Figure 1 - full size

 

Figure 1.
Figure 1. Structural Comparison of the PAS Domain of ThkA and the PAS-Sensor Domain of FixL
(A) Structure of the PAS domain of ThkA.
(B) In the FixL PAS domain, the structures of the oxy (red) and deoxy (gray) forms are superimposed. The heme in FixL is shown as a stick model.

The above figure is reprinted by permission from Cell Press: Structure (2009, 17, 1333-1344) copyright 2009.