Figure 5From: PSP: rapid identification of orthologous coding genes under positive selection across multiple closely related prokaryotic genomesThree-dimensional structures of AmpC and Pbp2 proteins. A) Three-dimensional structure of β-lactamase (AmpC). B) Three-dimensional structure of penicillin-binding protein (Pbp2). Sites that show evidences for positive selection (PP > 99%) are depicted as red spheres. And sites (PP > 95%) are depicted as yellow spheres.Back to article page