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Antioxidants
Volume 10
Issue 6
10.3390/antiox10060839
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Review

ROS Defense Systems and Terminal Oxidases in Bacteria

by
Vitaliy B. Borisov
1,*,
Sergey A. Siletsky
1,
Martina R. Nastasi
2 and
Elena Forte
2,*
1
Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Leninskie Gory, 119991 Moscow, Russia
2
Department of Biochemical Sciences, Sapienza University of Rome, Piazzale Aldo Moro, 5, 00185 Rome, Italy
*
Authors to whom correspondence should be addressed.
Antioxidants 2021, 10(6), 839; https://doi.org/10.3390/antiox10060839
Submission received: 26 April 2021 / Revised: 19 May 2021 / Accepted: 21 May 2021 / Published: 24 May 2021
(This article belongs to the Special Issue Redox Biology in Microorganisms)
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Abstract

Reactive oxygen species (ROS) comprise the superoxide anion (O2•−), hydrogen peroxide (H2O2), hydroxyl radical (•OH), and singlet oxygen (1O2). ROS can damage a variety of macromolecules, including DNA, RNA, proteins, and lipids, and compromise cell viability. To prevent or reduce ROS-induced oxidative stress, bacteria utilize different ROS defense mechanisms, of which ROS scavenging enzymes, such as superoxide dismutases, catalases, and peroxidases, are the best characterized. Recently, evidence has been accumulating that some of the terminal oxidases in bacterial respiratory chains may also play a protective role against ROS. The present review covers this role of terminal oxidases in light of recent findings.
Keywords: bacteria; redox enzymes; terminal oxidases; reactive oxygen species; oxidative stress bacteria; redox enzymes; terminal oxidases; reactive oxygen species; oxidative stress
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MDPI and ACS Style

Borisov, V.B.; Siletsky, S.A.; Nastasi, M.R.; Forte, E. ROS Defense Systems and Terminal Oxidases in Bacteria. Antioxidants 2021, 10, 839. https://doi.org/10.3390/antiox10060839

AMA Style

Borisov VB, Siletsky SA, Nastasi MR, Forte E. ROS Defense Systems and Terminal Oxidases in Bacteria. Antioxidants. 2021; 10(6):839. https://doi.org/10.3390/antiox10060839

Chicago/Turabian Style

Borisov, Vitaliy B., Sergey A. Siletsky, Martina R. Nastasi, and Elena Forte. 2021. "ROS Defense Systems and Terminal Oxidases in Bacteria" Antioxidants 10, no. 6: 839. https://doi.org/10.3390/antiox10060839

APA Style

Borisov, V. B., Siletsky, S. A., Nastasi, M. R., & Forte, E. (2021). ROS Defense Systems and Terminal Oxidases in Bacteria. Antioxidants, 10(6), 839. https://doi.org/10.3390/antiox10060839

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