《蒙藏条约》蒙方签字人职衔辨析——对《近代俄国与中国西藏》译文的意见

Nucleoside 2'-deoxyribosyltransferase (NDT) is used to synthesize unnatural 2'-deoxyribonucleosides, modified mostly on the heterocyclic base. Here we describe a strategy for improving 2,3-dideoxyribosyl(ddR) transfer activity of NDT by combining mutagenesis and in vivo selection in E. coli.