Na+-exporting ATPase

sodium-exporting ATPase, phosphorylative mechanism
Identifiers
EC number	3.6.3.7
Databases
IntEnz	IntEnz view
BRENDA	BRENDA entry
ExPASy	NiceZyme view
KEGG	KEGG entry
MetaCyc	metabolic pathway
PRIAM	profile
PDB structures	RCSB PDB PDBe PDBsum
Gene Ontology	AmiGO / EGO
Search PMC articles PubMed articles

In enzymology, a Na+-exporting ATPase (EC 3.6.3.7) is an enzyme that catalyzes the chemical reaction

ATP + H₂O + Na⁺in $\rightleftharpoons$ ADP + phosphate + Na⁺out

The 3 substrates of this enzyme are ATP, H₂O, and Na+, whereas its 3 products are ADP, phosphate, and Na+.

This enzyme belongs to the family of hydrolases, specifically those acting on acid anhydrides to catalyse transmembrane movement of substances. The systematic name of this enzyme class is ATP phosphohydrolase (Na+-exporting).

References

• Wieland J, Nitsche AM, Strayle J, Steiner H, Rudolph HK (1995). "The PMR2 gene cluster encodes functionally distinct isoforms of a putative Na+ pump in the yeast plasma membrane". EMBO J. 14 (16): 3870–82. PMC 394466. PMID 7664728. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=394466. 
• Catty P, de Kerchove d'Exaerde A, Goffeau A (1997). "The complete inventory of the yeast Saccharomyces cerevisiae P-type transport ATPases". FEBS. Lett. 409 (3): 325–32. doi:10.1016/S0014-5793(97)00446-8. PMID 9224683. 
• Cheng J, Guffanti AA, Krulwich TA (1997). "A two-gene ABC-type transport system that extrudes Na+ in Bacillus subtilis is induced by ethanol or protonophore". Mol. Microbiol. 23 (6): 1107–20. doi:10.1046/j.1365-2958.1997.2951656.x. PMID 9106203. 
• Saier MH Jr (1998). "Molecular phylogeny as a basis for the classification of transport proteins from bacteria, archaea and eukarya". Adv. Microb. Physiol. 40: 81–136. doi:10.1016/S0065-2911(08)60130-7. PMID 9889977. 

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