Transcriptome analysis of Streptococcus pneumoniae D39 in the presence of cobalt.

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The data described in this article relate to the genome-wide transcriptional profiling of Streptococcus pneumoniae D39, either in the presence or absence of 0.5 mM Co(2 +) in chemically defined medium (CDM) using DNA microarray analysis. Genes belonging to a broad range of cellular processes such as virulence, transport and efflux systems, stress response and surface attachment were differentially expressed in the presence of Co(2 +). We used transcriptional lacZ assays and electrophoretic mobility shift assays (EMSAs) to confirm our results [1]. 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