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(A) Molecular surface of MMP-9 catalytic domain (cyan) showing active site zinc ion as dark blue ball and the docked hexacarboxylic acid dendrimer 8a (yellow sticks), (B) 3D binding mode of 8a (yellow sticks), and (C) 2D binding mode of 8a in the catalytic domain of MMP-9 (PDB ID: 1GKC(78)).
