Methyl Radical
Methyl Radical - Related Videos
14:22
Free Radicals in Chemical Biology: from Chemical Behavior to Biomarker Development
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Cited by 9 •
2013
Radical-based biomimetic chemistry has been applied to building-up libraries necessary for biomarker development.
08:47
DNA Methylation Analysis
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2023
Methylation at CpG dinucleotides is a chemical modification of DNA hypothesized to play important roles in regulating gene expression. In particular, the methylation of clusters of methylation sites, called “CpG islands”, near promoters and other gene regulatory elements may contribute to the stable silencing of genes, for example, during epigenetic processes such as genomic imprinting and X-chromosome inactivation. At the same time, aberrant CpG methylation has been shown to be associated with...
21:24
Methylated DNA Immunoprecipitation
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Cited by 43 •
2009
This video demonstrates the protocol for methylated DNA immunoprecipitation (MeDIP). MeDIP is a two day procedure that selectively extracts methylated DNA fragments from a genomic DNA sample using antibodies with specificity for 5 -methylcytosine (anti-5 mC).
10:29
Photochemical Initiation Of Radical Polymerization Reactions
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2023
Source: David C. Powers, Tamara M. Powers, Texas A&M In this video, we will carry out the photochemically initiated polymerization of styrene to generate polystyrene, which is an important commodity plastic. We will learn the fundamentals of photochemistry and use simple photochemistry to initiate radical polymerization reactions. Specifically, in this module we will examine the photochemistry of benzoyl peroxide and its role as a photo-initiator of styrene polymerization reactions. In the...
12:34
DNA Methylation: Bisulphite Modification and Analysis
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Cited by 75 •
2011
The gold standard for DNA methylation analysis is genomic sequencing of bisulphite converted DNA. This method takes advantage of the increased sensitivity of cytosine compared with 5-methylcytosine (5-MeC) to bisulphite deamination under acidic conditions. Unmethylated cytosines can be distinguished from methylated cytosines after PCR amplification of the target genomic DNA.
FAQs
An unpaired electron makes the methyl radical prone to rapid reactions because it can seek a more stable electron arrangement. That electronic feature supports hydrogen abstraction, addition to other species, and combination with another radical. Its electrical neutrality distinguishes its behavior from charged intermediates, while its reactivity explains why it functions as a short-lived link in radical reaction sequences.
The key formation step is homolytic cleavage, in which a bond breaks so that its bonding electrons separate between the fragments. For methane or another methyl-containing compound, breaking a carbon-hydrogen or carbon-carbon bond can generate •CH3. Heat, light, or radical reactions can promote this step, so the radical may appear under chemically energetic conditions.
Once formed, methyl radical chemistry is governed by competition among several fast pathways. It can abstract hydrogen, add to a reacting species, or combine with another species. Which pathway dominates determines whether the radical continues a chain reaction, contributes to a new product, or is removed. This branching behavior makes reaction conditions important to chemical outcomes.
In combustion and atmospheric chemistry, even a short-lived intermediate can influence larger reaction networks. Methyl radical reactions help researchers examine how chain reactions proceed and how pollutants form. Its participation connects individual bond-breaking and bond-forming events with system-level chemical behavior, making it relevant to both fuel-related chemistry and reactions occurring in the atmosphere.
A short lifetime makes the methyl radical a transient intermediate rather than a persistent product. Its rapid consumption means that changes in how it forms or what it encounters can alter the subsequent reaction sequence. Tracking this behavior helps connect radical generation with chain reactions, pollutant formation, and other chemical outcomes.
In plasma processes and organic synthesis, the methyl radical provides a chemically reactive intermediate whose behavior can shape reaction pathways. In plasma chemistry, its formation and reactions help explain transformations under energetic conditions. In synthesis, studying its hydrogen abstraction, addition, and combination reactions clarifies how methyl-containing compounds can participate in radical chemistry.