Figure 4
From: A structural model of the E. coli PhoB Dimer in the transcription initiation complex
Interactions between PhoB molecules and subunits (α-, β- and σ-subunits) of the polymerase complex. In Figure 4a, PhoB-a is drawn in both ribbon and transparent surface plots while the α- and σ-CTD are drawn in ribbon plots. The residues involved in binding are highlighted. In Figure 4b, the residues on the two PhoB molecules interacting with the subunits of the polymerase are highlighted with arrows.