Fig. 1.
Comparison of different enzyme immobilization methods. (a) Random immobilization via covalent binding; (b) random adsorptive binding; (c) random physical adsorption within a 3D gel structure; (d) novel approach for site-directed immobilization of an enzyme via the S-layer self-assembly technique, allowing orientated and dense surface display of the enzyme in its native conformation and ensuring accessibility for the substrate; (e) legend.