noun
deacetylation
Chemical term for the removal of an acetyl group from a molecule.
ヒストンの脱アセチル化は遺伝子発現を抑制する。
Histone deacetylation suppresses gene expression.
Acetylation, the opposite process of adding an acetyl group.
Compound of 脱 (datsu, 'de-', 'removal') + アセチル (asechiru, 'acetyl') + 化 (ka, '-ation').