Abstract
Recently, 7-substituted 7-deazapurine nucleoside triphosphates and 5-substituted pyrimidine nucleoside triphosphates (dN(am)TPs) were synthesized to extend enzymatically using commercially available polymerase. However, extension was limited when we attempted to incorporate the substrates consecutively. To address this, we have produced a mutant polymerase that can efficiently accept the modified nucleotide with amphiphilic groups as substrates. Here we show that the KOD polymerase mutant, KOD exo(-)/A485L, had the ability to incorporate dN(am)TP continuously over 50nt, indicating that the mutant is sufficient for generating functional nucleic acid molecules.
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