Methods and compositions for improving fidelity in a nucleic acid synthesis reaction

摘要

The invention provides methods and compositions for improving the fidelity of a sequencing-by-synthesis reaction by using a nucleotide derivative that forms a hydrogen bond with a complementary nucleotide on a template, but fails to form a phosphodiester bond with the 3' hydroxyl group of a primer under conditions otherwise suitable for a polymerization reaction; thereby blocking incorporation of a mismatched nucleotide.