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Molecular interactions of the active site residues of protomer B with the C-terminal residues of protomer B′.A, stereo view of the electron density map of the C-terminal region (red stick) of protomer B′ bound in the S pockets (cyan stick) of protomer B. B, details of the molecular interactions between the active site S1-S6 pockets of protomer B and the C-terminal residues of protomer B′. H-bonds are shown as green broken lines.
