σ54-dependent regulome in Desulfovibrio vulgaris Hildenborough
© 2015 Kazakov et al. Background: The σ 54 subunit controls a unique class of promoters in bacteria. Such promoters, without exception, require enhancer binding proteins (EBPs) for transcription initiation. Desulfovibrio vulgaris Hildenborough, a model bacterium for sulfate reduction studies, has a high number of EBPs, more than most sequenced bacteria. The cellular processes regulated by many of these EBPs remain unknown. Results: To characterize the σ 54 -dependent regulome of D. vulgaris Hildenborough, we identified EBP binding motifs and regulated genes by a combination of computational and experimental techniques. These predictions were supported by our reconstruction of σ 54 -dependent promoters by comparative genomics. We reassessed and refined the results of earlier studies on regulation in D. vulgaris Hildenborough and consolidated them with our new findings. It allowed us to reconstruct the σ 54 regulome in D. vulgaris Hildenborough. This regulome includes 36 regulons that consist of 201 coding genes and 4 non-coding RNAs, and is involved in nitrogen, carbon and energy metabolism, regulation, transmembrane transport and various extracellular functions. To the best of our knowledge, this is the first report of direct regulation of alanine dehydrogenase, pyruvate metabolism genes and type III secretion system by σ 54 -dependent regulators. Conclusions: The σ 54 -dependent regulome is an important component of transcriptional regulatory network in D. vulgaris Hildenborough and related free-living Deltaproteobacteria. Our study provides a representative collection of σ 54 -dependent regulons that can be used for regulation prediction in Deltaproteobacteria and other taxa.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Biological and Environmental Research (BER)
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1618540
- Alternate ID(s):
- OSTI ID: 1256485; OSTI ID: 1378639
- Journal Information:
- BMC Genomics, Journal Name: BMC Genomics Vol. 16 Journal Issue: 1; ISSN 1471-2164
- Publisher:
- Springer Science + Business MediaCopyright Statement
- Country of Publication:
- United Kingdom
- Language:
- English
Web of Science
σ 54 ‐Dependent regulator DVU2956 switches Desulfovibrio vulgaris from biofilm formation to planktonic growth and regulates hydrogen sulfide production
|
journal | May 2019 |
Genome-Guided Identification of Organohalide-Respiring Deltaproteobacteria from the Marine Environment
|
journal | December 2018 |
Similar Records
Global Analysis of Heat Shock Response in Desulfovibrio vulgaris Hildenborough.
Transcriptional Response of Desulfovibrio vulgaris Hildenborough to Oxidative Stress Mimicking Environmental Conditions