Proceedings of the National Academy of Sciences of the United States of America, Vol. 78, No. 6, [Part 2: Biological Sciences] (Jun., 1981), pp. 3446-3449 (4 pages) Membrane vesicles from Salmonella ...
IN general, concentration gradients across the membranes of living cells for a number of substances, including ions and essential metabolites such as sugars and amino-acids, are maintained through ...
This is a preview. Log in through your library . Abstract Cells of Escherichia coli contain two nucleoside-transport systems. Energy-starved cells of a strain containing only one of these systems and, ...
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