Analogs of ribonucleotides (RNA) stable to enzymatic hydrolysis were prepared and characterized. Computational investigations revealed that this class of compounds with a modified triphosphate exhibits the correct polarity and minimal steric effects compared to the natural molecule. Non-hydrolysable properties as well as the ability of the modified nucleotide to be recognized by enzymes were probed by performing single-turnover gap filling assays with T7 RNA polymerase and DNA polymerase β.
Keywords: Fluorinated phosphonate; Isostericity and isopolarity; Non-hydrolysable nucleotide analogs; Ribonucleotides; Single-turnover gap filling assay.