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A system-level model for the microbial regulatory genome

Journal Article · · Molecular Systems Biology
 [1];  [2];  [3];  [2];  [4];  [2];  [2];  [2];  [2];  [5]
  1. Inst. for Systems Biology, Seattle, WA (United States); Univ. of Washington, Seattle, WA (United States). Molecular and Cellular Biology Program; DOE/OSTI
  2. Inst. for Systems Biology, Seattle, WA (United States)
  3. Université Laval, Québec, QC (Canada). Département de Physique de Génie Physique et d'Optique
  4. Inst. for Systems Biology, Seattle, WA (United States); Univ. of Sao Paulo, Ribeirao Preto (Brazil). LabPIB. Dept. of Computing and Mathematics FFCLRP‐USP
  5. Inst. for Systems Biology, Seattle, WA (United States); Univ. of Washington, Seattle, WA (United States). Molecular and Cellular Biology Program; Univ. of Washington, Seattle, WA (United States). Depts. of Microbiology and Biology; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Microbes can tailor transcriptional responses to diverse environmental challenges despite having streamlined genomes and a limited number of regulators. Here, we present data-driven models that capture the dynamic interplay of the environment and genome-encoded regulatory programs of two types of prokaryotes: Escherichia coli (a bacterium) and Halobacterium salinarum (an archaeon). The models reveal how the genome-wide distributions of cis-acting gene regulatory elements and the conditional influences of transcription factors at each of those elements encode programs for eliciting a wide array of environment-specific responses. We demonstrate how these programs partition transcriptional regulation of genes within regulons and operons to re-organize gene–gene functional associations in each environment. The models capture fitness-relevant co-regulation by different transcriptional control mechanisms acting across the entire genome, to define a generalized, system-level organizing principle for prokaryotic gene regulatory networks that goes well beyond existing paradigms of gene regulation. An online resource (http:// egrin2.systemsbiology.net) has been developed to facilitate multiscale exploration of conditional gene regulation in the two prokaryotes.
Research Organization:
Institute for Systems Biology, Seattle, WA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Oak Ridge Associated Univ., Oak Ridge, TN (United States); Univ. of Washington, Seattle, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER). Biological Systems Science Division
Grant/Contract Number:
AC02-05CH11231; AC05-06OR23100; FG02-07ER64327; FG02-08ER64685
OSTI ID:
1627935
Journal Information:
Molecular Systems Biology, Journal Name: Molecular Systems Biology Journal Issue: 7 Vol. 10; ISSN 1744-4292
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (17)

Sense overlapping transcripts in IS1341-type transposase genes are functional non-coding RNAs in archaea journal March 2015
Internal RNAs overlapping coding sequences can drive the production of alternative proteins in archaea journal September 2018
cMonkey 2 : Automated, systematic, integrated detection of co-regulated gene modules for any organism journal April 2015
A transcription network of interlocking positive feedback loops maintains intracellular iron balance in archaea journal August 2017
CMIP: a software package capable of reconstructing genome-wide regulatory networks using gene expression data journal December 2016
Transcriptional program for nitrogen starvation-induced lipid accumulation in Chlamydomonas reinhardtii journal December 2015
Development of New Modular Genetic Tools for Engineering the Halophilic Archaeon Halobacterium salinarum journal June 2015
An experimentally supported model of the Bacillus subtilis global transcriptional regulatory network journal November 2015
Data-driven integration of genome-scale regulatory and metabolic network models journal May 2015
Genome-Wide Mapping of Transcriptional Regulation and Metabolism Describes Information-Processing Units in Escherichia coli journal August 2017
Conserved principles of transcriptional networks controlling metabolic flexibility in archaea journal December 2018
Global transcriptional regulatory network for Escherichia coli robustly connects gene expression to transcription factor activities journal September 2017
Comparative Genomics of DtxR Family Regulons for Metal Homeostasis in Archaea journal November 2014
Systematic Discovery of Archaeal Transcription Factor Functions in Regulatory Networks through Quantitative Phenotyping Analysis journal September 2017
Conserved Units of Co-Expression in Bacterial Genomes: An Evolutionary Insight into Transcriptional Regulation journal May 2016
Characterization of the transcriptome of Haloferax volcanii, grown under four different conditions, with mixed RNA-Seq journal April 2019
The Primary Antisense Transcriptome of Halobacterium salinarum NRC-1 journal April 2019

Figures / Tables (7)


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