Chemical Degradation
Chemical Degradation - Related Videos
02:58
Regulated Protein Degradation
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2020
It is vital to regulate the activity of enzymatic as well as non-enzymatic proteins inside the cell. This can be achieved either through creating a balance between their rate of synthesis and degradation or regulating the intrinsic activity of the protein. Both these regulation mechanisms play an essential role in the normal functioning of cells. Protein degradation plays two important roles in the cells. It helps to protect cells from misfolded or damaged proteins before they lead to a...
02:11
Proteins: From Genes to Degradation
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2020
Within a biological system, the DNA encodes the RNA, and the nucleotide sequence in the RNA further defines the amino acid sequence in the protein. This is referred to as “The Central Dogma of Molecular Biology” - a term coined by Francis Crick. Central dogma is a firm principle in biology that defines the flow of genetic information within any life form. The two fundamental steps in central dogma are - transcription and translation. Transcription is the synthesis of RNA molecules by RNA...
07:43
Assaying Proteasomal Degradation in a Cell-free System in Plants
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Cited by 26 •
2014
Targeted protein degradation represents a major regulatory mechanism for cell function. It occurs via a conserved ubiquitin-proteasome pathway, which attaches polyubiquitin chains to the target protein that then serve as molecular “tags” for the 26S proteasome. Here, we describe a simple and reliable cell-free assay for proteasomal degradation of proteins.
10:56
Assays for the Degradation of Misfolded Proteins in Cells
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Cited by 5 •
2016
This report describes protocols for measuring degradation rates of misfolded proteins by either western blot or fluorescence-based assays. The methods can be applied to analysis of other misfolded proteins and for high throughput screening.
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).
FAQs
Hydrolysis, oxidation, reduction, and photolysis create different degradation pathways because they respond to different environmental triggers. Hydrolysis is linked to environmental water, whereas oxidation, reduction, and photolysis reflect chemical or light-driven changes. Distinguishing the pathway helps researchers connect a detected degradation product to the conditions that produced it and select appropriate stability controls.
pH, temperature, moisture, oxygen, and light are not merely storage details; they can change the rate at which a drug degrades. A stability study therefore examines how altering these conditions changes the chemical profile over time. The resulting pattern helps identify which environmental variables require tighter control during formulation, packaging, storage, and use.
Degradation products matter because the original drug may no longer retain the same identity, potency, safety, or stability after chemical change. Their detection allows investigators to determine whether a formulation remains suitable and whether the product can retain its intended therapeutic properties. This connects chemical analysis directly to pharmacological quality decisions.
Chemical degradation studies provide more than a list of altered compounds. They can reveal the degradation pathway, show how environmental conditions affect reaction rate, and identify products formed during chemical change. Researchers use those findings to estimate shelf life, adjust formulations or packaging, and establish storage conditions that help preserve the drug’s intended properties.
Degradation data show which environmental conditions threaten a medicine’s chemical stability and help researchers determine how to protect it. Formulation changes can be evaluated alongside packaging choices, while storage requirements can be set according to observed sensitivity to pH, temperature, moisture, oxygen, or light. These decisions support retention of intended therapeutic properties.
During manufacturing and use, degradation data support quality control by showing whether a medicine continues to meet expectations for identity, potency, safety, and stability. Investigators can use the findings to establish handling and storage requirements, monitor degradation products, and judge whether therapeutic properties are retained. This provides a scientific basis for consistent medicine quality.