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Figure 3 Model showing a number of components essential for the osmotic motor that are regulated by 14-3-3 proteins
(i) The plasma membrane H+-ATPase, providing the driving force for secondary transport systems, (ii) the mitochondrial or chloroplast F0F1-ATP synthase (MF0F1) providing the fuel for the H+-ATPase, (iii) plasma membrane outward K+ channels, important for the shut down of the motor, (iv) the vacuolar SV channel that may affect the activity of the FV channel through Ca2+ release into the cytoplasm (although this is still a matter of debate) and (v) the FV channel that may play a role in vacuolar K+ accumulation.