Fig. 6

Protein structure of the GE40 endoglucanase protein. The protein model has been predicted on the basis of the crystal structure of a Bacillus halodurans endoglucanase (BhCel5b; PDB:4V2X_A). 92% of the residues from GE40 were modelled at > 90% confidence. The GE40 protein contains an N-terminal GH5_4 catalytic domain, an immunoglobulin-like domain and a C-terminal CBM46. Active site residues were to be E178 and E296 (pink sticks). The tryptophan residue at position W501 (yellow stick) was predicted to be involved in ligand binding