The H+/ATP coupling ratio of the ATP synthase from thiol‐modulated chloroplasts and two cyanobacterial strains is four

作者：H.S. van Walraven, Heinrich Strotmann, Oliver Schwarz, B. Rumberg · 发表于：FEBS Letters · 年份：1996 · DOI：10.1016/0014-5793(95)01536-1 · 被引用次数：124 · 研究领域：ATP Synthase and ATPases Research、Photosynthetic Processes and Mechanisms、Mitochondrial Function and Pathology

In this paper the authors emphasise that the proton translocating ATP synthase from thiol-modulated chloroplasts and two cyanobacterial strains has a coupling ratio of 4 protons per ATP synthesised or hydrolysed. This ratio is determined by several thermodynamic studies at equilibrium between phosphate potential (Delta Gp) and proton gradient (Delta(mu)H+), and is confirmed by measurement of proton flux during ATP hydrolysis. Ratios lower than 4 H+/ATP that have been published in the past have predominantly been determined with the oxidised chloroplast enzyme. Errors in these measurements will be discussed.