Oxidative Stress in Shiga Toxin Production by Enterohemorrhagic Escherichia coli

Figure 2

Comparison of domain structures of E. coli LexA protein and cI repressors of bacteriophage λ [19] and Shiga toxin-converting bacteriophage 933W [23, 24]. Two domains of these proteins are shown, and crucial amino acid residues are marked. Upon stimulation by the activated form of RecA () both LexA and cI cleave their own molecules (at indicated positions) by the peptidase S24-like domains. The models were prepared using the DOG 1.0: Illustrator of Protein Domain Structures software [25].