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  • Title: Energetics of galactose, proline, and glutamine transport in a cytochrome-deficient mutant of Salmonella typhimurium.
    Author: Singh AP, Bragg PD.
    Journal: J Supramol Struct; 1977; 6(3):389-98. PubMed ID: 22779.
    Abstract:
    The effect of inhibitors and uncouplers on the osmotic shock-sensitive transport systems for glutamine and galactose (by the beta-methyl galactoside permease) was compared to their effect on the osmotic shock-resistant proline and galactose permease systems in cytochrome-deficient cells of Salmonella typhimurium SASY28. Both osmotic shock-sensitive and -resistant systems were sensitive to uncouplers and to inhibitors of the membrane-bound Ca2+, Mg2+-activated adenosine triphosphatase. This suggests that uptake by both types of systems is energized in these cells by an electrochemical gradient of protons formed by ATP hydrolysis through the ATPase.
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