Surgery Which of the following is not true about hypoxanthineguanine phosphoribosyl transferase? A Predominantly present in liver B Involved in purine metabolism C PRPP is the substrate required D Its deficiency leads to Lysch Nyhan disease. 💡 Explanation Which of the following is not true about hypoxanthineguanine phosphoribosyl transferase? ✓ Correct Answer: C. PRPP is the substrate required