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Schematic representation of the PbGH5A active site bound to two XXXG oligosaccharide units, based on the structure of the PbGH5A in complex with the XXXGXXXG tetradecasaccharide. Key hydrogen bonds between the enzyme and the ligands are represented by dashed lines, and key stacking interactions are represented by curved lines, and the residues involved are in gray. Interactions with the solvent were omitted for visual clarity.
