Azaserine inhibits purine biosynthesis at the step
A) PRPP + glutamine -> 5-phosphoribosylamine.
B) 5-phosphoribosylamine + glycine -> 5-phosphoribosylglycineamide.
C) IMP -> AMP.
D) folic acid -> tetrahydrofolic acid (THFA) .
E) none of the above.
Correct Answer:
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