title: Metabolic pathways of ammoniogenesis in the shrimp Crangon crangon L.: possible role of glutamate dehydrogenase.
abstract: The oxidative deamination of glutamate by glutamate dehydrogenase (GDH) was determined in crude homogenates of the shrimp Crangon crangon. The GDH activity of whole shrimps (1.192 +/- 0.164 UI/g wet wt and 0.032 +/- 0.004 UI mg protein) (+/- SD) is probably sufficient to account for all the ammonia excretion of this species. Starvation markedly influenced GDH activity. A 50% decrease of GDH activity was observed following 7 days of fasting but subsequently no further decrease in GDH activity was noticed during starvation up to a maximum of 17 days.
mesh_terms: D000244:Adenosine Diphosphate / Q000494:pharmacology; D000641:Ammonia / Q000378:metabolism*; D000818:Animals; D033364:Decapoda / Q000378:metabolism*; D005969:Glutamate Dehydrogenase / Q000378:metabolism*; D007700:Kinetics; D009243:NAD / Q000378:metabolism; D009747:Nutritional Physiological Phenomena
chemical_list: D009243:NAD; D000244:Adenosine Diphosphate; D000641:Ammonia; D005969:Glutamate Dehydrogenase