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Plant cell pH-static circuit mediated by fusicoccin-binding proteins
A V Drabkin1, M S Trofimova, I N Smolenskaya
1Institute of Agricultural Biotechnology, Russian Academy of Agricultural Sciences, Moscow.
FEBS Letters
|March 24, 1997
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.