28 在合成嘌呤核苷酸關鍵步驟是受到下列何者催化?
(A)核糖核苷酸還原酶(ribonucleotide reductase)
(B)麸醯胺酸-PRPP-氨基轉移酶(glutamine-PRPP aminotransferase)
(C)絲氨酸羥甲基轉移酶(serine hydroxymethyl transferase)
(D)核醣-5-磷酸鹽焦磷酸激酶(ribose 5-phosphate pyrophosphokinase)
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統計: A(0), B(2), C(0), D(0), E(0) #1045707
統計: A(0), B(2), C(0), D(0), E(0) #1045707