Cation/proton antiport systems in Escherichia coli. |
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Authors: | R N Brey J C Beck B P Rosen |
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Affiliation: | Department of Biological Chemistry University of Maryland School of Medicine Baltimore, Maryland 21201 USA |
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Abstract: | Three distinct systems which function as proton/cation antiports have been identified in by the ability of the ions to dissipate the ΔpH component of the protonmotive force in everted vesicles. System I exchanges H+ for K+, Rb+ or Na+; System II has Na+ and Li+ as substrates; and System III catalyzes proton exchange for Ca2+, Mn2+ or Sr2+. |
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