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Which enzyme deficiency causes Lesch-Nyhan syndrome?
A. Hypoxanthine-guanine phosphoribosyltransferase (HGPRT)
B. Xanthine oxidase
C. Adenine phosphoribosyltransferase (APRT)
D. AMP deaminase
Correct Answer - A
Explanation
Ans. A.Hypoxanthine-guanine phosphoribosyltransferase (HGPRT)
Lesch-Nyhan syndrome (LNS), also known as juvenile gout, is a rare inherited disorder caused by a deficiency of the enzyme hypoxanthine-guanine phosphoribosyltransferase (HGPRT), produced by mutations in the HPRT gene located on the X chromosome