問題詳情
82.tA researcher wants to isotope label purines with 15N for future spectroscopic studies. Which substrates when labeled with the heavy nitrogen would result in the most1 15N-enriched purines through de novo synthesis?
(A)tGlutamine, aspartate, glycine
(B)tGlycine, glutamine, N10-fbrmyl-THF
(C) Aspartate, glutamine, asparagine
(D)tGlycine, carbamoyl aspartate, glutamine
(E)tAspartate, glycine, 5-phosphoribosyl»a-pyrophosphate
參考答案
答案：A
統計：A:1,B:0,C:1,D:0,E:0
難度：計算中