title: Regulation of enzymes by covalent modification including hydrolysis of peptide bonds.
mesh_terms: D000641:Ammonia; D004798:Enzymes / Q000378:metabolism*; D004926:Escherichia coli / Q000201:enzymology; D005974:Glutamate-Ammonia Ligase / Q000378:metabolism; D005971:Glutamates; D005973:Glutamine; D006868:Hydrolysis; D008956:Models, Chemical; D010455:Peptides / Q000378:metabolism*; D012441:Saccharomyces cerevisiae / Q000201:enzymology; D014367:Tryptophan Synthase / Q000378:metabolism
chemical_list: D004798:Enzymes; D005971:Glutamates; D010455:Peptides; D005973:Glutamine; D000641:Ammonia; D014367:Tryptophan Synthase; D005974:Glutamate-Ammonia Ligase