FIG. 6.
Thermostability of the WT (dimeric) AguA (filled circles and solid line) and its W328E-R329T-R665N mutant (monomeric) form (open circles and broken line). The enzymes were incubated for 20 min at the given temperatures and cooled to room temperature, and the residual activities were measured at 55°C for the WT enzyme and 35°C for the mutant enzyme. The residual activity is shown as a percentage of the maximal activity of each form of the enzyme.