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@article{1300690,
author = {Pernikářová, Vendula and Sedláček, Vojtěch and Potěšil, David and Procházková, Iva and Zdráhal, Zbyněk and Bouchal, Pavel and Kučera, Igor},
article_location = {Amsterdam},
article_number = {July},
doi = {http://dx.doi.org/10.1016/j.jprot.2015.05.002},
keywords = {Paracoccus denitrificans; methyl viologen; oxidative stress; flavoprotein; flavin reductase; microbial proteomics},
language = {eng},
issn = {1874-3919},
journal = {Journal of Proteomics},
title = {Proteomic responses to a methyl viologen-induced oxidative stress in the wild type and FerB mutant strains of Paracoccus denitrificans},
url = {http://www.sciencedirect.com/science/article/pii/S1874391915002201},
volume = {125},
year = {2015}
}
TY - JOUR
ID - 1300690
AU - Pernikářová, Vendula - Sedláček, Vojtěch - Potěšil, David - Procházková, Iva - Zdráhal, Zbyněk - Bouchal, Pavel - Kučera, Igor
PY - 2015
TI - Proteomic responses to a methyl viologen-induced oxidative stress in the wild type and FerB mutant strains of Paracoccus denitrificans
JF - Journal of Proteomics
VL - 125
IS - July
SP - 68-75
EP - 68-75
PB - ELSEVIER SCIENCE BV
SN - 18743919
KW - Paracoccus denitrificans
KW - methyl viologen
KW - oxidative stress
KW - flavoprotein
KW - flavin reductase
KW - microbial proteomics
UR - http://www.sciencedirect.com/science/article/pii/S1874391915002201
L2 - http://www.sciencedirect.com/science/article/pii/S1874391915002201
N2 - FerB is a cytoplasmic flavoprotein from the soil bacterium Paracoccus denitrificans with a putative role in defense against oxidative stress. To further explore this hypothesis, we compared protein variations upon methyl viologen treatment in wild-type and FerB mutant strains by a quantitative proteomic analysis based on iTRAQ-3DLC–MS/MS analysis. The proteins showing the most prominent increase in abundance were assigned to carbon fixation and sulfur assimilatory pathways. By employing these proteins as indirect markers, oxidative stress was found to be 15% less severe in the wild-type than in the FerB-deficient mutant cells. Oxidative stress altered the levels of proteins whose expression is dependent on the transcriptional factor FnrP. The observed down-regulation of the fnrP regulon members, most notably that of nitrous oxide reductase, was tentatively explained by an oxidative degradation of the [4Fe–4S] center of FnrP leading to a protein form which no longer activates transcription. While the level of FerB remained relatively constant, two proteins homologous to FerB accumulated during oxidative stress. When their genes were expressed in Escherichia coli, neither of the protein products contained a bound flavin, whereas they both had a high activity of flavin reductase, one preferentially utilizing NADH and the other NADPH.
ER -
PERNIKÁŘOVÁ, Vendula, Vojtěch SEDLÁČEK, David POTĚŠIL, Iva PROCHÁZKOVÁ, Zbyněk ZDRÁHAL, Pavel BOUCHAL and Igor KUČERA. Proteomic responses to a methyl viologen-induced oxidative stress in the wild type and FerB mutant strains of Paracoccus denitrificans. \textit{Journal of Proteomics}. Amsterdam: ELSEVIER SCIENCE BV, 2015, vol.~125, July, p.~68-75. ISSN~1874-3919. Available from: https://dx.doi.org/10.1016/j.jprot.2015.05.002.
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