問題詳情

39. Which description of ubiquitin is NOT correct?
(A) Ubiquitin is highly conserved in eukaryotes and prokaryotes.
(B) Ubiquitin attached to the ε-amino groups of several lysine residues on a proteindestined to be degraded.
(C) The energy for the isopeptide bonds of ubiquitination comes from ATPhydrolysis.
(D) Three enzymes (E1, E2 and E3) participate in the attachment of ubiquitin to aprotein.

參考答案

答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增

用户評論

【各選項詳解】評論

(A) 泛素在真核生物和原核生物中高度保守。泛素在真核生物中高度保守，但在原核生物中未發現。泛素介導的蛋白水解是真核細胞特有的過程。因此，原核生物中泛素保守的說法並不準確。