Cited by 67Bacterial Genetics and BiotechnologyMicrobial Fuel Cells and BioremediationMicrobial metabolism and enzyme function

A Crp-Dependent Two-Component System Regulates Nitrate and Nitrite Respiration in Shewanella oneidensis

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Dong, Yangyang, Wang, Jixuan, Fu, Huihui, Zhou, Guangqi, Shi, Miaomiao, Gao, Haichun·2012·PLoS ONE

Abstract

We have previously illustrated the nitrate/nitrite respiratory pathway of Shewanella oneidensis, which is renowned for its remarkable versatility in respiration. Here we investigated the systems regulating the pathway with a reliable approach which enables characterization of mutants impaired in nitrate/nitrite respiration by guaranteeing biomass. The S. oneidensis genome encodes an Escherichia coli NarQ/NarX homolog SO3981 and two E. coli NarP/NarL homologs SO1860 and SO3982. Results of physiological characterization and mutational analyses demonstrated that S. oneidensis possesses a single two-component system (TCS) for regulation of nitrate/nitrite respiration, consisting of the sensor kinase SO3981(NarQ) and the response regulator SO3982(NarP). The TCS directly controls the transcription of nap and nrfA (genes encoding nitrate and nitrite reductases, respectively) but regulates the former less tightly than the latter. Additionally, phosphorylation at residue 57 of SO3982 is essential for its DNA-binding capacity. At the global control level, Crp is found to regulate expression of narQP as well as nap and nrfA. In contrast to NarP-NarQ, Crp is more essential for nap rather than nrfA.

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  1. [24]Rowe JL, Starnes GL, Chivers PT (2005) J Bacteriol. 187: 6317– 6323. PMC1236639 16159764

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Authors
Dong, Y., Wang, J., Fu, H., Zhou, G., Shi, M., & Gao, H.
Affiliations
Zhejiang University (CN)
Corresponding author
Gao, Haichun
Venue
PLoS ONE
Published
2012-12-11
Volume
7
Issue
12
Pages
e51643
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2071817568
Cited by
67
References
45
Citations by year
2025: 4 · 2024: 2 · 2022: 7 · 2021: 6 · 2020: 6 · 2019: 4 · 2018: 5 · 2017: 3 · 2016: 5 · 2015: 9 · 2014: 10 · 2013: 6
FWCI
4.80
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
Funders
  • National Natural Science Foundation of China (30870032, 973 Program)
  • National Key Research and Development Program of China (2010CB833803)
  • Natural Science Foundation of Zhejiang Province (R3110096)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
  • Physical Sciences › Environmental Science › Environmental Engineering › Microbial Fuel Cells and Bioremediation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Microbial metabolism and enzyme function
Keywords
Shewanella oneidensis, two-component systems, C-reactive protein, transcriptional regulation, nitrate reductase, nitrite reductase, nrfA gene, sensor kinase, response regulator phosphorylation, DNA binding, global gene regulation
MeSH terms
Cyclic AMP Receptor Protein, DNA-Binding Proteins, Escherichia coli, Membrane Proteins, Nitrate Reductases, Nitrates, Nitrite Reductases, Nitrites, Phosphoproteins, Respiration, Sequence Homology, Shewanella, Escherichia coli Proteins

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