Electrogenic K+ transport by the Kdp-ATPase of Escherichia coli.


Charge translocation by the Kdp-ATPase of Escherichia coli was measured by adsorption of proteoliposomes to a planar lipid membrane. The proteoliposomes were prepared by reconstitution of purified Kdp-ATPase into liposomes prepared from E. coli lipids. The protein was activated by a ATP concentration jump produced by photolysis of a protected derivative of… (More)


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