narrower concept Asparaginase PubMed MeSh Term Dihydroorotase PubMed MeSh Term Histone Deacetylases PubMed MeSh Term Peptide-N4-(N-acetyl-beta-glucosaminyl) Asparagine Amidase PubMed MeSh Term Urease PubMed MeSh Term beta-Lactamases PubMed MeSh Term