Multiple Choice
Regulation of pyrimidine de novo synthesis in mammals is through allosteric control by
A) aspartate transcarbamoylase (ATCase)
B) OMP decarboxylase
C) dihydroorotase dehydrogenase
D) hypoxanthine-guanine phosphoribosyl transferase (HGPRTase)
E) ribose phosphate pyrophosphokinase
Correct Answer:
Verified
Correct Answer:
Verified
Q22: Defects in adenosine deaminase lead to increased
Q23: Dihydroorotate is synthesized from<br>A) glycine and carbamoyl
Q24: The common intermediate of purines AMP and
Q25: Which of the following is formed
Q26: What molecule is used to reduce ribonucleotide
Q28: In general, as nucleotides are catabolized,<br>A) dephosphorylation
Q29: In purine biosynthesis, amination of PRPP and
Q30: Ribonucleotide reductase relies on cofactors<br>A) Fe or
Q31: Which of the following is correct regarding
Q32: Having both regulatory and catalytic subunits, ribonucleotide