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(a) Typical protease class structural template. The seven parameters used to define the template are distances between three Cα atoms, distances between three Cβ atoms and the angle between the planes formed by the three Cα and the three Cβ atoms of the active site residues. (b) Output of a search carried out for yeast YDR533c structure (1QVV) shows a putative metal-binding site predicted by PAR-3D.
