The Sulfide-Responsive SqrR/BigR Homologous Regulator YgaV of Escherichia coli Controls Expression of Anaerobic Respiratory Genes and Antibiotic Tolerance.
The Sulfide-Responsive SqrR/BigR Homologous Regulator YgaV of Escherichia coli Controls Expression of Anaerobic Respiratory Genes and Antibiotic Tolerance.
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DOI:
10.3390/antiox11122359
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发表时间:
2022-11-28
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Compositions and activities of bacterial flora in the gastrointestinal tract significantly influence the metabolism, health, and disease of host humans and animals. These enteric bacteria can switch between aerobic and anaerobic growth if oxygen tension becomes limited. Interestingly, the switching mechanism is important for preventing reactive oxygen species (ROS) production and antibiotic tolerance. Studies have also shown that intracellular and extracellular sulfide molecules are involved in this switching control, although the mechanism is not fully clarified. Here, we found that YgaV, a sulfide-responsive transcription factor SqrR/BigR homolog, responded to sulfide compounds in vivo and in vitro to control anaerobic respiratory gene expression. YgaV also responded to H2O2 scavenging in the enteric bacterium Escherichia coli. Although the wild-type (WT) showed increased antibiotic tolerance under H2S-atmospheric conditions, the ygaV mutant did not show such a phenotype. Additionally, antibiotic sensitivity was higher in the mutant than in the WT of both types in the presence and absence of exogenous H2S. These results, therefore, indicated that YgaV-dependent transcriptional regulation was responsible for maintaining redox homeostasis, ROS scavenging, and antibiotic tolerance.
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DOI:
10.1093/bioinformatics/btu638
发表时间:
2015-01-15
期刊:
Bioinformatics (Oxford, England)
影响因子:
--
作者:
Anders S;Pyl PT;Huber W
通讯作者:
Huber W
DOI:
10.1128/genomea.01038-14
发表时间:
2014-10-16
期刊:
Genome announcements
影响因子:
--
作者:
Grenier F;Matteau D;Baby V;Rodrigue S
通讯作者:
Rodrigue S
影响因子:
14.8
作者:
Capdevila DA;Walsh BJC;Zhang Y;Dietrich C;Gonzalez-Gutierrez G;Giedroc DP
通讯作者:
Giedroc DP
影响因子:
56.9
作者:
Keren, Iris;Wu, Yanxia;Lewis, Kim
通讯作者:
Lewis, Kim
影响因子:
11.4
作者:
Hou, Ningke;Yan, Zhenzhen;Liu, Huaiwei
通讯作者:
Liu, Huaiwei