BOTH ACETATE KINASE AND ACETYL-COENZYME-A SYNTHETASE ARE INVOLVED IN ACETATE-STIMULATED CHANGE IN THE DIRECTION OF FLAGELLAR ROTATION IN ESCHERICHIA-COLI

Escherichia coli strains overproducing the response regulator CheY res pond to acetate by increasing their clockwise bias of flagellar rotati on, even when they lack other chemotaxis proteins, With acetate metabo lism mutants, we demonstrate that both acetate kinase and acetyl coenz yme A synthetase are involved in this response, Thus, a response was o bserved when one of these enzymes was missing but not when both were a bsent.