KatP contributes to OxyR-regulated hydrogen peroxide resistance in Escherichia co/i serotype O157:H7.

The article presents a study which examines the contributions of katP, a catalase-peroxidase gene, to peroxide-mediated oxidative damage in Escherichia coli. It states that the study used various microbiological assays to examine the expression including the disc diffusion and scavenging assays. It notes that protection against organic and inorganic peroxides cannot be provided with the high concentration and overexpression of katP. It concludes that the peroxides are similar to those of E. coli.