Involved in polyamine metabolism. Catalyzes the deacetylation of various acetylated polyamines such as N-acetylputrescine and N-acetylcadaverine. H2O + N-acetylputrescine = acetate + putrescine H2O + N-acetylcadaverine = acetate + cadaverine Binds 1 zinc ion per subunit. Amine and polyamine metabolism. Homodimer. Belongs to the histone deacetylase family.