Curation Information

Publication: CcpA ensures optimal metabolic fitness of Streptococcus pneumoniae.;Carvalho SM, Kloosterman TG, Kuipers OP, Neves AR;PloS one 2011; 6(10):e26707 [22039538]
TF: CcpA [A0A0H2ZQ65, view regulon]
Reported TF sp.: Streptococcus pneumoniae D39
Reported site sp.: Streptococcus pneumoniae D39
Created by: Elliot White
Curation notes: -

Experimental Process

Researchers used a consensus search of the CRE box (CcpA binding site) in the pneumoniae genome to compile a list of genes with CRE boxes in the promoter. They then cross-referenced that list with the results (trimmed to only significant results) of a DNA-array that compared wt to a CcpA deletion.

Transcription Factor Binding Sites

Sites reported in the paper
Sites matched in the genome

TTAAAAACGCTTGCAA

Gene Regulation

Regulated genes for each binding site are displayed below. Gene regulation diagrams show binding sites, positively-regulated genes, negatively-regulated genes, both positively and negatively regulated genes, genes with unspecified type of regulation. For each indvidual site, experimental techniques used to determine the site are also given.

Site sequence	Regulated genes	Gene diagram	Experimental techniques	TF function	TF type
TTAAAAACGCTTGCAA	malQ,		Experimental technique details Consensus search (ECO:0005624) Consensus search - ECO:0005624 This is a weak form of in-silico search, in which the consensus sequence for the motif is compared to genomic positions and the number of mismatches (between candidate site and consensus) is used as a measure of site-quality. - Experimental technique details DNA-array expression analysis (ECO:0005525) DNA-array expression analysis - ECO:0005525 DNA-arrays (or DNA-chips or microarrays) are flat slabs of glass, silicon or plastic onto which thousands of multiple short single-stranded (ss) DNA sequences (corresponding to small regions of a genome) have been attached. After performing a mRNA extraction in induced and non-induced cells, the mRNA is again reverse transcribed, but here the reaction is tweaked, so that the emerging cDNA contains nucleotides marked with different fluorophores for controls and experiment. Targets will hybridize by base-pairing with those probes that resemble them the most. The array can then be stimulated by a laser and scanned for fluorescence at two different wavelengths (control and induced). The ratio or log-ratio between the two fluorescence intensities corresponds to the induction level. -	activator	dimer