Cation-stimulated adenosine triphosphatase activity and cation transport in corn roots

Cation-stimulated adenosine triphosphatase activity and cation transport in corn roots

ATPase activity of the plasma membrane fraction from primary roots of corn (Zea mays L. WF9 × M14) was activated by Mg2+ and further stimulated by monovalent cations (K+ > Rb+ > Cs+ > Na+ > Li+). K+-stimulated activity required Mg2+ and was substrate-specific. Maximum ATPase activity in...

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Veröffentlicht in:Plant physiology (Bethesda) 1976-09, Vol.58 (3), p.331-335
Hauptverfasser: Leonard, R.T, Hotchkiss, C.W
Format: Artikel
Sprache:eng
Schlagworte:
Adenosine triphosphatases
Calcium
Cell membranes
Corn
Enzymes
Kinetics
Oats
Oligomycins
Plant roots
Plants
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Zusammenfassung:ATPase activity of the plasma membrane fraction from primary roots of corn (Zea mays L. WF9 × M14) was activated by Mg2+ and further stimulated by monovalent cations (K+ > Rb+ > Cs+ > Na+ > Li+). K+-stimulated activity required Mg2+ and was substrate-specific. Maximum ATPase activity in the presence of Mg2+ and K+ was at pH 6.5 and 40 C. Calcium and lanthanum (
ISSN:0032-0889
1532-2548
DOI:10.1104/pp.58.3.331