Genome-wide mapping of the distribution of CarD, RNAP σA, and RNAP β on the Mycobacterium smegmatis chromosome using chromatin immunoprecipitation sequencing Journal Article
| Authors: | Landick, R.; Krek, A.; Glickman, M. S.; Socci, N. D.; Stallings, C. L. |
| Article Title: | Genome-wide mapping of the distribution of CarD, RNAP σA, and RNAP β on the Mycobacterium smegmatis chromosome using chromatin immunoprecipitation sequencing |
| Abstract: | CarD is an essential mycobacterial protein that binds the RNA polymerase (RNAP) and affects the transcriptional profile of Mycobacterium smegmatis and Mycobacterium tuberculosis [6]. We predicted that CarD was directly regulating RNAP function but our prior experiments had not determined at what stage of transcription CarD was functioning and at which genes CarD interacted with the RNAP. To begin to address these open questions, we performed chromatin immunoprecipitation sequencing (ChIP-seq) to survey the distribution of CarD throughout the M. smegmatis chromosome. The distribution of RNAP subunits β and σA were also profiled. We expected that RNAP β would be present throughout transcribed regions and RNAP σA would be predominantly enriched at promoters based on work in Escherichia coli [3], however this had yet to be determined in mycobacteria. The ChIP-seq analyses revealed that CarD was never present on the genome in the absence of RNAP, was primarily associated with promoter regions, and was highly correlated with the distribution of RNAP σA. The colocalization of σA and CarD led us to propose that in vivo, CarD associates with RNAP initiation complexes at most promoters and is therefore a global regulator of transcription initiation. Here we describe in detail the data from the ChIP-seq experiments associated with the study published by Srivastava and colleagues in the Proceedings of the National Academy of Science in 2013 [5] as well as discuss the findings from this dataset in relation to both CarD and mycobacterial transcription as a whole. The ChIP-seq data have been deposited in the Gene Expression Omnibus (GEO) database, www.ncbi.nlm.nih.gov/geo (accession no. GSE48164). |
| Keywords: | controlled study; unclassified drug; promoter region; sequence analysis; nonhuman; transcription initiation; genetic transcription; high throughput screening; bacterial strain; gene mapping; bacterial protein; mycobacterium tuberculosis; transcription regulation; chromatin immunoprecipitation; nucleotide sequence; escherichia coli; transcription; corynebacterineae; protein cross linking; genomic dna; tuberculosis; mycobacterium smegmatis; rna polymerase; protein nucleic acid interaction; card; mycobacteria; protein card; rna polymerase beta subunit; article; sigma factor rpon |
| Journal Title: | Genomics Data |
| Volume: | 2 |
| ISSN: | 2213-5960 |
| Publisher: | Elsevier Inc. |
| Date Published: | 2014-12-01 |
| Start Page: | 110 |
| End Page: | 113 |
| Language: | English |
| DOI: | 10.1016/j.gdata.2014.05.012 |
| PROVIDER: | scopus |
| PMCID: | PMC4115788 |
| PUBMED: | 25089258 |
| DOI/URL: | |
| Notes: | Export Date: 2 February 2015 -- Source: Scopus |
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