Figure 6 - full size

 

Figure 6.
Fig. 6. Comparison of the calcium-binding sites of TG (green) and factor XIIIa (red). In factor XIIIa, the loop involved in calcium binding is oriented toward the Ca^2+-binding site, whereas in TG-GDP, the same loop is oriented toward GDP. Figure prepared with MOLSCRIPT (44) and RASTER3D (45).