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CA6
Available structures PDB Ortholog search: PDBe RCSB List of PDB id codes 3FE4
Identifiers
Aliases	CA6, CA-VI, GUSTIN, carbonic anhydrase 6
External IDs	OMIM: 114780; MGI: 1333786; HomoloGene: 20324; GeneCards: CA6; OMA:CA6 - orthologs
Gene location (Human) Chr. Chromosome 1 (human) Band 1p36.23 Start 8,945,867 bp End 8,975,092 bp
Gene location (Mouse) Chr. Chromosome 4 (mouse) Band 4|4 E2 Start 150,271,472 bp End 150,285,789 bp
RNA expression pattern Bgee Human Mouse (ortholog) Top expressed in parotid gland skin of arm skin of thigh skin of hip skin of abdomen gonad vulva tail of epididymis hair follicle tongue Top expressed in submandibular gland parotid gland lacrimal gland lip skin of external ear temporal muscle respiratory epithelium olfactory epithelium masseter muscle iris More reference expression data BioGPS More reference expression data
Gene ontology Molecular function carbonate dehydratase activity zinc ion binding metal ion binding lyase activity protein binding carbonic anhydrase Cellular component cytoplasm extracellular region cytosol extracellular exosome extracellular space Biological process bicarbonate transport detection of chemical stimulus involved in sensory perception of bitter taste one-carbon metabolic process Sources:Amigo / QuickGO
Orthologs Species Human Mouse Entrez 765 12353 Ensembl ENSG00000131686 ENSMUSG00000028972 UniProt P23280 Q8N4G4 P18761 RefSeq (mRNA) NM_001215 NM_001270500 NM_001270501 NM_001270502 NM_009802 RefSeq (protein) NP_001206 NP_001257429 NP_001257430 NP_001257431 NP_033932 Location (UCSC) Chr 1: 8.95 – 8.98 Mb Chr 4: 150.27 – 150.29 Mb PubMed search
Wikidata
View/Edit Human View/Edit Mouse

Carbonic anhydrase 6 is an enzyme that in humans is encoded by the CA6 gene. It is also called 'gustin' because of its presence in saliva, and lower-than-normal levels of salivary zinc in individuals with hypogeusia.

Function

The protein encoded by this gene is one of several isozymes of carbonic anhydrase. This protein is abundantly found in salivary glands and saliva and protein may play a role in the reversible hydratation of carbon dioxide, though its function in saliva is unknown.

It has been suggested that CA VI participates in the maintenance of appropriate pH homeostasis on tooth surfaces as well as in the mucosa of the gastrointestinal canal.

References

1. ^ GRCh38: Ensembl release 89: ENSG00000131686 – Ensembl, May 2017
2. ^ GRCm38: Ensembl release 89: ENSMUSG00000028972 – 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. White PS, Jensen SJ, Rajalingam V, Stairs D, Sulman EP, Maris JM, Biegel JA, Wooster R, Brodeur GM (Oct 1998). "Physical mapping of the CA6, ENO1, and SLC2A5 (GLUT5) genes and reassignment of SLC2A5 to 1p36.2". Cytogenetics and Cell Genetics. 81 (1): 60–4. doi:10.1159/000014989. PMID 9691177. S2CID 46770845.
6. ^ "Entrez Gene: CA6 carbonic anhydrase VI".
7. Henkin RI, Mueller CW, Wolf RO (July 1975). "Estimation of zinc concentration of parotid saliva by flameless atomic absorption spectrophotometry in normal subjects and in patients with idiopathic hypogeusia". The Journal of Laboratory and Clinical Medicine. 86 (1): 175–80. PMID 1151138.
8. Henkin RI, Lippoldt RE, Bilstad J, Edelhoch H (February 1975). "A zinc protein isolated from human parotid saliva". Proceedings of the National Academy of Sciences of the United States of America. 72 (2): 488–92. Bibcode:1975PNAS...72..488H. doi:10.1073/pnas.72.2.488. PMC 432337. PMID 1054831.

Further reading

• Nishimori I, FujikawaAdachi K, Onishi S, Hollingsworth MA (June 1999). "Carbonic anhydrase in human pancreas: hypotheses for the pathophysiological roles of CA isozymes". Annals of the New York Academy of Sciences. 880 (1): 5–16. Bibcode:1999NYASA.880....5N. doi:10.1111/j.1749-6632.1999.tb09505.x. PMID 10415846. S2CID 42868610.
• Kivela J, Parkkila S, Parkkila AK, Leinonen J, Rajaniemi H (October 1999). "Salivary carbonic anhydrase isoenzyme VI". The Journal of Physiology. 520 Pt 2 (2): 315–20. doi:10.1111/j.1469-7793.1999.t01-1-00315.x. PMC 2269599. PMID 10523402.
• Nishimori I, Onishi S (2001). "Carbonic anhydrase isozymes in the human pancreas". Digestive and Liver Disease. 33 (1): 68–74. doi:10.1016/s1590-8658(01)80138-9. PMID 11303978.
• Aldred P, Fu P, Barrett G, Penschow JD, Wright RD, Coghlan JP, Fernley RT (January 1991). "Human secreted carbonic anhydrase: cDNA cloning, nucleotide sequence, and hybridization histochemistry". Biochemistry. 30 (2): 569–75. doi:10.1021/bi00216a035. PMID 1899030.
• Parkkila S, Kaunisto K, Rajaniemi L, Kumpulainen T, Jokinen K, Rajaniemi H (July 1990). "Immunohistochemical localization of carbonic anhydrase isoenzymes VI, II, and I in human parotid and submandibular glands". The Journal of Histochemistry and Cytochemistry. 38 (7): 941–7. doi:10.1177/38.7.2113069. PMID 2113069.
• Murakami H, Sly WS (January 1987). "Purification and characterization of human salivary carbonic anhydrase". The Journal of Biological Chemistry. 262 (3): 1382–8. doi:10.1016/S0021-9258(19)75797-4. PMID 2433278.
• Sutherland GR, Baker E, Fernandez KE, Callen DF, Aldred P, Coghlan JP, Wright RD, Fernley RT (1989). "The gene for human carbonic anhydrase VI(CA6) is on the tip of the short arm of chromosome 1". Cytogenetics and Cell Genetics. 50 (2–3): 149–50. doi:10.1159/000132746. PMID 2505973.
• Ogawa Y, Hong SS, Toyosawa S, Kuwahara H, Shimazaki M, Yagi T (March 1993). "Immunoelectron microscopy of carbonic anhydrase isozyme VI in human submandibular gland: comparison with isozymes I and II". The Journal of Histochemistry and Cytochemistry. 41 (3): 343–51. doi:10.1177/41.3.8429198. PMID 8429198.
• Kivelä J, Parkkila S, Waheed A, Parkkila AK, Sly WS, Rajaniemi H (December 1997). "Secretory carbonic anhydrase isoenzyme (CA VI) in human serum". Clinical Chemistry. 43 (12): 2318–22. doi:10.1093/clinchem/43.12.2318. PMID 9439449.
• Thatcher BJ, Doherty AE, Orvisky E, Martin BM, Henkin RI (September 1998). "Gustin from human parotid saliva is carbonic anhydrase VI". Biochemical and Biophysical Research Communications. 250 (3): 635–41. doi:10.1006/bbrc.1998.9356. PMID 9784398.
• Leinonen J, Kivelä J, Parkkila S, Parkkila AK, Rajaniemi H (1999). "Salivary carbonic anhydrase isoenzyme VI is located in the human enamel pellicle". Caries Research. 33 (3): 185–90. doi:10.1159/000016515. PMID 10207193. S2CID 44344754.
• Redman RS, Peagler FD, Johansson I (March 2000). "Immunohistochemical localization of carbonic anhydrases I, II, and VI in the developing rat sublingual and submandibular glands". The Anatomical Record. 258 (3): 269–76. doi:10.1002/(SICI)1097-0185(20000301)258:3<269::AID-AR6>3.0.CO;2-Y. PMID 10705347.
• Leinonen J, Parkkila S, Kaunisto K, Koivunen P, Rajaniemi H (May 2001). "Secretion of carbonic anhydrase isoenzyme VI (CA VI) from human and rat lingual serous von Ebner's glands". The Journal of Histochemistry and Cytochemistry. 49 (5): 657–62. doi:10.1177/002215540104900513. PMID 11304804.
• Karhumaa P, Leinonen J, Parkkila S, Kaunisto K, Tapanainen J, Rajaniemi H (September 2001). "The identification of secreted carbonic anhydrase VI as a constitutive glycoprotein of human and rat milk". Proceedings of the National Academy of Sciences of the United States of America. 98 (20): 11604–8. Bibcode:2001PNAS...9811604K. doi:10.1073/pnas.121172598. PMC 58776. PMID 11553764.

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