期刊
NATURE
卷 464, 期 7286, 页码 250-255出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/nature08756
关键词
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资金
- NGFN, BMBF, Germany
- DFG [SPP1258]
- Regulatory RNAs in Prokaryotes [VO8751/2, VO8751/4, STA850/7-1]
- University of Leipzig
- Freistaat Sachsen
- German Research Foundation IZBI [BIZ6/1-4]
- Volkswagen Stiftung [I/82 720]
- French Agence Nationale de la Recherche [ANR-07-JCJC-0104-01]
- French Association de la Recherche contre le Cancer (ARC)
- La Ligue Nationale contre le Cancer (LNCC)
- Agence Nationale de la Recherche (ANR) [ANR-07-JCJC-0104] Funding Source: Agence Nationale de la Recherche (ANR)
Genome sequencing of Helicobacter pylori has revealed the potential proteins and genetic diversity of this prevalent human pathogen, yet little is known about its transcriptional organization and noncoding RNA output. Massively parallel cDNA sequencing (RNA-seq) has been revolutionizing global transcriptomic analysis. Here, using a novel differential approach (dRNA-seq) selective for the 5' end of primary transcripts, we present a genome-wide map of H. pylori transcriptional start sites and operons. We discovered hundreds of transcriptional start sites within operons, and opposite to annotated genes, indicating that complexity of gene expression from the small H. pylori genome is increased by uncoupling of polycistrons and by genome-wide antisense transcription. We also discovered an unexpected number of similar to 60 small RNAs including the e-subdivision counterpart of the regulatory 6S RNA and associated RNA products, and potential regulators of cis- and trans-encoded target messenger RNAs. Our approach establishes a paradigm for mapping and annotating the primary transcriptomes of many living species.
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