Related Experiment Video
Updated: Aug 7, 2026
12:54
Real-time Analysis of Transcription Factor Binding, Transcription, Translation, and Turnover to Display Global Events During Cellular Activation
Published on: March 7, 2018
Sequential recruitment and combinatorial assembling of multiprotein complexes in transcriptional activation
Vincent Lemaire1, Chiu Fan Lee, Jinzhi Lei
1Centre for Nonlinear Dynamics, McGill University, Canada. lemaire@cnd.mcgill.ca
Physical Review Letters
|June 29, 2006
Summary
Estrogen signals cause cyclical protein-DNA interactions to regulate gene transcription. A new model predicts robust binding sequences during these oscillations, applicable to other biological processes.
Area of Science:
- Molecular Biology
- Systems Biology
- Genetics
Background:
- Estrogenic signals regulate gene expression through cyclical protein-DNA interactions in human cells.
- Understanding these dynamic processes is crucial for deciphering gene regulation.
Purpose of the Study:
- To develop a model for predicting protein-DNA binding sequences during estrogen-induced oscillations.
- To apply this model to experimental data and identify robust binding patterns.
Main Methods:
- Modeling sequential reactions with linear kinetics and random rates.
- Applying the model to experimental data to predict protein-DNA association phases.
Main Results:
- The model successfully predicts robust protein-DNA binding sequences at various oscillation phases.
- Identified specific binding patterns crucial for estrogen-responsive gene activation.
Conclusions:
- The developed modeling approach effectively predicts dynamic protein-DNA interactions in gene regulation.
- This method is broadly applicable to other complex biological oscillations.
Related Concept Videos
02:33Combinatorial Gene Control
Combinatorial gene control is the synergistic action of several transcriptional factors to regulate the expression of a single gene. The absence of one or more of these factors may lead to a significant difference in the level of gene expression or repression.
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
02:36RNA Polymerase II Accessory Proteins
Proteins that regulate transcription can do so either via direct contact with RNA Polymerase or through indirect interactions facilitated by adaptors, mediators, histone-modifying proteins, and nucleosome remodelers. Direct interactions to activate transcription is seen in bacteria as well as in some eukaryotic genes. In these cases, upstream activation sequences are adjacent to the promoters, and the activator proteins interact directly with the transcriptional machinery. For example, in...
02:42Eukaryotic Transcription Activators
Transcription activators are proteins that promote the transcription of genes from DNA to RNA. In most cases, these proteins contain two separate domains ‒ a domain that binds to DNA and a domain for activating transcription; however, in some cases, a single domain is responsible for both binding and activation of transcription, as seen in the glucocorticoid receptor and MyoD.
The binding domains are capable of recognizing and interacting with regulatory sequences on the DNA. These domains are...
The binding domains are capable of recognizing and interacting with regulatory sequences on the DNA. These domains 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...
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...