Unknown,Transcriptomics,Genomics,Proteomics

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ChIP-chip of E. coli K-12 MG1655 with antibody against PurR-8myc under various conditions.


ABSTRACT: We integrated transcription factor binding regions and mRNA transcript abundance to elucidate the PurR regulon experimentally. To measure transcription factor binding at a genome scale, we employed a ChIP-chip method to derivative strains of E. coli K-12 MG1655 harboring PurR-8myc under various conditions. A four ChIP-chip study under two separate culture conditions. The high-density oligonucleotide tiling arrays used were consisted of 371,034 oligonucleotide probes spaced 25 bp apart (25-bp overlap between two probes) across the E. coli genome.

ORGANISM(S): Escherichia coli str. K-12 substr. MG1655

SUBMITTER: Bernhard Palsson 

PROVIDER: E-GEOD-26589 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

The PurR regulon in Escherichia coli K-12 MG1655.

Cho Byung-Kwan BK   Federowicz Stephen A SA   Embree Mallory M   Park Young-Seoub YS   Kim Donghyuk D   Palsson Bernhard Ø BØ  

Nucleic acids research 20110513 15


The PurR transcription factor plays a critical role in transcriptional regulation of purine metabolism in enterobacteria. Here, we elucidate the role of PurR under exogenous adenine stimulation at the genome-scale using high-resolution chromatin immunoprecipitation (ChIP)-chip and gene expression data obtained under in vivo conditions. Analysis of microarray data revealed that adenine stimulation led to changes in transcript level of about 10% of Escherichia coli genes, including the purine bios  ...[more]

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