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Figure 3.
Fig. 3. Stereo representation of the interactions made by
the ~Lys18-Leu19-X-X-Asp22~ centerpiece residues of IA[3] in the
vicinity of the active site of proteinase A. Proteinase A
residues are in green with the catalytic water molecule depicted
as a blue sphere. The side chains of Lys18, Leu19, and Asp22
plus the relevant segment of the IA[3] helix backbone are in
brown. Hydrogen bonding distances are shown.
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