A new subunit, YabF, for the KefC K+ efflux system in Escherichia call has been identified. The subunit is required for maximum activity of KefC. Deletion of yabF reduces KefC activity 10-fold, and supply of YabF in trans restores activity. IS2 and IS10R insertions in yabF can be isolated as suppressors of KefC activity consequent upon the V427A and D264A KefC mutations.
|Number of pages||5|
|Journal||Journal of Bacteriology|
|Publication status||Published - 2000|
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