SIGMA(54)-DEPENDENT TRANSCRIPTION OF THE PSEUDOMONAS-PUTIDA XYLS OPERON IS INFLUENCED BY THE IIA(NTR) PROTEIN OF THE PHOSPHOTRANSFERASE SYSTEM IN ESCHERICHIA-COLI
Y. Du et al., SIGMA(54)-DEPENDENT TRANSCRIPTION OF THE PSEUDOMONAS-PUTIDA XYLS OPERON IS INFLUENCED BY THE IIA(NTR) PROTEIN OF THE PHOSPHOTRANSFERASE SYSTEM IN ESCHERICHIA-COLI, Research in microbiology, 147(3), 1996, pp. 129-132
IIA(Ntr) encoded within the rpoN operons of many Gram-negative bacteri
a, is a homologue of a class of phosphoryl transfer proteins of the ph
osphoenolpyruvate: sugar phosphotransferase system. We have used a xyl
S operon-lacZ fusion from the TOL plasmid of Pseudomonas putida to sho
w that IIA(Ntr) influences sigma(54)-dependent transcription when the
xylS operon is expressed in Escherichia coli. Loss of IIA(Ntr) influen
ces, but does not abolish cyclic AMP-independent carbon catabolite rep
ression.