作者:Andreas Marx、Anna Baccaro、Samuel Weisbrod
DOI:10.1055/s-2007-983728
日期:2007.7
Two novel modified 2′-deoxyuridine triphosphates carrying an azide functionality linked to the nucleobase were synthesized. For probing the sterical influence on enzymatic incorporation and Staudinger ligation, differently sized flexible linkers were chosen. Both nucleotides can completely replace natural thymidine in primer extension as well as polymerase chain reaction (PCR) using PYROCOCCUS WOESEI
合成了两种新型修饰的 2'-脱氧尿苷三磷酸,其携带与核碱基相连的叠氮官能团。为了探究对酶掺入和施陶丁格连接的空间影响,选择了不同大小的柔性接头。这两种核苷酸都可以在引物延伸以及使用 PYROCOCCUS WOESEI DNA 聚合酶的聚合酶链式反应 (PCR) 中完全取代天然胸苷。然而,对于以较大基因片段作为模板的 PCR,较长的接头会干扰 DNA 聚合酶并产生较少的产物。对于叠氮化物标记的引物延伸产物,随后通过施陶丁格连接实现了适当功能化的膦的偶联,例如生物素作为亲和标签的偶联。