Degradation Kinetics Analysis
Degradation Kinetics Analysis - Related Videos
09:05
Cycloheximide Chase Analysis of Protein Degradation in Saccharomyces cerevisiae
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Cited by 70 •
2016
Protein abundance reflects the rates of both protein synthesis and protein degradation. This article describes the use of cycloheximide chase followed by western blotting to analyze protein degradation in the model unicellular eukaryote, Saccharomyces cerevisiae (budding yeast).
02:59
Fluorescence Microplate-Based Cycloheximide Chase Assay: A Technique to Monitor the Degradation Kinetics of Fluorescent Nuclear Misfolded Proteins
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2025
This video describes an in vitro fluorescence-based microplate assay to study the degradation kinetics of a fluorescently-labeled misfolded luciferase mutant protein expressed in the nuclei of transfected mammalian cells. The assay involves the treatment of cells expressing the fluorescent mutant protein with a translation inhibitor and a proteasome inhibitor to assess the proteasome-mediated degradation of the misfolded protein.
19:16
The Importance of Correct Protein Concentration for Kinetics and Affinity Determination in Structure-function Analysis
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Cited by 26 •
2010
We apply label-free protein interaction analysis using Biacore X100 for structure-function analysis of the binding of several cystatin B mutants to papain through kinetic characterization. Calibration-free concentration analysis (CFCA) measures the concentration of protein with retained binding activity without the need for a standard curve. We show that confirmation of concentrations using CFCA increases the reliability of the kinetic analysis and that kinetic constants can reliably be...
11:32
Analysis of mRNA Nuclear Export Kinetics in Mammalian Cells by Microinjection
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Cited by 31 •
2010
Here we describe an assay that employs the power of microinjection coupled with fluorescent in situ hybridization in order to accurately measure the nuclear export kinetics of mRNA in mammalian somatic cells.
08:07
Enzyme Assays and Kinetics
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2023
Enzyme kinetics describes the catalytic effects of enzymes, which are biomolecules that facilitate chemical reactions necessary for living organisms. Enzymes act on molecules, referred to as substrates, to form products. Enzyme kinetic parameters are determined via assays that directly or indirectly measure changes in substrate or product concentration over time. This video will cover the basic principles of enzyme kinetics (including rate equations) and kinetic models. The concepts governing...
FAQs
These models describe different relationships between degradation and time or temperature. A zero-order model treats the change rate as constant, whereas a first-order model relates the rate to the amount or concentration remaining. Temperature-dependent relationships show how changing temperature alters the rate. Comparing model fit with measured data helps identify the relationship most useful for predicting material or system behavior.
Temperature, moisture, oxygen, pH, mechanical stress, and radiation can each influence how quickly performance declines or a chemical system decomposes. Their effects may also indicate which degradation mechanism dominates under a particular condition. Evaluating these factors separately or in relevant combinations allows engineers to connect observed changes with service environments rather than treating degradation as a single, fixed-rate process.
The most informative measurement depends on the system being studied. A performance property can reveal when a component or material no longer meets its intended function, while concentration changes can directly describe decomposition in a chemical system. Relating either measurement to time provides evidence for kinetic modeling and helps connect laboratory observations with practical service-life or reliability decisions.
The analysis begins by selecting a measurable property or concentration and exposing the material or system to controlled conditions. Measurements are collected over time, with relevant variables such as temperature, moisture, oxygen, pH, stress, or radiation identified. The time-dependent data are then fitted to appropriate kinetic models, and the resulting rates are used to assess degradation behavior.
Researchers can vary influential conditions while monitoring the resulting change in performance or concentration. Differences in degradation rates under altered temperature, moisture, oxygen, pH, mechanical stress, or radiation provide comparative evidence about environmental sensitivity. This approach helps distinguish which factors are most important for a particular system and supports more targeted durability testing and engineering evaluation.
Engineers apply the analysis when selecting materials, evaluating durability, estimating service life, assessing reliability, planning maintenance, or designing safer and longer-lasting products and infrastructure. The calculated degradation rates provide a quantitative basis for comparing alternatives and anticipating performance loss. In this way, time-dependent test results can inform both initial design choices and decisions made during operation.