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  • Title: ATP-driven potassium transport in right-side-out membrane vesicles via the Kdp system of Escherichia coli.
    Author: Kollmann R, Altendorf K.
    Journal: Biochim Biophys Acta; 1993 Jun 10; 1143(1):62-6. PubMed ID: 8499455.
    Abstract:
    The ATP-generating system described by Hugenholtz, J., Hong, J.-S. and Kaback, H.R. ((1981) Proc. Natl. Acad. Sci. USA 78, 3446-3449) has been used to synthesize ATP up to 1.8 mM in right-side-out membrane vesicles from Escherichia coli. This ATP level was sufficient to drive uptake of potassium ions via the Kdp-ATPase. In the kdp wild type strain about 110 nmoles K+/mg membrane protein were accumulated. This process was still partially sensitive to the well-known inhibitors of P-type ATPases, orthovanadate and bafilomycin B1.
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