Related Experiment Video
Updated: Jun 16, 2026
06:53
In Vivo Monitoring of Transcriptional Activity During Metabolic Transition Using a Bioluminescent Reporter in Yeast
Published on: February 21, 2025
Yeast molecular genetic tricks to study gene regulation
1Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Harvard University, Boston, MA 02115, USA.
Genetics
|March 28, 2025
Summary
Kevin Struhl received the Edward Novitski Prize for groundbreaking genetics research. His work includes cloning eukaryotic genes in E. coli and understanding gene regulation mechanisms.
Area of Science:
- Genetics
- Molecular Biology
- Gene Regulation
Background:
- The Edward Novitski Prize recognizes exceptional creativity and ingenuity in genetics research.
- Kevin Struhl's career is marked by significant contributions to understanding gene function and regulation.
Purpose of the Study:
- To acknowledge Kevin Struhl's pioneering work in cloning eukaryotic genes.
- To highlight his research on gene promoter and regulatory regions.
- To recognize his discoveries in transcriptional activation, repression, and initiation.
Main Methods:
- Cloning a functional eukaryotic gene in E. coli.
- Utilizing random DNA and amino acid sequences to determine specificity.
- Identifying DNA sequences and protein interactions critical for gene regulation.
- Investigating the role of nucleosome-free regions in transcription.
Main Results:
- Successful cloning of a functional eukaryotic gene in E. coli.
- Definition of gene promoter and regulatory elements.
- Elucidation of sequences and protein interactions governing transcriptional control.
- Demonstration of nucleosome-free regions' importance for transcription initiation.
Conclusions:
- Struhl's research has fundamentally advanced the understanding of gene cloning and regulation.
- His work provides critical insights into the molecular mechanisms of gene expression.
- The discoveries have broad implications for genetics and molecular biology research.
Related Concept Videos
01:22Bioreactor Controls-III
Strain improvement is a foundational strategy in industrial microbiology aimed at maximizing microbial productivity, particularly because natural isolates typically yield commercially valuable products in very low concentrations. Although optimizing the culture medium and environmental conditions can improve yields, these adjustments are inherently limited by the organism’s genetic potential. As a result, the focus shifts toward genetic modifications to enhance biosynthetic capacity. The...
01:23Transcriptional Regulation: Riboswitches
Riboswitches are RNA elements that regulate gene expression by altering their secondary structures in response to specific effector molecules. These elements, located in the leader regions of certain mRNAs, act as transcriptional regulators by toggling between alternative conformations to control downstream gene expression. Riboswitch-mediated regulation is a precise mechanism for modulating biosynthetic pathways, as exemplified by the riboflavin biosynthesis pathway in Bacillus...
01:17Gene Regulation During Sporulation
Sporulation is a complex developmental process that allows certain Gram-positive bacteria, such as Bacillus subtilis and Clostridium species, to survive extreme environmental conditions. This process is tightly regulated by a series of signaling cascades and transcriptional controls, ensuring the formation of a highly resistant endospore.Sporulation is triggered by unfavorable conditions, such as nutrient depletion, and is governed by a phosphorelay system. One of the sensor kinases, such as...
01:28Yeast Signaling
Yeasts are single-celled organisms, but unlike bacteria, they are eukaryotes (cells with a nucleus). Cell signaling in yeast is similar to signaling in other eukaryotic cells. A ligand, such as a protein or a small molecule released from a yeast cell, attaches to a receptor on the cell surface. The binding stimulates second-messenger kinases to activate or inactivate transcription factors that further regulate gene expression. Many of the yeast intracellular signaling cascades have similar...
02:11Reporter Genes
Reporter genes are a type of protein-coding gene that are often tagged to a gene of interest. Once inside a target cell, reporter genes usually produce visually identifiable characteristics like fluorescence and luminescence when expressed along with the gene of interest. Thus, reporter genes “report” the presence or absence of genes of interest in an organism, determine the gene expression pattern, or track the physical location of a DNA segment or protein in the cell.
Commonly used reporter...
Commonly used reporter...
01:23Regulation of Expression at Multiple Steps
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 addition of a...