Plant cell pH-static circuit mediated by fusicoccin-binding proteins

On sugar beet protoplasts that carry two types of fusicoccin-binding sites, a pH downshift in a physiological range (7.0–6.6) markedly enhanced the efficiency of fusicoccin (FC) binding, mainly owing to increased avidity of low-affinity FC-binding sites. This may allow the FC-binding proteins to act...

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Veröffentlicht in:	FEBS letters 1997-03, Vol.405 (2), p.145-147
Hauptverfasser:	Drabkin, Artem V, Trofimova, Marina S, Smolenskaya, Irina N, Klychnikov, Oleg I, Chelysheva, Vera V, Babakov, Alexey V
Format:	Artikel
Sprache:	eng
Schlagworte:	Affinity Biological Transport Cells, Cultured Cytoplasmic pH Fusicoccin Fusicoccin-binding protein Glycosides - metabolism Homeostasis Hydrogen-Ion Concentration Plant Proteins - metabolism Proton-Translocating ATPases - metabolism Protoplast Protoplasts Receptors, Cell Surface - metabolism Vegetables - cytology Vegetables - metabolism
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Zusammenfassung:	On sugar beet protoplasts that carry two types of fusicoccin-binding sites, a pH downshift in a physiological range (7.0–6.6) markedly enhanced the efficiency of fusicoccin (FC) binding, mainly owing to increased avidity of low-affinity FC-binding sites. This may allow the FC-binding proteins to act as pH-sensitive modulators of cell activity, for instance, via plasma membrane H+-ATPase or potassium channels. © 1997 Federation of European Biochemical Societies
ISSN:	0014-5793 1873-3468
DOI:	10.1016/S0014-5793(97)00172-5