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Staphylococcus aureus subsp. aureus USA300

ABSTRACT: Expression from Staphylococcus aureus strain USA300-lac during low and 2M NaCl exposure

PROVIDER: PRJNA198901 | ENA |

REPOSITORIES: ENA

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Expression analysis of Staphylococcus aureus USA300 LAC in response to vehicle and benzbromarone.

Project description:Compilation fo whole genome gene expression changes in Staphylococcus aureus USA300 LAC cultures grown in the presence of vehicle or the anti-gout drug benzbromarone. The drug was intially screened as effective against the agr quorum sensing system in Staphylococcus aureus AH1677. A microarray study using total RNA harvested from three cultures of Staphylococcus aureus USA300 LAC plus vehicle control and three cultures of Staphylococcus aureus USA300 LAC plus 12 uM benzbromarone.

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Expression from Staphylococcus aureus strain USA300-lac during low and 2M NaCl exposure

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Elucidation of the CodY target genes in Staphylococcus aureus USA300 using ChIPexo

Project description:CodY is a highly conserved global transcriptional factor that regulates the expression of dozens of genes related to metabolism and virulence in Staphylococcus aureus. The S. aureus CodY regulon has been studied in vitro. However, in vivo CodY DNA-binding activity and the identity of the corresponding target genes remain unknown due to lack of a ChIP-grade monoclonal antibody. Using a novel CodY monoclonal antibody that we developed in established ChIP-exo protocols, we report in vivo target genes of CodY in two S. aureus USA300 clinical strains (TCH1516 and LAC). The total number of CodY-binding sites exceeded 110, but their location varied between the two strains. The majority of the identified binding sites were located within the promoter regions. Based on the sequences of the CodY-binding sites, a model of CodY interaction with DNA is proposed. Furthermore, S. aureus CodY protein is highly conserved across a G+C Gram-positive species, including Bacillus subtilis and Listeria monocytogenes, and thus this study paves the way for exploration of the differential binding of CodY among a range of gram-positive species, including pathogenic ones

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