FIG. 8.
Transcriptional activity of the pyxaAB promoter and its derivatives in the presence and absence of CcpA. β-Galactosidase activity in strains carrying a lacZ transcriptional fusion to the pyxaAB promoter and its derivatives was measured during planktonic growth in NB medium supplemented with 0.5% glucose with shaking at 37°C. Black bars, MM1709 (amyE::pyxaAB-lacZ); open bars, MM1718 (ccpA1 amyE::pyxaAB-lacZ); gray bars, MM1803 (amyE::pyxaAB-3-lacZ); bars with horizontal lines, MM1719 (ccpA1 amyE::pyxaAB-3-lacZ). ONP, o-nitrophenol. Error bars indicate standard deviations.