ATP7A

ATP7A
Available structures
PDBOrtholog search: PDBe RCSB
Identifiers
AliasesATP7A, DSMAX, MK, MNK, SMAX3, ATPase copper transporting alpha
External IDsOMIM: 300011; MGI: 99400; HomoloGene: 35; GeneCards: ATP7A; OMA:ATP7A - orthologs
Orthologs
SpeciesHumanMouse
Entrez

538

11977

Ensembl

ENSG00000165240

ENSMUSG00000033792

UniProt

Q04656

Q64430

RefSeq (mRNA)

NM_000052
NM_001282224

NM_001109757
NM_009726

RefSeq (protein)

NP_000043
NP_001269153

NP_001103227
NP_033856

Location (UCSC)Chr X: 77.91 – 78.05 MbChr X: 105.07 – 105.17 Mb
PubMed search
Wikidata
View/Edit HumanView/Edit Mouse

ATP7A, also known as Menkes' protein (MNK), is a copper-transporting P-type ATPase which uses the energy arising from ATP hydrolysis to transport Cu(I) across cell membranes. The ATP7A protein is a transmembrane protein and is expressed in the intestine and all tissues except liver. In the intestine, ATP7A regulates Cu(I) absorption in the human body by transporting Cu(I) from the small intestine into the blood. In other tissues, ATP7A shuttles between the Golgi apparatus and the cell membrane to maintain proper Cu(I) concentrations (since there is no free Cu(I) in the cell, Cu(I) ions are all tightly bound) in the cell and provides certain enzymes with Cu(I) (e.g. peptidyl-α-monooxygenase, tyrosinase, and lysyl oxidase). The X-linked, inherited, lethal genetic disorder of the ATP7A gene causes Menkes disease, a copper deficiency resulting in early childhood death.