Fig. 4From: Identification of bacterial laccase cueO mutation from the metagenome of chemical plant sludgeRelative laccase activity of the G276K, G276Y, and G276N mutants compared to wild-type CueO at pH 4.5 and 60 °C. The relative laccase activity in the supernatants was determined using standard enzyme assays and shown on the y-axis. Enzyme activity is expressed as the mean of three samples, and error bars indicate standard deviationBack to article page