A type of modified nucleotide, deoxynucleotide γ-amidotriphosphates (dNTPγNH2s), exhibited around five times higher stability than dNTPs. These phosphamide nucleotides can be utilized by several DNA polymerases, and the amplification of a 10 kb DNA fragment through the polymerase chain reaction (PCR) can be accomplished even under conditions of high temperature, extended storage, or repeated freeze–thaw
一种修饰核苷酸,脱氧核苷酸 γ-酰胺
三磷酸 (dNTPγNH 2 s),其稳定性比 dNTP 高大约五倍。这些
磷酰胺核苷酸可以被多种
DNA 聚合酶利用,即使在高温、长期储存或反复冻融循环的条件下,也可以通过聚合酶链式反应 (PCR) 完成 10 kb DNA 片段的扩增。然而,使用标准 dNTP 的对照 PCR 并不成功。这些结果表明dNTPγNH 2 s有潜力在PCR中替代dNTP。