Involvement of a 1-Cys Peroxiredoxin in Bacterial Virulence
نویسندگان
چکیده
منابع مشابه
Involvement of a 1-Cys Peroxiredoxin in Bacterial Virulence
The killing of bacterial pathogens by macrophages occurs via the oxidative burst and bacteria have evolved to overcome this challenge and survive, using several virulence and defense strategies, including antioxidant mechanisms. We show here that the 1-Cys peroxiredoxin LsfA from the opportunistic pathogen Pseudomonas aeruginosa is endowed with thiol-dependent peroxidase activity that protects ...
متن کاملRegulation of 1-cys peroxiredoxin expression in lung epithelial cells.
1-cys peroxiredoxin (1-cys Prx), the only member of a Prx subfamily that contains a single conserved cysteine residue, is abundant in lung. This bifunctional protein has both glutathione peroxidase and phospholipase A2 activities compatible with a role both in protection against lung oxidant injury and also in lung phospholipid metabolism. Here we studied the developmental expression of 1-cys P...
متن کاملRegulation of 1-cys peroxiredoxin expression in the process of stromal wound healing after photorefractive keratectomy.
PURPOSE To investigate 1-cys peroxiredoxin (1-cysPrx) expression during the corneal wound-healing process after PRK and the effect of growth factors on 1-cysPrx expression in cultured bovine keratocytes (BKs). METHODS Rat corneas were excised at 4 hours, 12 hours, 1 day, 3 days, and 7 days after PRK. Expression of 1-cysPrx in the corneas was examined by immunohistochemical, Northern blot, and...
متن کاملReversal of 2-Cys peroxiredoxin oligomerization by sulfiredoxin.
Hydrogen peroxide (H(2)O(2)) regulates the structure and function of 2-Cys peroxiredoxins (Prxs). Upon oxidation by excess H(2)O(2), Prxs become overoxidized to a sulfinic acid of its peroxidatic cysteine residue, resulting in a structural change from a small oligomer with peroxidase function to a large oligomer with chaperone function. Then, sulfiredoxin (Srx) reduces the overoxidized Prxs by ...
متن کاملInduction of 1-cys peroxiredoxin expression by oxidative stress in lung epithelial cells.
1-Cys peroxiredoxin (1-cysPrx), a member of the peroxiredoxin family that contains a single conserved cysteine residue, reduces a broad spectrum of hydroperoxides. We studied changes in 1-cysPrx expression in rat lungs and lung cell lines in response to oxidative stress due to hyperoxia, H2O2, or paraquat. After 60 h of hyperoxia (>95% O2), mRNA and protein levels of 1-cysPrx and peroxidase act...
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ژورنال
عنوان ژورنال: PLoS Pathogens
سال: 2014
ISSN: 1553-7374
DOI: 10.1371/journal.ppat.1004442