Sense and sensor ability: redox-responsive regulators in Listeria monocytogenes.

Sense and sensor ability: redox-responsive regulators in Listeria monocytogenes.
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感官和传感器能力:单核细胞增生李斯特菌的氧化还原响应调节剂。

DOI:
10.1016/j.mib.2018.10.006
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发表时间:
2019-03
影响因子:
5.4
通讯作者:
Reniere ML
Reniere ML
中科院分区:
生物学2区
文献类型:
--
作者:
Ruhland BR;Reniere ML

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单核增生李斯特菌是一种革兰氏阳性细菌,在自然界中作为腐生菌繁殖,在哺乳动物宿主中作为细胞内病原体繁殖。这两种环境都以氧化还原应激的形式构成潜在的危险。此外,内源性活性氧(ROS)作为有氧代谢的副产物不断产生。来自ROS的氧化还原应激可以破坏蛋白质、脂质和DNA,这使得细菌进化出感知和解毒ROS的机制非常有利。本文综述了Lm中5种氧化还原反应调节因子:OhrR(感知有机氢过氧化物)、PerR(过氧化物)、Rex (NAD+/NADH稳态)、SpxA1/2(二硫胁迫)和PrfA(感染期间氧化还原应激)。
Listeria monocytogenes is a Gram-positive bacterium that thrives in nature as a saprophyte and in the mammalian host as an intracellular pathogen. Both environments pose potential danger in the form of redox stress. In addition, endogenous reactive oxygen species (ROS) are continuously generated as by-products of aerobic metabolism. Redox stress from ROS can damage proteins, lipids, and DNA, making it highly advantageous for bacteria to evolve mechanisms to sense and detoxify ROS. This review focuses on the five redox-responsive regulators in Lm: OhrR (to sense organic hydroperoxides), PerR (peroxides), Rex (NAD+/NADH homeostasis), SpxA1/2 (disulfide stress), and PrfA (redox stress during infection).
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