title: Glutamine synthetase, an enzyme characteristic of vertebrate systems in invertebrate tissues.
mesh_terms: D000818:Animals; D003386:Brachyura; D001921:Brain / Q000201:enzymology; D004064:Digestive System / Q000201:enzymology; D005123:Eye / Q000201:enzymology*; D005974:Glutamate-Ammonia Ligase / Q000032:analysis*; D008974:Mollusca; D049831:Octopodiformes; D009900:Optic Nerve / Q000201:enzymology; D012160:Retina / Q000201:enzymology; D012617:Sea Urchins; D012867:Skin / Q000201:enzymology; D013900:Thoracic Nerves / Q000201:enzymology
chemical_list: D005974:Glutamate-Ammonia Ligase