Intracellular Free Iron and Its Potential Role in Ultrahigh-Pressure-Induced Inactivation of Escherichia coli | Zendy

Yan Yuan | Zendy; Joy WaiteCusic | Zendy; Periannan Kuppusamy | Zendy; Ahmed E. Yousef | Zendy

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Intracellular Free Iron and Its Potential Role in Ultrahigh-Pressure-Induced Inactivation of Escherichia coli

Author(s) -

Yan Yuan,

Joy WaiteCusic,

Periannan Kuppusamy,

Ahmed E. Yousef

Publication year - 2012

Publication title -

applied and environmental microbiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.552

H-Index - 324

eISSN - 1070-6291

pISSN - 0099-2240

DOI - 10.1128/aem.02202-12

Subject(s) - escherichia coli , intracellular , chemistry , biophysics , microbiology and biotechnology , biochemistry , biology , gene

Intracellular free iron of Escherichia coli was determined by whole-cell electron paramagnetic resonance spectrometry. Ultrahigh pressure (UHP) increased both intracellular free iron and cell lethality in a pressure-dose-dependent manner. The iron chelator 2,2'-dipyridyl protected cells against UHP treatments. A mutation that produced iron overload conditions sensitized E. coli to UHP treatment.

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