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TranscriptomicsListeria monocytogenes SOS response determined after mitomycin C exposure
The SOS response is a conserved pathway that is activated under certain stress conditions and is regulated by the repressor LexA and the activator RecA. The food-borne pathogen Listeria monocytogenes contains RecA and LexA homologs, but their roles in Listeria have not been established. In this stud...
ORGANISM(S): Listeria monocytogenes EGD-e 
2010-05-19 | E-GEOD-12634 | biostudies-arrayexpress
TranscriptomicsAssessment of CcpA-mediated catabolite control of metabolism and enterotoxin production in Bacillus cereus ATCC 14579
In Bacillus cereus the catabolite control protein CcpA was shown to be involved in optimizing the efficiency of glucose catabolism by activating genes encoding glycolytic enzymes including a non-phosphorylating glyceraldehyde-3-phosphate dehydrogenase that mediates conversion of D-glyceraldehyde 3-p...
ORGANISM(S): Bacillus cereus ATCC 14579 
2010-05-25 | E-GEOD-7843 | biostudies-arrayexpress
TranscriptomicsComparative transcriptome and phenotype analysis of acid-stressed Bacillus cereus strain ATCC 14579
The food-borne human pathogen Bacillus cereus is found in environments that often have a low pH, such as food and soil. The physiological response upon exposure to several levels of acidity were investigated of B. cereus model strain ATCC 14579, to elucidate the response of B. cereus to acid stress....
ORGANISM(S): Bacillus cereus 
2010-06-25 | E-GEOD-13711 | biostudies-arrayexpress
TranscriptomicsComparative transcriptome and phenotype analysis of acid-stressed Bacillus cereus strain ATCC 10987
The food-borne human pathogen Bacillus cereus is found in environments that often have a low pH, such as food and soil. The physiological response upon exposure to several levels of acidity were investigated of B. cereus model strain ATCC 10987, to elucidate the response of B. cereus to acid stress....
ORGANISM(S): Bacillus cereus 
2010-06-25 | E-GEOD-13729 | biostudies-arrayexpress
TranscriptomicsA novel hybrid kinase is essential for regulating the σB-mediated stress response of Bacillus cereus.
A common bacterial strategy for monitoring environmental challenges is to use two-component systems, which consist of a sensor histidine kinase (HK) and a response regulator (RR). In the food-borne pathogen Bacillus cereus, the alternative sigma factor σB is activated by the RR RsbY. Here we presen...
ORGANISM(S): Bacillus cereus ATCC 14579 
2010-06-24 | E-GEOD-14589 | biostudies-arrayexpress
TranscriptomicsThe sigmaB regulon of B. cereus ATCC14579
The alternative sigma factor sigmaB has an important role in the acquisition of stress-resistance in many gram-positive bacteria. In the foodborne pathogen Bacillus cereus sigmaB is activated strongly upon a heat shock and other stress conditions. Here we describe the identification of the set of si...
ORGANISM(S): Bacillus cereus ATCC 14579 
2010-07-01 | E-GEOD-6005 | biostudies-arrayexpress
TranscriptomicsTranscriptomic and physiological responses of Bacillus cereus to organic and inorganic acid down-shocks
Comparative phenotype and transcriptome analyses were performed with Bacillus cereus ATCC 14579 exposed to acid down-shock to pH 5.5 set with different acidulants. When acidified with hydrochloric acid (HCl), growth was diminished, whereas 2 mM undissociated lactic acid (HL) or acetic acid (HAc) sto...
ORGANISM(S): Bacillus cereus 
2010-06-25 | E-GEOD-15140 | biostudies-arrayexpress
TranscriptomicsPhysiological and transcriptional response of Bacillus cereus treated with low-temperature nitrogen gas plasma
Aims: To investigate the inactivation kinetics of Bacillus cereus vegetative cells upon exposure to low-temperature nitrogen gas plasma and to reveal the mode of inactivation by transcriptome profiling. Methods and results: Exponentially growing B. cereus cells were filtered and put on agar plates...
ORGANISM(S): Bacillus cereus 
2013-05-06 | E-GEOD-35060 | biostudies-arrayexpress
TranscriptomicsCharacterization of PlcRa, a new PlcR-like regulator involved in oxidative stress response and cysteine metabolism during early stationary phase in Bacillus cereus
PlcR, the major virulence transcriptional regulator in the Bacillus cereus group belongs to the RNPP quorum sensor family and is activated through interaction with the secreted heptapeptide PapR7 used as a signalling molecule. We identified using modeling analysis a structural homologue of PlcR, Plc...
ORGANISM(S): Bacillus cereus ATCC 14579 
2012-12-14 | E-GEOD-30514 | biostudies-arrayexpress
TranscriptomicsSalmonella under environmental stress
The aim of this study is to investigate the transcriptional response of S. Typhimurium to heat, osmotic, oxidative and acid stress under anoxic and oxic conditions and to non-stressed anoxic conditions.
ORGANISM(S): Salmonella enterica subsp. enterica serovar Typhimurium 
2013-11-11 | E-MTAB-1804 | biostudies-arrayexpress
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