Acetylation

A biochemical process in which an acetyl group (CH₃CO) is transferred to a molecule, typically a protein, from a donor molecule like acetyl-CoA. This modification usually occurs on the lysine residues of proteins, particularly histones, which are involved in DNA packaging. Acetylation can have significant effects on the structure and function of proteins, and it plays a critical role in regulating various biological processes, including chromatin remodeling.