Yeast Luminometric Assay
Yeast Luminometric Assay - Related Videos
05:20
Yeast Two-Hybrid Assay to Determine Protein Self-Association in Yeast Cells
0 Views •
2025
This video demonstrates the yeast two-hybrid assay to detect specific protein self-interactions. In this assay, the protein of interest is tagged to two domains of a transcription factor that encodes the β-galactosidase enzyme. When the two proteins interact, this causes transcription and translation to form the enzyme, which is then detected using a biochemical assay.
12:09
Yeast Luminometric and Xenopus Oocyte Electrophysiological Examinations of the Molecular Mechanosensitivity of TRPV4
0 Views •
Cited by 13 •
2013
To complement commonly used methods to study TRPV4’s, two methods are described: Its mechanosensitivity can be studied by Ca2+-aequorin luminometry in transgenic yeast upon hypo-osmotic challenge. It can also be examined in TRPV4-RNA injected Xenopus oocytes by whole-cell two-electrode voltage clamp or patch clamp in on-cell or excised mode.
09:06
Growth Assays to Assess Polyglutamine Toxicity in Yeast
0 Views •
Cited by 3 •
2012
This manuscript describes three complementary protocols for assessing the toxicity of polyglutamine (polyQ)-expansion proteins in the yeast Saccharomyces cerevisiae. These protocols can easily be modified to monitor the toxicity of other misfolded proteins in yeast.
10:27
A Fluorescence Microscopy Assay for Monitoring Mitophagy in the Yeast Saccharomyces cerevisiae
0 Views •
Cited by 26 •
2011
A robust approach to monitor the delivery of organelles to the acidic lumen of the yeast vacuole for degradation and recycling is described. The method relies on the specific labeling of target organelles with a genetically encoded dual-emission fluorescence pH-biosensor, and visualization of individual cells using fluorescence microscopy.
08:30
Yeast Maintenance
0 Views •
2023
Research performed in the yeast Saccharomyces cerevisiae has significantly improved our understanding of important cellular phenomona such as regulation of the cell cycle, aging, and cell death. The many benefits of working with S. cerevisiae include the facts that they are inexpensive to grow in the lab and that many ready-to-use strains are now commercially available. Nevertheless, proper maintenance of this organism is critical for successful experiments. This video will provide an overview...
FAQs
The assay links a yeast-cell process to photon production. In a reporter format, yeast express luciferase under a biologically relevant regulatory system; in another format, an ATP-dependent luminescent reaction produces light after substrate addition. A luminometer detects the emitted photons and reports relative light units, allowing researchers to compare biological activity numerically between samples.
Luciferase reporters connect light output to activity associated with gene expression or promoter regulation, whereas ATP-dependent reactions use cellular ATP availability as part of the luminescent signal. These formats therefore answer different biological questions. Selecting between them depends on whether the experiment focuses on regulatory activity, cellular viability, or another response represented by the chosen luminescent reaction.
Light is generated only when the appropriate substrate is added to the selected reporter or luminescent reaction. Consequently, the substrate and assay design determine which cellular event becomes detectable and how the signal should be interpreted. A numerical increase in relative light units is meaningful only in relation to the biological activity that the assay was designed to represent.
Microplate compatibility allows many yeast samples to be processed and measured in a common experimental format. Because the luminometer records light as numerical relative light units, researchers can make rapid quantitative comparisons across samples exposed to different biological, chemical, or environmental conditions. This supports efficient screening and comparison without changing the underlying light-detection principle.
A typical workflow uses yeast prepared to provide either a luciferase reporter or an ATP-dependent luminescent reaction. Researchers expose the samples to the condition being studied, add the appropriate substrate, and place the reactions or cultures in a luminometer. The instrument records relative light units, which are then compared across the experimental samples to assess the response.
The method is useful when researchers need a rapid numerical comparison of how yeast respond to a drug or environmental condition. Changes in luminescence can be used to examine cellular viability, stress responses, or regulated biological activity, depending on the assay format. Its sensitivity and microplate compatibility make it suitable for evaluating many conditions in parallel.
In molecular biology, reporter-based formats can indicate promoter activity or changes in gene expression. Other formats support measurements related to cellular viability or stress responses, while treatment experiments reveal responses to drugs and environmental conditions. The resulting relative light units provide quantitative comparisons that help characterize yeast biology and support biotechnology studies involving cellular activity.