Figure 1 - full size

 

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.

The above figure is reprinted by permission from Macmillan Publishers Ltd: Nat Struct Biol (1999, 6, 1113-1117) copyright 1999.