埋葬浪漫 發問時間: 科學化學 · 10 年前

●Urea cycle尿素循環的兩個胺基

在尿素循環中,

常問到的就是產物Urea其中的兩個胺基

究竟是從哪兩個胺基酸來的?

(還是每個胺基酸都有可能?)

1 個解答

評分
  • ?
    Lv 4
    10 年前
    最佳解答

    印象中是

    Arg and Asp

    The urea cycle consists of five reactions: two mitochondrial and three cytosolic. The cycle converts two amino groups, one from NH4+ and one from Asp, and a carbon atom from HCO3−, to the relatively nontoxic excretion product urea at

    the cost of four "high-energy" phosphate bonds (3 ATP hydrolyzed to 2 ADP and one ATP to AMP). Orn is the carrier of these carbon and nitrogen atoms.

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