Regulation of NAD biosynthesis via the pyridine nucleotide cycle.

Adenosine Triphosphate/metabolism Animals Bacillus/enzymology,growth & development Carbon Isotopes Escherichia coli/enzymology Hypophysectomy In Vitro Techniques Liver/enzymology NAD/biosynthesis NADP/pharmacology Niacinamide/metabolism Nicotinic Acids/pharmacology Nucleotides/metabolism Pyridines/metabolism Pyrophosphatases/metabolism Rats Transferases/metabolism Tryptophan/metabolism Tryptophan Oxygenase/antagonists & inhibitors,metabolism

Carbon Isotopes Nicotinic Acids Nucleotides Pyridines NAD Niacinamide NADP Tryptophan Adenosine Triphosphate Tryptophan Oxygenase Transferases Pyrophosphatases