Figure 4 - full size

 

Figure 4.
FIGURE 4. Dimer structure in the two PhTET1 complexes. A, ribbon representation of a dimer extracted from the tetracosamer quasi-atomic model (blue) superimposed to a dimer from the dodecamer x-ray structure (red). Cobalt ions are shown as spheres. The bottom monomers of each dimer were forced to match, hence the stereo picture illustrates the rotation of 14° of the upper PhTET1-24s monomer with respect to the center of mass of the PhTET1-12s dimer. A and Fig. 2A are related by a 90° rotation around the vertical axis. B, cut open surface representations of the PhTET1 edifices showing the position of one dimer in the tetrahedral complex (top) and in the octahedral assembly (bottom). The dimers are depicted and oriented as in A.

The above figure is reprinted by permission from the ASBMB: J Biol Chem (2006, 281, 36327-36337) copyright 2006.