Immobilization of Escherichia coli RNA polymerase and location of binding sites by use of chromatin immunoprecipitation and microarrays. Export

@article{citeulike:804392, abstract = {The genome-wide location of RNA polymerase binding sites was determined in Escherichia coli using chromatin immunoprecipitation and microarrays (chIP-chip). Cross-linked chromatin was isolated in triplicate from rifampin-treated cells, and DNA bound to RNA polymerase was precipitated with an antibody specific for the beta' subunit. The DNA was amplified and hybridized to "tiled" oligonucleotide microarrays representing the whole genome at 25-bp resolution. A total of 1,139 binding sites were detected and evaluated by comparison to gene expression data from identical conditions and to 961 promoters previously identified by established methods. Of the detected binding sites, 418 were located within 1,000 bp of a known promoter, leaving 721 previously unknown RNA polymerase binding sites. Within 200 bp, we were able to detect 51\% (189/368) of the known sigma70-specific promoters occurring upstream of an expressed open reading frame and 74\% (273/368) within 1,000 bp. Conversely, many known promoters were not detected by chIP-chip, leading to an estimated 26\% negative-detection rate. Most of the detected binding sites could be associated with expressed transcription units, but 299 binding sites occurred near inactive transcription units. This map of RNA polymerase binding sites represents a foundation for studies of transcription factors in E. coli and an important evaluation of the chIP-chip technique.}, address = {Department of Engineering, UC San Diego Bioengineering, 9500 Gilman Drive, Dept 0412, La Jolla, CA 92093-0412, USA.}, author = {Herring, C. D. and Raffaelle, M. and Allen, T. E. and Kanin, E. I. and Landick, R. and Ansari, A. Z. and Palsson, B. {\O}.}, citeulike-article-id = {804392}, citeulike-linkout-0 = {http://dx.doi.org/10.1128/JB.187.17.6166-6174.2005}, citeulike-linkout-1 = {http://view.ncbi.nlm.nih.gov/pubmed/16109958}, citeulike-linkout-2 = {http://www.hubmed.org/display.cgi?uids=16109958}, doi = {10.1128/JB.187.17.6166-6174.2005}, issn = {0021-9193}, journal = {J Bacteriol}, keywords = {chip-chip, ecoli}, month = {September}, number = {17}, pages = {6166--6174}, posted-at = {2006-08-17 19:20:04}, priority = {2}, title = {Immobilization of Escherichia coli RNA polymerase and location of binding sites by use of chromatin immunoprecipitation and microarrays.}, url = {http://dx.doi.org/10.1128/JB.187.17.6166-6174.2005}, volume = {187}, year = {2005} }

TY - JOUR ID - citeulike:804392 L3 - citeulike-article-id:804392 N2 - The genome-wide location of RNA polymerase binding sites was determined in Escherichia coli using chromatin immunoprecipitation and microarrays (chIP-chip). Cross-linked chromatin was isolated in triplicate from rifampin-treated cells, and DNA bound to RNA polymerase was precipitated with an antibody specific for the beta' subunit. The DNA was amplified and hybridized to "tiled" oligonucleotide microarrays representing the whole genome at 25-bp resolution. A total of 1,139 binding sites were detected and evaluated by comparison to gene expression data from identical conditions and to 961 promoters previously identified by established methods. Of the detected binding sites, 418 were located within 1,000 bp of a known promoter, leaving 721 previously unknown RNA polymerase binding sites. Within 200 bp, we were able to detect 51% (189/368) of the known sigma70-specific promoters occurring upstream of an expressed open reading frame and 74% (273/368) within 1,000 bp. Conversely, many known promoters were not detected by chIP-chip, leading to an estimated 26% negative-detection rate. Most of the detected binding sites could be associated with expressed transcription units, but 299 binding sites occurred near inactive transcription units. This map of RNA polymerase binding sites represents a foundation for studies of transcription factors in E. coli and an important evaluation of the chIP-chip technique. IS - 17 JF - J Bacteriol SN - 0021-9193 AD - Department of Engineering, UC San Diego Bioengineering, 9500 Gilman Drive, Dept 0412, La Jolla, CA 92093-0412, USA. EP - 6174 TI - Immobilization of Escherichia coli RNA polymerase and location of binding sites by use of chromatin immunoprecipitation and microarrays. VL - 187 SP - 6166 KW - chip-chip KW - ecoli AU - Herring, CD AU - Raffaelle, M AU - Allen, TE AU - Kanin, EI AU - Landick, R AU - Ansari, AZ AU - Palsson, BØ PY - 2005/09// UR - http://dx.doi.org/10.1128/JB.187.17.6166-6174.2005 ER -