Mg2+-importing ATPase
class of enzymes
In enzymology, a Mg2+-importing ATPase (EC 3.6.3.2) is an enzyme that catalyzes the chemical reaction
ATP + H2O + Mg2+out
⇌
{\displaystyle \rightleftharpoons }
ADP + phosphate + Mg2+in
The 3 substrates of this enzyme are ATP, H2O, and Mg2+, whereas its 3 products are ADP, phosphate, and Mg2+.
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 (Mg2+-importing).
The mgtA gene which encodes this enzyme is thought to be regulated by a magnesium responsive RNA element. A human enzyme was found in erythrocytes but the observation could not be confirmed.
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This entry incorporates text from “Mg2+-importing ATPase” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.