Related Experiment Video
Updated: Jun 12, 2025
11:36
Author Spotlight: An Integrated Workflow to Study the Promoter-Centric Spatio-Temporal Genome Architecture in Scarce Cell Populations
Published on: April 21, 2023
2.0K
Transcription regulation through selective partitioning: Weak interactions with a strong foundation
Megan Palacio1, Dylan J Taatjes1
1Department of Biochemistry, University of Colorado, Boulder, CO 80303, USA.
Molecular Cell
|September 20, 2024
Summary
Researchers explored how protein interactions regulate RNA polymerase II (RNA Pol II) function. They identified specific sequence features driving this selective protein partitioning within cells.
Area of Science:
- Molecular biology
- Cellular regulation
- Biochemistry
Background:
- RNA polymerase II (RNA Pol II) is crucial for gene transcription.
- Protein interactions and partitioning influence cellular processes.
- Intrinsically disordered regions (IDRs) mediate low-affinity interactions.
Purpose of the Study:
- To investigate the role of selective protein partitioning in regulating RNA Pol II function.
- To identify sequence features governing IDR-dependent protein partitioning.
- To understand how these interactions impact cellular processes.
Main Methods:
- Utilized advanced cellular imaging techniques.
- Employed biochemical assays to study protein-protein interactions.
- Performed sequence analysis to identify key features driving partitioning.
Main Results:
- Demonstrated that low-affinity IDR-dependent interactions drive selective protein partitioning.
- Showed that specific sequence features dictate the partitioning of proteins.
- Established a link between protein partitioning and RNA Pol II regulation.
Conclusions:
- Selective protein partitioning via IDR-dependent interactions is a key regulatory mechanism for RNA Pol II.
- Sequence features play a critical role in directing protein localization and function.
- This study provides insights into the molecular basis of cellular regulation.
More Related Videos
07:23Describing a Transcription Factor Dependent Regulation of the MicroRNA Transcriptome
Published on: June 15, 2016
8.4K
12:54Real-time Analysis of Transcription Factor Binding, Transcription, Translation, and Turnover to Display Global Events During Cellular Activation
Published on: March 7, 2018
13.5K
Related Concept Videos
01:23Regulation of Expression at Multiple Steps
875
The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the...
875
02:13Cooperative Binding of Transcription Regulators
6.4K
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...
6.4K
02:24Regulation of Expression Occurs at Multiple Steps
22.5K
Gene expression can be regulated at almost every step from gene to protein. Transcription is the step that is most commonly regulated. This involves the binding of proteins to short regulatory sequences on the DNA. This association can either promote or inhibit the transcription of a gene associated with the respective sequence.
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
Transcription results in the generation of precursor (pre-mRNA) that consists of both exons and introns, which needs further processing before being translated to a...
22.5K
02:42Transcription Attenuation in Prokaryotes
15.2K
Transcriptional attenuation occurs when RNA transcription is prematurely terminated due to the formation of a terminator mRNA hairpin structure. Bacteria use these hairpins to regulate the transcription process and control the synthesis of several amino acids including histidine, lysine, threonine, and phenylalanine. Transcription attenuation takes place in the non-coding regions of mRNA.
There are several different mechanisms used to attenuate transcription. In ribosome mediated...
There are several different mechanisms used to attenuate transcription. In ribosome mediated...
15.2K
02:36RNA Polymerase II Accessory Proteins
9.1K
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...
9.1K
02:02Cis-regulatory Sequences
9.8K
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...
9.8K