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Literature summary for 7.1.2.1 extracted from

  • Wakeel, A.; Suemer, A.; Hanstein, S.; Yan, F.; Schubert, S.
    In vitro effect of different Na+/K+ ratios on plasma membrane H+-ATPase activity in maize and sugar beet shoot (2011), Plant Physiol. Biochem., 49, 341-345.
    View publication on PubMed
Search for more literature for 7.1.2.1

Activating Compound

Activating Compound Comment Organism Structure
Mg-ATP activation of H+-ATPase occurs by the addition of 5 mM Mg-ATP Beta vulgaris
Mg-ATP activation of H+-ATPase occurs by the addition of 5 mM Mg-ATP Zea mays

Inhibitors

Inhibitors Comment Organism Structure
molybdate 86% residual activity at 1 mM Beta vulgaris
molybdate 87% residual activity at 1 mM Zea mays
additional information not inhibited by azide and nitrate Beta vulgaris
additional information not inhibited by azide and nitrate Zea mays
vanadate 8% residual activity at 0.1 mM Beta vulgaris
vanadate 8% residual activity at 0.1 mM Zea mays

Localization

Localization Comment Organism GeneOntology No. Textmining
plasma membrane
-
 Beta vulgaris 5886
-
plasma membrane
-
 Zea mays 5886
-

Metals/Ions

Metals/Ions Comment Organism Structure
K+ K+ stimulates enzyme Beta vulgaris
K+ K+ stimulates enzyme Zea mays

Organism

Organism UniProt Comment Textmining
Beta vulgaris
-
-
-
Zea mays
-
-
-

Source Tissue

Source Tissue Comment Organism Textmining
shoot
-
 Beta vulgaris
-
shoot
-
 Zea mays
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
ATP + H2O + H+/in
-
 Beta vulgaris ADP + phosphate + H+/out
-
 ?
ATP + H2O + H+/in
-
 Zea mays ADP + phosphate + H+/out
-
 ?

Synonyms

Synonyms Comment Organism
plasma membrane H+-ATPase
-
 Beta vulgaris
plasma membrane H+-ATPase
-
 Zea mays
PM H+-ATPase
-
 Beta vulgaris
PM H+-ATPase
-
 Zea mays

Expression

Organism Comment Expression
Zea mays an increased Na+/K+ ratio decreases the enzyme activity. A significant decrease in hydrolytic activity is observed at 25 mM Na+ concentration at pH 7.0 (reduction in active H+ flux is 20%). The active H+ flux is decreased to 80% when 100 mM K+ are substituted by 100 mM Na+ down
Beta vulgaris the active H+ flux is decreased to 60% when 100 mM K+ are substituted by 100 mM Na+ down
Beta vulgaris at 25 mM Na+ concentration, hydrolytic activity is not affected (reduction in active H+ flux is 5%) additional information