The H+/ATP coupling ratio of the ATP synthase from thiol‐modulated chloroplasts and two cyanobacterial strains is four
- 5 February 1996
- journal article
- Published by Wiley in FEBS Letters
- Vol. 379 (3) , 309-313
- https://doi.org/10.1016/0014-5793(95)01536-1
Abstract
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 (ΔG p) and proton gradient ( ), 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.
Keywords
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