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. Author manuscript; available in PMC: 2014 Mar 26.
Published in final edited form as: Biochemistry. 2013 Mar 13;52(12):10.1021/bi400048s. doi: 10.1021/bi400048s

Figure 3.

Figure 3

Crystal structure of the R39 DD-peptidase in complex with the specific trifluoroketone 12. In this stereoview, the electron density is a |Fo|−|Fc| difference map calculated from the final coordinates of the model refined in the absence of ligand. The resulting positive density is shown with green hatching and is contoured at 2.5 σ. The protein backbone and side chains are in orange and the trifluoroketone in grey. Heteroatoms are red (oxygen), blue (nitrogen), orange (sulfur) and yellow (fluorine). This figure was generated using PYMOL (www.pymol.sourceforge.net).