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Figure 1.
Figure 1. Protein fold of the soluble fumarate reductase.
a,b, Ribbon representation of fumarate reductase; molecule A of
the orthorhombic crystal form is depicted. The cytochrome domain
I is in orange and domains II, III and IV are in light blue,
dark blue and green, respectively. The orientation in (b) is
rotated 90° counter-clockwise horizontally and 90°
clockwise along the vertical axis with respect to (a). Both
figures were made using Molscript^30 and Raster3D^31. c,
Superposition of the structures of fumarate reductase in the
tetragonal form (green) and the orthorhombic crystal (molecule
A, red; molecule D, blue) using the C coordinates
of the FAD binding domain as the reference (figure generated
using TURBO-FRODO^28). The view is approximately along the axis
of rotation around the double hinge (see text) situated near
residue 503. For clarity, only domains I, II and IV in molecule
D of the orthorhombic crystal form (black lines) are shown.
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