Using transcription factor binding site co-occurrence to predict regulatory regions
1Max Planck Institute for Molecular Genetics, Ihnestr. 63-73, D-14195 Berlin, Germany. holger.klein@molgen.mpg.de
Summary
This study introduces a method to find pairs of transcription factor binding sites that work together more often than expected. This helps assess the regulatory potential of DNA regions using co-occurrence scores.
Area of Science:
- Genomics
- Bioinformatics
- Molecular Biology
Background:
- Transcription factors (TFs) regulate gene expression by binding to specific DNA sequences.
- TF binding often occurs cooperatively, meaning multiple TFs bind in proximity to regulate genes.
Purpose of the Study:
- To develop and evaluate a method for detecting co-occurring transcription factor binding sites (TFBS) in regulatory regions.
- To quantify the significance of TFBS co-occurrence beyond random chance.
- To utilize co-occurrence data for assessing the regulatory potential of DNA sequences.
Main Methods:
- Developed a computational method to identify pairs of TFBS that co-occur more frequently than expected by chance in known regulatory regions.
- Evaluated the method's performance using established TF interaction databases.
- Introduced a graph-based scoring system to quantify the regulatory potential of a DNA region based on TF pair co-occurrence.
Main Results:
- Identified frequently co-occurring TF pairs within known regulatory DNA sequences.
- Demonstrated the method's ability to distinguish significant co-occurrences from random associations.
- Showcased the application of the graph-based score for evaluating the regulatory potential of specific genomic regions.
Conclusions:
- The developed method effectively detects significant co-occurring TF pairs, providing insights into gene regulation mechanisms.
- Co-occurrence analysis of TFBS can serve as a valuable metric for predicting the regulatory potential of DNA sequences.
- This approach enhances our understanding of combinatorial gene regulation and TF cooperation.
Related Concept Videos
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Transcriptional regulators bind to specific cis-regulatory sequences in the DNA to regulate gene transcription. These cis-regulatory sequences are very short, usually less than ten nucleotide pairs in length. The short length means that there is a high probability of the exact same sequence randomly occurring throughout the genome. Since regulators can also bind to groups of similar sequences, this further increases the chances of random binding. Transcriptional regulators form dimers that...
02:13Cooperative Binding of Transcription Regulators
Transcriptional regulators bind to specific cis-regulatory sequences in the DNA to regulate gene transcription. These cis-regulatory sequences are very short, usually less than ten nucleotide pairs in length. The short length means that there is a high probability of the exact same sequence randomly occurring throughout the genome. Since regulators can also bind to groups of similar sequences, this further increases the chances of random binding. Transcriptional regulators form dimers that...
02:02Cis-regulatory Sequences
Cis-regulatory sequences are short fragments of non-coding DNA that are present on the same chromosomes as the genes that they regulate. These fragments serve as binding sites for transcriptional regulators, proteins that are responsible for controlling gene transcription and differential gene expression across cell types in eukaryotes. Cis-regulatory sequences can be close to the gene of interest or thousands of bases away in the DNA sequence; however, those sequences that are further away are...
02:02Cis-regulatory Sequences
Cis-regulatory sequences are short fragments of non-coding DNA that are present on the same chromosomes as the genes that they regulate. These fragments serve as binding sites for transcriptional regulators, proteins that are responsible for controlling gene transcription and differential gene expression across cell types in eukaryotes. Cis-regulatory sequences can be close to the gene of interest or thousands of bases away in the DNA sequence; however, those sequences that are further away are...
02:04Co-activators and Co-repressors
Gene transcription is regulated by the synergistic action of several proteins that form a complex at a gene regulatory site. This is observed in eukaryotes, where the regulation of gene expression is a complex process. Regulatory proteins in eukaryotes can broadly be classified into two types – regulators that bind directly to specific DNA sequences and co-regulators that associate with regulatory proteins but cannot directly bind to the DNA. These co-regulators are further divided into...
02:04Co-activators and Co-repressors
Gene transcription is regulated by the synergistic action of several proteins that form a complex at a gene regulatory site. This is observed in eukaryotes, where the regulation of gene expression is a complex process. Regulatory proteins in eukaryotes can broadly be classified into two types – regulators that bind directly to specific DNA sequences and co-regulators that associate with regulatory proteins but cannot directly bind to the DNA. These co-regulators are further divided into...