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. Author manuscript; available in PMC: 2015 Jul 1.
Published in final edited form as: Medchemcomm. 2014 May 14;5(7):949–952. doi: 10.1039/C4MD00162A

Fig. 1.

Fig. 1

Triforcated hydrogen bonding interactions (red dotted lines) of an N-unsubstituted γ-lactam (cyan sticks) with some protease amino acids in the example of rupintrivir (PDB ID 1CQQ).