ATPase copper transporting alpha
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A ATP7A gene provides instructions for making a protein that is important for regulating copper levels in the body. Copper is necessary for many cellular functions, but it is toxic when present in excessive amounts. The ATP7A protein is found throughout the body, except in liver cells. In the small intestine, this protein helps control the absorption of copper from food. In other cells, the ATP7A protein has a dual role and shuttles between two cellular locations. The protein normally resides in a cell structure called the Golgi apparatus, which modifies newly produced proteins, including enzymes. In the Golgi apparatus, the ATP7A protein supplies copper to certain enzymes that are critical for the structure and function of bone, skin, hair, blood vessels, and the nervous system. If copper levels in the cell environment are elevated, however, the ATP7A protein moves to the cell membrane and eliminates excess copper from the cell.
Normal function
A ATP7A gene provides instructions for making a protein that is important for regulating copper levels in the body. Copper is necessary for many cellular functions, but it is toxic when present in excessive amounts. The ATP7A protein is found throughout the body, except in liver cells. In the small intestine, this protein helps control the absorption of copper from food. In other cells, the ATP7A protein has a dual role and shuttles between two cellular locations. The protein normally resides in a cell structure called the Golgi apparatus, which modifies newly produced proteins, including enzymes. In the Golgi apparatus, the ATP7A protein supplies copper to certain enzymes that are critical for the structure and function of bone, skin, hair, blood vessels, and the nervous system. If copper levels in the cell environment are elevated, however, the ATP7A protein moves to the cell membrane and eliminates excess copper from the cell.
Conditions referring to this gene or chromosome
Other names
ATP7A_HUMAN
ATPase, Cu++ transporting, alpha polypeptide
ATPase, Cu++ transporting, alpha polypeptide (Menkes syndrome)
ATPP1
copper pump 1
MC1
MK
MNK
OHS
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Leitura adicional e referências
- ATPase copper transporting alpha; MedlinePlus, National Library of Medicine.
- Barnes N, Tsivkovskii R, Tsivkovskaia N, Lutsenko S. The copper-transporting ATPases, menkes and wilson disease proteins, have distinct roles in adult and developing cerebellum. J Biol Chem. 2005 Mar 11;280(10):9640-5. doi: 10.1074/jbc.M413840200. Epub 2005 Jan 5.
- Bertini I, Rosato A. Menkes disease. Cell Mol Life Sci. 2008 Jan;65(1):89-91. doi: 10.1007/s00018-007-7439-6.
- de Bie P, Muller P, Wijmenga C, Klomp LW. Molecular pathogenesis of Wilson and Menkes disease: correlation of mutations with molecular defects and disease phenotypes. J Med Genet. 2007 Nov;44(11):673-88. doi: 10.1136/jmg.2007.052746. Epub 2007 Aug 23.
- Donsante A, Tang J, Godwin SC, Holmes CS, Goldstein DS, Bassuk A, Kaler SG. Differences in ATP7A gene expression underlie intrafamilial variability in Menkes disease/occipital horn syndrome. J Med Genet. 2007 Aug;44(8):492-7. doi: 10.1136/jmg.2007.050013. Epub 2007 May 11.
- Greenough M, Pase L, Voskoboinik I, Petris MJ, O'Brien AW, Camakaris J. Signals regulating trafficking of Menkes (MNK; ATP7A) copper-translocating P-type ATPase in polarized MDCK cells. Am J Physiol Cell Physiol. 2004 Nov;287(5):C1463-71. doi: 10.1152/ajpcell.00179.2004. Epub 2004 Jul 21.
- Harris ED. Basic and clinical aspects of copper. Crit Rev Clin Lab Sci. 2003 Oct;40(5):547-86.
- Kaler SG. Metabolic and molecular bases of Menkes disease and occipital horn syndrome. Pediatr Dev Pathol. 1998 Jan-Feb;1(1):85-98. doi: 10.1007/s100249900011.
- Moller LB, Tumer Z, Lund C, Petersen C, Cole T, Hanusch R, Seidel J, Jensen LR, Horn N. Similar splice-site mutations of the ATP7A gene lead to different phenotypes: classical Menkes disease or occipital horn syndrome. Am J Hum Genet. 2000 Apr;66(4):1211-20. doi: 10.1086/302857. Epub 2000 Mar 17.
- Prohaska JR. Role of copper transporters in copper homeostasis. Am J Clin Nutr. 2008 Sep;88(3):826S-9S. doi: 10.1093/ajcn/88.3.826S.
- Tang J, Robertson S, Lem KE, Godwin SC, Kaler SG. Functional copper transport explains neurologic sparing in occipital horn syndrome. Genet Med. 2006 Nov;8(11):711-8. doi: 10.1097/01.gim.0000245578.94312.1e.
- Voskoboinik I, Camakaris J. Menkes copper-translocating P-type ATPase (ATP7A): biochemical and cell biology properties, and role in Menkes disease. J Bioenerg Biomembr. 2002 Oct;34(5):363-71. doi: 10.1023/a:1021250003104.
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