A phosphothreonine residue at the C-terminal end of the plasma membrane H+-ATPase is protected by fusicoccin-induced 14-3-3 binding

From: Plant Physiology | Date: October 1, 1998| Author: | Copyright information

A Phosphothreonine Residue at the C-Terminal End of the Plasma Membrane H+-ATPase Is Protected by FusicoccinInduced 14-3-3 Binding'

Anne Olsson*, Fredrik Svennelid, Bo Ek, Marianne Sommarin, and Christer Larsson

We have isolated the plasma membrane H+-ATPase in a phosphorylated form from spinach (Spinacia oleracea L.) leaf tissue incubated with fusicoccin, a fungal toxin that induces irreversible binding of 14-3-3 protein to the C terminus of the H+-ATPase, thus activating H+ pumping. We have identified threonine-948, the second residue from the C-terminal end of the H+-ATPase, as the ...

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