Searching across hundreds of databases
The circadian clock of the cyanobacterium Synechococcus elongatus PCC 7942 drives oscillations in global mRNA abundances with 24-hr periodicity under constant light conditions. The circadian clock-regulated transcription factor RpaA controls the timing of circadian gene expression, but the mechanisms underlying this control are not well understood. Here, we show that four RpaA-dependent sigma factors-RpoD2, RpoD6, RpoD5, and SigF2-are sequentially activated downstream of active RpaA and are required for proper expression of circadian mRNAs. By measuring global gene expression in strains modified to individually lack rpoD2, rpoD6, rpoD5, and sigF2, we identify how expression of circadian mRNAs, including sigma factor mRNAs, is altered in the absence of each sigma factor. Broadly, our findings suggest that a single transcription factor, RpaA, is sufficient to generate complex circadian expression patterns in part by regulating an interdependent sigma factor cascade.
Pubmed ID: 30540929 RIS Download
Publication data is provided by the National Library of Medicine ® and PubMed ®. Data is retrieved from PubMed ® on a weekly schedule. For terms and conditions see the National Library of Medicine Terms and Conditions.
Non-profit plasmid repository dedicated to helping scientists around the world share high-quality plasmids. Facilitates archiving and distributing DNA-based research reagents and associated data to scientists worldwide. Repository contains over 65,000 plasmids, including special collections on CRISPR, fluorescent proteins, and ready-to-use viral preparations. There is no cost for scientists to deposit plasmids, which saves time and money associated with shipping plasmids themselves. All plasmids are fully sequenced for validation and sequencing data is openly available. We handle the appropriate Material Transfer Agreements (MTA) with institutions, facilitating open exchange and offering intellectual property and liability protection for depositing scientists. Furthermore, we curate free educational resources for the scientific community including a blog, eBooks, video protocols, and detailed molecular biology resources.
View all literature mentionsA software program for identifying and ranking peak regions in ChIP-Seq experiments. It takes as input, mapped reads from a ChIP-Seq experiment, mapped reads from a control experiment and outputs a file with peak regions ranked with increasing Q-values.
View all literature mentionsThis monoclonal targets FLAG
View all literature mentionsSoftware ultrafast memory efficient tool for aligning sequencing reads. Bowtie is short read aligner.
View all literature mentionsCyanoBase provides an easy way of accessing the sequences and all-inclusive annotation data on the structures of the cyanobacterial genomes. Users can view by data type, search using BLAST2, or search by species.
View all literature mentionsSoftware ultrafast memory efficient tool for aligning sequencing reads. Bowtie is short read aligner.
View all literature mentionsCyanoBase provides an easy way of accessing the sequences and all-inclusive annotation data on the structures of the cyanobacterial genomes. Users can view by data type, search using BLAST2, or search by species.
View all literature mentionsThis monoclonal targets FLAG
View all literature mentionsThe SciCrunch Infrastructure was developed as a cooperative data platform to be used by diverse communities in making data more FAIR.
scicrunch.org
