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. 2012 May 30;12:85. doi: 10.1186/1471-2180-12-85

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Copyright ©2012 Zhang et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Roles of methionine in the H₂O₂resistance. (A) The amount of uptaken methionine in the wild type (WT) and ΔperR in cells grown to late-log phase. (B) The effects of the methionine to H₂O₂ resistance. Survival rates of wild-type (WT) and ΔperR in CDM with 5 mM of H₂O₂ challenge for 30 min. 0, 10 and 100 mg/l of methionine were added in the methionine-free basal CDM respectively.