Organization and evolution of the biological response to singlet oxygen stress.

Journal of Molecular Biology
Yann S DufourTimothy J Donohue

Abstract

The appearance of atmospheric oxygen from photosynthetic activity led to the evolution of aerobic respiration and responses to the resulting reactive oxygen species. In Rhodobacter sphaeroides, a photosynthetic alpha-proteobacterium, a transcriptional response to the reactive oxygen species singlet oxygen ((1)O(2)) is controlled by the group IV sigma factor sigma(E) and the anti-sigma factor ChrR. In this study, we integrated various large datasets to identify genes within the (1)O(2) stress response that contain sigma(E)-dependent promoters both within R. sphaeroides and across the bacterial phylogeny. Transcript pattern clustering and a sigma(E)-binding sequence model were used to predict candidate promoters that respond to (1)O(2) stress in R. sphaeroides. These candidate promoters were experimentally validated to nine R. sphaeroides sigma(E)-dependent promoters that control the transcription of 15 (1)O(2)-activated genes. Knowledge of the R. sphaeroides response to (1)O(2) and its regulator sigma(E)-ChrR was combined with large-scale phylogenetic and sequence analyses to predict the existence of a core set of approximately eight conserved sigma(E)-dependent genes in alpha-proteobacteria and gamma-proteobacteria. The bacteri...Continue Reading

Associated Datasets

Jun 30, 2010·Yann S DufourTimothy J Donohue

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Citations

Nov 3, 2009·Nature Reviews. Microbiology·Eva C Ziegelhoffer, Timothy J Donohue
Jun 10, 2010·Nucleic Acids Research·Yann S DufourTimothy J Donohue
Jul 28, 2010·PLoS Genetics·Yann S DufourTimothy J Donohue
Oct 3, 2012·PLoS Genetics·Yann S DufourTimothy J Donohue
Aug 24, 2012·PloS One·Nadezda MasloboevaHans-Martin Fischer
Aug 6, 2014·Proceedings of the National Academy of Sciences of the United States of America·Rachelle A S LemkeTimothy J Donohue
Nov 27, 2010·Environmental Microbiology·Bork Ansgar BerghoffGabriele Klug
Nov 13, 2009·Molecular Microbiology·Bork A BerghoffGabriele Klug
Mar 8, 2013·Current Opinion in Microbiology·Thorsten Mascher
Dec 17, 2014·PLoS Genetics·Saheed ImamTimothy J Donohue
Feb 28, 2015·PLoS Computational Biology·Saheed ImamTimothy J Donohue
Jun 10, 2017·Nature Communications·Seung-Hwan ChoiJung-Hye Roe
Jun 18, 2019·Molecular Microbiology·Joaquín R Otero-AsmanMaría A Llamas
Jul 19, 2020·The Journal of Biological Chemistry·Xiao-Hong Yu, John Shanklin
Sep 25, 2020·Journal of Bacteriology·Satoru SumiHideaki Takano
May 23, 2019·Molecular Microbiology·Michael A LonettoMark J Buttner
May 22, 2019·Molecular Microbiology·Timothy J Donohue
May 22, 2020·The Journal of Biological Chemistry·Rachelle A S LemkeTimothy J Donohue
May 21, 2020·MBio·Kimberly C LemmerTimothy J Donohue
Feb 13, 2021·NAR Genomics and Bioinformatics·Daniela Pinto, Rute R da Fonseca

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