Figure 6

Schematic model and bond cleavage preference of EngU. The EngU model shows the presumed modular composition of the enzyme with a TIM barrel assembled from the two half-barrels GH-A1 and GH-A2. In the β-glucan structure section shown, the main glycosidic bond cleavage preference of EngU is indicated as a blue line, while the typical bond cleavage preference of other lichenases is shown in green.