title: Product induction of purine hydroxylase II in Asperigillus nidulans.
abstract: By the use of a mutation, hxB-20, that eliminates purine hydroxylase II activity but retains cross-reacting material and an ancillary NADH dehydrogenase activity, it has been established that 6-hydroxynicotinic acid rather than nicotinic acid, is the true inducer of purine hydroxylase II.
mesh_terms: D001233:Aspergillus nidulans / Q000235:genetics*; D004790:Enzyme Induction; D006899:Mixed Function Oxygenases / Q000096:biosynthesis*; D009154:Mutation; D009539:Nicotinic Acids / Q000494:pharmacology; D011687:Purines / Q000378:metabolism
chemical_list: D009539:Nicotinic Acids; D011687:Purines; D006899:Mixed Function Oxygenases