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Impact of adcR delation on the transcriptome of Streptococcus pneumoniae D39 in the presence of Ni2+

ABSTRACT: Transcriptome comparison of the Streptococcus pneumoniae D39 wild-type to D39 ΔadcR grown in CDM with 0.3 mM Ni2+

ORGANISM(S): Streptococcus pneumoniae D39

PROVIDER: GSE73851 | GEO | 2015/11/20

SECONDARY ACCESSION(S): PRJNA298224

REPOSITORIES: GEO

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Transcriptome response of the Streptococcus pneumoniae D39 wild-type to Ni2+

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Impact of adcR delation on the transcriptome of Streptococcus pneumoniae D39 in the presence of Zinc

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D39 wild-type vs D39 ÎadcR In CDM with 0.3 mM Ni2+

Project description:By using the transcriptomic approach, we have elucidated the effect of Ni2+ on the global gene expression of S. pneumoniae D39 by identifying several differentially expressed genes/operons in the presence of a high extracellular concentration of Ni2+. The genes belonging to the AdcR regulon (adcRCBA, adcAII-phtD, phtA, phtB and phtE) and the PsaR regulon (pcpA, prtA and psaBCA) were highly upregulated in the presence of Ni2+. We have further studied the role of Ni2+ in the regulation of the AdcR regulon by using ICP-MS analysis, electrophoretic mobility shift assays and transcriptional lacZ-reporter studies, and demonstrate that Ni2+ is directly involved in the derepression of the AdcR regulon via the Zn2+-dependent repressor AdcR, and has an opposite effect on the expression of the AdcR regulon as compared to Zn2+. Comparison of the Streptococcus pneumoniae D39 wild-type vs D39 ÎadcR in CDM Plus 0.3 mM Ni2+ Two condition design comparison of Wild-type strain vs mutant strain including a dye swap

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