The Role of the Exo-Xis Region in Oxidative Stress-Mediated Induction of Shiga Toxin-Converting Prophages

Figure 3

Alignment of amino acid sequences of E. coli LexA protein and cI repressors of bacteriophages and . Specific protein domains are indicated by grey background. Self-cleavage sites are underlined (two amino acid residues between which the cleavage occurs). The active sites of the peptidase domains are framed. Symbols under the sequence alignment indicate conserved sequence (), conservative mutations (:), semiconservative mutations (.), and nonconservative mutations ().