Detailed Information on Publication Record
2015
Proteomic responses to a methyl viologen-induced oxidative stress in the wild type and FerB mutant strains of Paracoccus denitrificans
PERNIKÁŘOVÁ, Vendula, Vojtěch SEDLÁČEK, David POTĚŠIL, Iva PROCHÁZKOVÁ, Zbyněk ZDRÁHAL et. al.Basic information
Original name
Proteomic responses to a methyl viologen-induced oxidative stress in the wild type and FerB mutant strains of Paracoccus denitrificans
Name in Czech
Proteomická odezva na oxidační stres vyvolaný methylviologenem u divokého a FerB-mutentního kmene Paracoccus denitrificans
Authors
PERNIKÁŘOVÁ, Vendula (203 Czech Republic, belonging to the institution), Vojtěch SEDLÁČEK (203 Czech Republic, belonging to the institution), David POTĚŠIL (203 Czech Republic, belonging to the institution), Iva PROCHÁZKOVÁ (203 Czech Republic, belonging to the institution), Zbyněk ZDRÁHAL (203 Czech Republic, belonging to the institution), Pavel BOUCHAL (203 Czech Republic, belonging to the institution) and Igor KUČERA (203 Czech Republic, guarantor, belonging to the institution)
Edition
Journal of Proteomics, Amsterdam, ELSEVIER SCIENCE BV, 2015, 1874-3919
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10600 1.6 Biological sciences
Country of publisher
Netherlands
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 3.867
RIV identification code
RIV/00216224:14310/15:00080836
Organization unit
Faculty of Science
UT WoS
000357243000006
Keywords in English
Paracoccus denitrificans; methyl viologen; oxidative stress; flavoprotein; flavin reductase; microbial proteomics
Tags
International impact, Reviewed
Změněno: 20/7/2019 14:21, prof. RNDr. Igor Kučera, DrSc.
Abstract
V originále
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.
Links
ED1.1.00/02.0068, research and development project |
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GAP503/12/0369, research and development project |
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GA14-19250S, research and development project |
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