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Localised chemiosmosis and active transport of lactose in Escherichia coli
Author(s) -
Ahmed Sohail
Publication year - 1984
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(84)80867-4
Subject(s) - escherichia coli , lactose , chemistry , biophysics , biochemistry , phosphorylation , biology , gene
The phosphorylation potential (δ G p ) in mitochondria has been found to be relatively insensitive to changes in the protonmotive force (δ p ). Similar observations have been made for lactose transport in Escherichia coli . Localised chemiosmosis has been invoked to explain these data. Here a postulate of localised chemiosmosis was put to experimental test and found to be incorrect. Alternative explanations for the δ p dependence of lactose transport are presented.