Dataset Information
Dynamic usage of transcription start sites within core promoters.
Ontology highlight
ABSTRACT: Background
Mammalian promoters do not initiate transcription at single, well defined base pairs, but rather at multiple, alternative start sites spread across a region. We previously characterized the static structures of transcription start site usage within promoters at the base pair level, based on large-scale sequencing of transcript 5' ends.Results
In the present study we begin to explore the internal dynamics of mammalian promoters, and demonstrate that start site selection within many mouse core promoters varies among tissues. We also show that this dynamic usage of start sites is associated with CpG islands, broad and multimodal promoter structures, and imprinting.Conclusion
Our results reveal a new level of biologic complexity within promoters--fine-scale regulation of transcription starting events at the base pair level. These events are likely to be related to epigenetic transcriptional regulation.
SUBMITTER: Kawaji H
PROVIDER: S-EPMC1794431 | biostudies-literature | 2006
REPOSITORIES: biostudies-literature
Publications
Dynamic usage of transcription start sites within core promoters.
Genome biology 20060101 12
<h4>Background</h4>Mammalian promoters do not initiate transcription at single, well defined base pairs, but rather at multiple, alternative start sites spread across a region. We previously characterized the static structures of transcription start site usage within promoters at the base pair level, based on large-scale sequencing of transcript 5' ends.<h4>Results</h4>In the present study we begin to explore the internal dynamics of mammalian promoters, and demonstrate that start site selection ...[more]