Mathematical modeling of electron and proton transport coupled with ATP synthesis in chloroplasts

A. V. Vershubskii, V. I. Priklonskii, A. N. Tikhonov

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

This study presents a mathematical model of electron and proton transport in higher plant chloroplasts built with allowance for lateral heterogeneity of their lamellar system. Numerical experiments were performed to examine how the lateral pH profiles in the inner thylakoid space and narrow gaps between adjacent granal thylakoids vary with the proton diffusion coefficient, pH in the stroma, and the metabolic conditions (photosynthetic control or photophosphorylation) in class B chloroplasts. The results of simulations suggest that regulation of electron and proton transport in chloroplasts in great measure relies on pH changes not only in the thylakoid lumen, but also in the gaps between adjacent granal thylakoids that may undergo alkalization because of the low rates of proton diffusion from the stroma to the photosystem II complexes localized in granal thylakoids.

Original languageEnglish
Pages (from-to)52-65
Number of pages14
JournalBiophysics
Volume49
Issue number1
Publication statusPublished - Dec 1 2004
Externally publishedYes

Keywords

  • Chloroplast
  • Electron and proton transport
  • Lateral heterogeneity
  • Thylakoids

ASJC Scopus subject areas

  • Biophysics

Fingerprint Dive into the research topics of 'Mathematical modeling of electron and proton transport coupled with ATP synthesis in chloroplasts'. Together they form a unique fingerprint.

Cite this