Analyzing the effect of ion binding to the membrane-surface on regulating the light-induced transthylakoid electric potential (ΔΨ_m).

ABSTRACT: The transthylakoid membrane potential (ΔΨ_m) is essential because it can drive the ATP synthesis through the CF₀-CF₁ type of ATP-synthase in chloroplasts as an energetic equivalent similar to ΔpH. In addition, a high fraction of proton motive force (PMF) stored as the ΔΨ_m component is physiologically important in the acclimation of photosynthesis to environmental stresses. It has been shown that ΔΨ_m is the sum of the Donnan potential difference (ΔΨ_dn) and the diffusion potential difference (ΔΨ_d). Specifically, ΔΨ_dn, ΔΨ_d, and ΔΨ_m are strongly associated with the ionic activities near the membrane surface, particularly, the extent of ion binding to the charged/neutral sites adjacent t

SUBMITTER: Lyu H 

PROVIDER: S-EPMC9366520 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature