What does methylating mean?
Methylating describes the addition of a methyl group—a carbon atom bonded to three hydrogen atoms—to a molecule. The term is especially important in molecular biology and chemistry because methylation can alter a substance’s structure, activity, or biological function. In genetics, methylating DNA is associated with changes in gene regulation; some DNA methylation patterns can affect whether particular genes are expressed. “Methylating agent” and “methylating reagent” refer to substances that carry out this modification, while “methylating enzymes” describe biological catalysts that perform it. Although some methylating reactions are routine and essential, certain methylating chemicals are toxic or carcinogenic. The word is technical rather than everyday and is normally used attributively, as in “methylating agent,” or to describe an active biochemical process.
Causing or performing the introduction of a methyl group into a molecule.
"The compound acts as a potent methylating agent."
Chiefly used in technical chemistry, biochemistry, and genetics.
To introduce a methyl group into a molecule.
"These enzymes methylate selected regions of DNA."
The -ing form is commonly used in descriptions of chemical or biological processes.
Every cell carries a chemical reminder of its own past: patterns of DNA methylation help determine which genes are switched on or off.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does methylating come from?
The word is formed from methylate, which combines methyl with the suffix -ate. Methyl entered English through French méthyle from Greek methylē, a term associated with methu, “alcohol,” in the sense of an intoxicating or strongly scented substance. The Greek root was also associated with sweetness, a connection reflected in the chemical sense of methyl as the simplest alkyl group.
Related word forms
How methylating is actually used
Methylating is chiefly used in chemistry, molecular biology, and genetics. It is normally attributive before a noun, as in “methylating agent,” while the verb form is often used in technical descriptions of chemical processes.