분자에 메틸기를 도입하거나 다른 원자 또는 작용기와 치환하는 화학적 또는 생화학적 반응.
The chemical or biochemical process of adding a methyl group (CH3) to a molecule, such as DNA or a protein, often influencing gene activity or chemical properties.
예문:
"DNA methylation is a key epigenetic mechanism that can silence specific genes during development."
"The methylation of certain heavy metals makes them more soluble and toxic to living organisms."
"Abnormal methylation patterns are often used as biomarkers for the early detection of cancer."