Storb Ursula, Stavnezer Janet
Department of Molecular Genetics and Cell Biology, University of Chicago, Chicago, IL 60637, USA.
Curr Biol. 2002 Oct 29;12(21):R725-7. doi: 10.1016/s0960-9822(02)01247-2.
Somatic hypermutation and switch recombination of immunoglobulin genes require the activity of the activation-induced deaminase, AID. Recent studies of mice deficient for the uracil-DNA glycosylase UNG, which removes U from DNA, suggest that AID catalyses the deamination of dC to dU during antibody diversification.
免疫球蛋白基因的体细胞超突变和类别转换重组需要活化诱导胞嘧啶脱氨酶(AID)的活性。最近对缺乏尿嘧啶-DNA糖基化酶UNG(UNG可从DNA中去除U)的小鼠的研究表明,AID在抗体多样化过程中催化dC脱氨生成dU。