Related Experiment Video
Updated: Jun 28, 2025

DNA-affinity-purified Chip DAP-chip Method to Determine Gene Targets for Bacterial Two component Regulatory Systems
Published on: July 21, 2014
A comprehensive analysis of pneumococcal two-component system regulatory networks
Jens Sivkær Pettersen1, Flemming Damgaard Nielsen1,2, Patrick Rosendahl Andreassen3
1Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark.
This study maps bacterial two-component systems in Streptococcus pneumoniae, revealing key regulatory networks. Novel bioinformatics identified and validated genes controlled by these systems, aiding understanding of pneumococcal pathogenicity.
Area of Science:
- Microbiology
- Bacterial Pathogenesis
- Bioinformatics
Background:
- Two-component systems are crucial for bacterial signal transduction and environmental response.
- Streptococcus pneumoniae possesses 13 two-component systems vital for its pathogenicity.
- Understanding pneumococcal regulatory networks is essential for host adaptation insights.
Purpose of the Study:
- To map the regulatory networks governed by two-component systems in Streptococcus pneumoniae.
- To identify novel genes and regulatory elements controlled by these systems.
- To demonstrate the utility of pangenome-wide association studies (panGWAS) in gene identification.
Main Methods:
- A novel bioinformatic approach using whole-genome sequencing data.
- Pangenome-wide association studies (panGWAS) to predict genotype-genotype associations.
- Next-generation RNA-sequencing for validation of predicted regulon genes.
Main Results:
- Predicted regulon genes for 11 of the 13 pneumococcal two-component systems.
- Validated candidate genes using RNA-sequencing.
- Identified novel response regulator binding motifs and small non-coding RNAs.
Conclusions:
- Established a novel bioinformatic method for predicting two-component system regulons.
- Expanded knowledge of pneumococcal two-component system regulation and function.
- Highlighted the potential of panGWAS for identifying bacterial virulence factors and drug targets.
More Related Videos
11:32Following in Real Time the Impact of Pneumococcal Virulence Factors in an Acute Mouse Pneumonia Model Using Bioluminescent Bacteria
Published on: February 23, 2014
10:18A Fast and Reliable Pipeline for Bacterial Transcriptome Analysis Case study: Serine-dependent Gene Regulation in Streptococcus pneumoniae
Published on: April 25, 2015
Related Concept Videos
Covalently Linked Protein Regulators
These groups modify specific amino acids in a protein....
Bacterial Signaling
Prokaryotic Transcriptional Activators and Repressors
Transcription of prokaryotic...
Interactions Between Signaling Pathways
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
cAMP-dependent Protein Kinase Pathways
Regulation of the Unfolded Protein Response