Figure 1.
FIGURE 1. Crystal structure of rat CBG. A and B, ribbon
representation of rat CBG viewed from two different angles.
Secondary structure elements are named according to the common
serpin nomenclature. The -sheets A, B, and C are
colored in red, green, and blue, respectively. The trace of the
residues of the RCL not visible in electron density maps
(residues 329-338) is modeled by a dashed line. The steroid
(cortisol) is bound on top of sheet B and shown in yellow. C,
close-up of cortisol in the steroid-binding site. D,
representative portion of the final [A]-weighted 2F[o] -
F[c] electron density map contoured at 1.0 and showing cortisol
with the surrounding residues Arg^10 and Trp^362.
-sheets A, B, and C are
colored in red, green, and blue, respectively. The trace of the
residues of the RCL not visible in electron density maps
(residues 329-338) is modeled by a dashed line. The steroid
(cortisol) is bound on top of sheet B and shown in yellow. C,
close-up of cortisol in the steroid-binding site. D,
representative portion of the final 
[A]-weighted 2F[o] -
F[c] electron density map contoured at 1.0