Figure 1. Schematic modular representation of microbial α-l-fucosidases from different GH families.

Catalytic modules are shown in green and β-sandwich domains that may have carbohydrate binding properties in light brown. If a second β-sandwich domain is present, such as in GH29_0940, it is coloured yellow. AfcA has an additional helical barrel domain, colored purple. For clarity, the AfcA N-terminal domain of unknown function and the C-terminal bacterial Ig-like domain are not shown. These extend the total length of AfcA to 1959 amino acids. ALfuk2 also has a Rossman fold domain, colored teal.