Related Experiment Video
Updated: Jun 5, 2026
09:22
Budding Yeast Protein Extraction and Purification for the Study of Function, Interactions, and Post-translational Modifications
Published on: October 30, 2013
Seeking resolution: budding yeast enzymes finally make the cut
1Department of Molecular Genetics and Microbiology, Duke University Medical Center, Durham, NC 27710, USA. sue.robertson@duke.edu
Molecular Cell
|December 22, 2010
Summary
Holliday junction resolution by Mus81-Mms4 and Yen1 is crucial for maintaining genome stability during cell division. Impaired resolution of these DNA structures can lead to significant genomic instability.
Area of Science:
- Molecular Biology
- Genetics
- Biochemistry
Background:
- Holliday junctions are critical DNA structures formed during homologous recombination.
- Proper resolution of Holliday junctions is essential for accurate chromosome segregation.
Discussion:
- The study identifies Mus81-Mms4 and Yen1 as key structure-specific endonucleases responsible for Holliday junction resolution.
- Failure in Holliday junction cleavage by these enzymes has severe consequences for mitotic genome stability.
Key Insights:
- Mus81-Mms4 and Yen1 are the primary enzymes that cleave Holliday junctions.
- Defects in these nucleases compromise the integrity of the genome during mitosis.
Outlook:
- Further research into Mus81-Mms4 and Yen1 function can elucidate mechanisms of genome maintenance.
- Understanding these pathways may offer insights into preventing diseases associated with genomic instability.
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...
01:28Yeast 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...
01:27Production of Alcohol
Continuous fermentation is a key strategy in industrial ethanol production, particularly when efficiency, scalability, and high yields are essential. This approach allows for uninterrupted operation and optimized resource utilization. The primary feedstock, corn starch, undergoes enzymatic hydrolysis facilitated by α-amylase and glucoamylase. These enzymes break down the starch into fermentable sugars such as glucose, which are readily assimilated by fermentative microorganisms.Fermentation...