Proton Motive Force generation in photosynthetic bacteria

• The proton motive force (PMF) is the electrochemical gradient of protons (H⁺) generated across a membrane during photosynthesis. It is the immediate energy source for ATP synthesis via Chemiosmosis was proposed by Peter Mitchell.

PMF has two components:

• ΔpH (proton gradient)
• Δψ (membrane potential)

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