Dataset Information

Low-ORP anaerobiosis - Restricting fermentative potential by proteome remodeling: an adaptive strategy evidenced in Bacillus cereus

ABSTRACT: Not available

INSTRUMENT(S): LTQ Orbitrap, instrument model

ORGANISM(S): Bacillus Cereus (strain Atcc 14579 / Dsm 31)

SUBMITTER: Geremy CLAIR

PROVIDER: PRD000435 | Pride | 2013-03-25

REPOSITORIES: Pride

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Dataset's files

Source:

			Action	DRS
	PRIDE_Exp_Complete_Ac_17314.pride.mgf.gz	Mgf
	PRIDE_Exp_Complete_Ac_17314.pride.mztab.gz	Mztab
	PRIDE_Exp_Complete_Ac_17314.xml.gz	Xml
	PRIDE_Exp_Complete_Ac_17319.pride.mgf.gz	Mgf
	PRIDE_Exp_Complete_Ac_17319.pride.mztab.gz	Mztab

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Publications

Restricting fermentative potential by proteome remodeling: an adaptive strategy evidenced in Bacillus cereus.

Clair Gérémy G Armengaud Jean J Duport Catherine C

Molecular & cellular proteomics : MCP 20120109 6

Pathogenesis hinges on successful colonization of the gastrointestinal (GI) tract by pathogenic facultative anaerobes. The GI tract is a carbohydrate-limited environment with varying oxygen availability and oxidoreduction potential (ORP). How pathogenic bacteria are able to adapt and grow in these varying conditions remains a key fundamental question. Here, we designed a system biology-inspired approach to pinpoint the key regulators allowing Bacillus cereus to survive and grow efficiently under ...[more]

PMID: 22232490

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Project description:BACKGROUND:Bacillus cereus biovar anthracis (Bcbva) is an emergent bacterium closely related to Bacillus anthracis, the etiological agent of anthrax. The latter has a worldwide distribution and usually causes infectious disease in mammals associated with savanna ecosystems. Bcbva was identified in humid tropical forests of Côte d'Ivoire in 2001. Here, we characterize the potential geographic distributions of Bcbva in West Africa and B. anthracis in sub-Saharan Africa using an ecological niche modeling approach. METHODOLOGY/PRINCIPAL FINDINGS:Georeferenced occurrence data for B. anthracis and Bcbva were obtained from public data repositories and the scientific literature. Combinations of temperature, humidity, vegetation greenness, and soils values served as environmental variables in model calibrations. To predict the potential distribution of suitable environments for each pathogen across the study region, parameter values derived from the median of 10 replicates of the best-performing model for each pathogen were used. We found suitable environments predicted for B. anthracis across areas of confirmed and suspected anthrax activity in sub-Saharan Africa, including an east-west corridor from Ethiopia to Sierra Leone in the Sahel region and multiple areas in eastern, central, and southern Africa. The study area for Bcbva was restricted to West and Central Africa to reflect areas that have likely been accessible to Bcbva by dispersal. Model predicted values indicated potential suitable environments within humid forested environments. Background similarity tests in geographic space indicated statistical support to reject the null hypothesis of similarity when comparing environments associated with B. anthracis to those of Bcbva and when comparing humidity values and soils values individually. We failed to reject the null hypothesis of similarity when comparing environments associated with Bcbva to those of B. anthracis, suggesting that additional investigation is needed to provide a more robust characterization of the Bcbva niche. CONCLUSIONS/SIGNIFICANCE:This study represents the first time that the environmental and geographic distribution of Bcbva has been mapped. We document likely differences in ecological niche-and consequently in geographic distribution-between Bcbva and typical B. anthracis, and areas of possible co-occurrence between the two. We provide information crucial to guiding and improving monitoring efforts focused on these pathogens.