問題詳情

50.下列何種酵素可催化purine nucleotides生合成？
(A)hypoxanthine guanine phosphoribosyl transferase（HGPRT）
(B)amidophosphoribosyl transferase
(C)thymidylate synthetase
(D)xanthine oxidase

參考答案

答案：B
難度：非常困難0.181818
統計：A(3),B(2),C(3),D(3),E(0)

用户評論

【如果詳解被鎖找 北醫王瑞賢】評論

【解題】(B)節錄自7th Foey's p.1239內文(B) Purine Antagonists: Amidophosphoribosyl TransferasenInhibitorsnThe rate-limiting enzyme in the synthesis of these purine nucleotides is amidophosphoribosylntransferase (also known as phosphoribosylpyrophosphate amido transferase

【ld252252222】評論

關於A選項的HGPRTHGPRT is a transferase that catalyzes conversion of hypoxanthine to inosine monophosphate and guanine to guanosine monophosphate.