Abstract
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.
Publication types
-
Research Support, Non-U.S. Gov't
MeSH terms
-
Biological Transport
-
Cells, Cultured
-
Glycosides / metabolism*
-
Homeostasis
-
Hydrogen-Ion Concentration*
-
Plant Proteins / metabolism*
-
Proton-Translocating ATPases / metabolism
-
Protoplasts
-
Receptors, Cell Surface / metabolism*
-
Vegetables / cytology
-
Vegetables / metabolism
Substances
-
Glycosides
-
Plant Proteins
-
Receptors, Cell Surface
-
fusicoccin receptor protein, plant
-
fusicoccin
-
Proton-Translocating ATPases