Fig. 4

Structural analysis of the catalytic domain (Actglu-CD) of β-1,3-glucanase. A the overall structure. β-sheets, yellow; α-helix, red; Mg²⁺, bright pink; all loops, green. B two disulfide bonds in the structure (between C160 and C168, and between C180 and C185). The model in Panel B is rotated 90° around the Y-axis. C molecular docking shows the ligand binding cleft in Actglu-CD. The disulfide bonds are located in a region (light-pink, residues 156 –174) near the active site, which is illustrated by a red dashed oval