Oligonucleotides of a defined sequence, particularly oligodeoxyribonucleotides are prepared by an improved "triester" process. The oligodeoxyribonucleotides can be converted to DNA segments which can be used for insertion in plasmid DNA to code the plasmid DNA for predetermined purposes. For example, the plasmid DNA can be coded to stimulate the synthesis of polypeptide hormones by a bacterium such as E. Coli.
通过改进的 "三酯 "工艺制备具有确定序列的寡核苷酸,特别是寡脱氧核苷酸。寡脱氧核苷酸可转化为 DNA 片段,用于插入质粒 DNA 中,对质粒 DNA 进行编码以达到预定目的。例如,可对质粒 DNA 进行编码,以刺激大肠杆菌等细菌合成
多肽激素。