Fig. 1.
Structures of ToxRcyt bound to the toxT and ompU promoters. (A) Promoter regions covered by the partial ToxRcyt/toxTpro structures that were used to build the ToxRcyt/toxT composite model (Left) and by the ToxRcyt/ompUpro19 structure (Right). The toxTpro inverted repeat sequence is highlighted in cream color. Putative TcpP-binding regions are highlighted in blue. At the bottom, surface representations of the final ToxRcyt/toxT composite model and the ToxRcyt/ompU model. (B) ToxRcyt protein structure extracted from the ToxRcyt/ompU19 complex structure. Three different orientations of its ribbon representation are shown, with the main DNA-contacting regions, α-helix and β-strand elements indicated.