Azaserine inhibits?
In de novo synthesis of purine nucleotides, there are 10 steps. The 4th step (addition of N3) is catalysed by the enzyme Formyl glycinamide ribonucleotide amidotransferase. This enzyme is inhibited by azaserine, an anticancer drug. Reference: Harpers illustrated biochemistry 30th edition
Glycinamide ribonucleotide synthetase
Glycinamide ribonucleotide transformylase
Formyl glycinamide ribonucleotide amidotransferase
Inosine monophosphate synthase
miscellaneous