|
Figure 2.
FIG. 2. Structural characteristics of S-ovalbumin. a, the
overall main-chain structure of S-ovalbumin. The -helices
and -strands are shown in
rose and pink, respectively. b, overall structural differences
between native ovalbumin and S-ovalbumin. S-ovalbumin structure
(pink) is superimposed on native ovalbumin structure (white,
Protein Data Bank accession number 1OVA [PDB]
) in a C^a trace. The reactive center loop assumes almost the
same conformation as that of native ovalbumin. Marked motion of
the preceding loop of strand 1A away from strand 2A (125-128) is
displayed with a red arrow. Three observed configurational
inversions (Ser-164, Ser-236, and Ser-320) and two
conformational transitions (Phe-99 and Met-241) of S-ovalbumin
are shown in ball-and-stick form. The figures were produced with
molecule D using MOL-SCRIPT (48) and Raster3D (49).
|