Figure 2

β-galactosidase activity level of Pshp144-lacZ-∆shp144 reporter strain in the presence of late exponential phase culture supernates from wild type (WT), ∆rgg144, ∆rgg/shp939, ∆shp144 and vehicle (uninoculated CDM) supplemented with 55 mM of glucose. The activity is expressed in Miller Units (nmol p-nitrophenol/min/ml). Error bars indicate the SEM. Values are the average of three independent experiments, each with three replicates, ****p < 0.001.