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现在正准备用T载体克隆一个基因,于是查了查有关T载体的文献。在“Construction of T-vectors, a rapid and general system for direct cloning of unmodified PCR products”这篇仅有一页的文章中,作者写了一句话-“Vector self-ligation events are prohibited by the 3' thymidine overhang, and concatamerization of the insert is prohibited by the unphosphorylated 5' end, contributed by the oligonucleotide primer, as well as the 3' adenosine overhang added by Taq polymerase during the PCR reaction.”这里的Concatamerization是什么意思啊?引物使扩增的基因5‘端去磷酸化,但是这样的话,PCR产物如何与T载体连接啊? |
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