Figure 5From: Solution structure of the parvulin-type PPIase domain of Staphylococcus aureus PrsA – Implications for the catalytic mechanism of parvulinsDetailed structure of the S. aureus PrsA-PPIase active site histidines. The most important NOE distance constraints determining the orientation of the active site histidine ring planes are indicated with green lines. This conformation of the histidines enables hydrogen bonding between the N1 positions of the histidine side chains. Visualisation was created using PyMol [34].Back to article page