Fig. 2

Charge distributions on the surfaces of the GH 20 GlcNAcases. The A-chain of GlcNAcase is used. PDB IDs are presented as the names of GlcNAcases (except HJ5Nag) as follows: 1 M01, the GlcNAcase from S. plicatus [74]; 1QBA, the GlcNAcase from S. marcescens [23]; 2GJX, the GlcNAcase from H. sapiens [24]; 3GH4, the GlcNAcase from Paenibacillus sp. [25]; 3NSM, the GlcNAcase from O. furnacalis [72]; 3RCN, the GlcNAcase from A. aurescens; 4PYS, the GlcNAcase from B. fragilis. The charge distribution on the surface was calculated at pH 7.0. Positive charges are depicted in blue and negative charges in red