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UNCOUPLING OF ELECTRON TRANSPORT BY ANIONIC QUINONOID REDOX INDICATOR DYES
Author(s) -
HILL R.,
CROFTS A. R.,
PRINCE R. C.,
EVANS E. HILARY,
GOOD N. E.,
WALKER D. A.
Publication year - 1976
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1976.tb01494.x
Subject(s) - halogen , chemistry , redox , electron transport chain , photochemistry , electron transfer , chloroplast , membrane , uncoupling agents , substitution (logic) , ion , inorganic chemistry , organic chemistry , biochemistry , oxidative phosphorylation , alkyl , gene , computer science , programming language
SUMMARY A considerable range of oxidation‐reduction dyes has been studied with reference to reactions with illuminated chloroplast preparations. Experimental methods included dye‐mediated H + ‐and H‐transfer across liposome membranes, comparison of increase in the uncoupling properties with increase of substituting halogen atoms and effect of halogen substitution on distribution of anion between water and octanol. In the absence of halogen substitution a relatively high concentration of a dye is needed for significant uncoupling. Introduction of the sulphonic group ‐SO 3 Na abolishes the uncoupling effect even in presence of halogen substitution.