Figure 1
From: Computational analysis of LexA regulons in Cyanobacteria
Phylogenetic relationships of 27 cyanobacterial LexA proteins and their DNA-binding domains. (A) Phylogenetic relationships of the 27 cyanobacterial LexA proteins. The tree is rooted with the LexA in E. coli K12. Bootstrap values are shown on the nodes. (B) Alignment of the DNA-binding domain (DBD) of the 27 cyanobacterial LexA proteins. The DBD of LexA contains a helix-turn-helix motif, and DNA-contacting residues are located in helix III, and are labelled by vertical arrows.