Figure 3
From: Crystal structure of the catalytic unit of GH 87-type α-1,3-glucanase Agl-KA from Bacillus circulans
Crystal structure of AglΔDCD-UCD (PDBID: 5ZRU). (a) Ribbon representation of the structure coloured with the amino acid sequence from the N- (blue) to C-terminals (red). Six Ca2+ ions are shown as grey spheres. (b) Structure comparison with a similar structure protein, a catalytic A-module of a mannuronan C-5-epimerase (AlgE4A) structure (PDBID: 2PYH; blue), from Dali server is shown with Agl∆DCD-UCD (red). (c) Amino acid conservation is shown with colour as indicated. The direction of the top view is shown with a black arrow. A putative substrate-binding cleft is indicated by the top view. (d) Electrostatic potential of the molecular surface of AglΔDCD-UCD obtained using the APBS tool. The negative potential is shown in red, and the positive potential is shown in blue. (e) The twelve β-helix coils. The phenylalanine (red), asparagine (blue) and isoleucine (green) ladders are shown with stick representation.
