Figure 2 - full size

Figure 2.
Figure 2: Structure of the human alpha--thrombin Met-SC(1 -325) complex. Ribbon plot showing the symmetric dimer in the asymmetric unit. Thrombin is shown in yellow and gold; SC is shown in red and salmon. The side chains of thrombin's active-site residues are shown with all non-hydrogen atoms and are circled in blue. Both monomers are related by an exact but crystallographically 'local' two-fold rotation axis.