Figure 4 - full size

 

Figure 4.
Fig. 4. Structure of UCH-L1's active site. Backbone atoms are presented as semitransparent orange ribbons. Atoms of interest are presented as sticks and spheres. Oxygens, red; nitrogen, blue; sulfur, gold; chlorine, green. Distances between two atoms are presented with gray dashed lines. Electron density (contoured at 1.5 ) is shown as gray lines.