Figure 4 - full size

 

Figure 4.
Figure 4. Ribbon tracing of the GTPase domain of YloQ (A) and Era (B). The ribbons are colour-ramped from the N terminus (blue) to the C terminus (red). The secondary structure elements are labelled. In YloQ, the break in the ribbon connecting a4 to b12 is caused by residues 187-205 being disordered and absent from the model. Topology diagrams of YloQ (C) and Era (D) illustrating the circular permutation of the GTPase domain.

The above figure is reprinted by permission from Elsevier: J Mol Biol (2004, 340, 767-782) copyright 2004.