori I, Takeuchi T, Fujikawa-Adachi K, Ohtsuki Y, Onishi S (2002). "Developmental expression of carbonic anhydrase-related proteins VIII, X, and XI in the human brain". Neuroscience. 112 (1): 93–9. doi:10.1016/S0306-4522(02)00066-0. PMID 12044474. S2CID 31186391.
• Akisawa Y, Nishimori I, Taniuchi K, Okamoto N, Takeuchi T, Sonobe H, Ohtsuki Y, Onishi S (2003). "Expression of carbonic anhydrase-related protein CA-RP VIII in non-small cell lung cancer". Virchows Arch. 442 (1): 66–70. doi:10.1007/s00428-002-0721-y. PMID 12536316. S2CID 34260891.
• Hirota J, Ando H, Hamada K, Mikoshiba K (2003). "Carbonic anhydrase-related protein is a novel binding protein for inositol 1,4,5-trisphosphate receptor type 1". Biochem. J. 372 (Pt 2): 435–41. doi:10.1042/BJ20030110. PMC 1223404. PMID 12611586.

External links

• Human CA8 genome location and CA8 gene details page in the UCSC Genome Browser.
• PDBe-KB provides an overview of all the structure information available in the PDB for Human Carbonic anhydrase-related protein