The cell membrane-shielding function of eicosapentaenoic acid for Escherichia coli against exogenously added hydrogen peroxide.

Abstract:

:The colony-forming ability of catalase-deficient Escherichia coli mutant genetically modified to produce eicosapentaenoic acid (EPA) showed less decrease than in a control strain producing no EPA, when treated with 0.3mM hydrogen peroxide (H(2)O(2)) under non-growth conditions. H(2)O(2)-induced protein carbonylation was enhanced in cells lacking EPA. The amount of fatty acids was decreased more significantly for cells lacking EPA than for those producing EPA. Much lower intracellular concentrations of H(2)O(2) were detected for cells with EPA than those lacking EPA. These results suggest that cellular EPA can directly protect cells against oxidative damage by shielding the entry of exogenously added H(2)O(2).

journal_name

FEBS Lett

journal_title

FEBS letters

authors

Nishida T,Orikasa Y,Watanabe K,Okuyama H

doi

10.1016/j.febslet.2006.11.030

subject

Has Abstract

pub_date

2006-12-11 00:00:00

pages

6690-4

issue

28-29

eissn

0014-5793

issn

1873-3468

pii

S0014-5793(06)01349-4

journal_volume

580

pub_type

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