Fig. 7: FasR-mediated long acyl-CoA sensing and response mechanism.

The model combines information from the three crystal structures presented in this report (FasRΔ33-C14, FasRΔ33-C20-CoA and FasR–DNA complexes). A free structure of FasR with no bound effectors nor DNA has not been determined experimentally, and is not currently known whether it builds up to detectable concentrations within the living cell. The dotted arrows reflect plausible equilibria. See Supplementary Movie 3 to better grasp the anticipated dynamics.