Methylase

Part of speech: noun

Definitions

1. An enzyme that adds methyl groups to DNA or other molecules, modifying their function or activity; a catalyst facilitating methylation in biochemical processes; a protein influencing gene expression by transferring methyl groups to specific substrates
2. A type of enzyme responsible for the transfer of methyl groups onto DNA, proteins, or other compounds, altering molecular behavior; a biological catalyst that mediates methylation reactions; a molecule playing a key role in epigenetic regulation by attaching methyl groups
3. A protein enzyme that catalyzes the addition of a methyl group to target molecules such as DNA, affecting gene regulation; an agent that modifies biochemical substances via methyl transfer; an essential enzyme in processes involving methylation and molecular modification

Etymology: Methylase is a compound of "methyl" and "-ase," and its story runs through a wine-related word. "Methyl" comes from German "Methyl," coined in the 1830s by chemists working on wood spirit. They took the Greek "methu," meaning wine, and the Greek "hylē," meaning wood or matter, because methyl alcohol was distilled from wood. The name thus records a liquid that smelled like wine but came from timber. The suffix "-ase" has a different origin. It was cut from "diastase," the first enzyme ever isolated, named in 1833 by French chemists Anselme Payen and Jean-François Persoz from the Greek "diastasis," meaning separation. Once chemists saw that enzymes were named with "-ase," the ending spread to every catalyst they discovered. "Methylase" therefore joins "methyl" to that enzyme-marking ending, describing an enzyme that transfers methyl groups.

Synonyms: methyltransferase, enzyme, catalyst