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Delaunay tessellation of HIV-1 PR. (a) Ribbon and (b) ball and stick diagrams depicting the 99-residue single chain of HIV-1 PR are based on atomic coordinates provided by PDB accession code 3phv. (c) Delaunay tessellation of HIV-1 PR is superimposed over a Cα trace of the protein (drawn in red). The PR tessellation was generated using the center of mass coordinates of the amino acid side chains (Cα for glycine), which are represented by the tetrahedral vertices.
