Fig. 5
From: Synergistic mechanism of GH11 xylanases with different action modes from Aspergillus niger An76
Schematic illustration of interactions between residues in the active site of XynA (a), XynB (b), XynD (c) and the xylohexaoses. Blue amino acids represent common interactions among the three xylanases. Red amino acids represent unique interaction residues of XynA. Purple amino acids represent the unique interaction residues of XynB and XynD. Dashed lines represent polar interactions, and arcs represent CH–π interactions