Abstract
Oligodeoxyribonucleotides modified with 5-[3-(1-pyrenecarboxamido)propynyl]-2'-deoxyuridine monomer X and proximal LNA monomers display higher affinity for complementary DNA, more pronounced increases in fluorescence emission upon DNA binding, and improved discrimination of SNPs at non-stringent conditions, relative to the corresponding LNA-free probes across a range of sequence contexts. The results reported herein suggest that the introduction of LNA monomers influences the position of nearby fluorophores via indirect conformational restriction, a characteristic that can be utilized to develop optimized fluorophore-labeled probes for SNP-discrimination studies.
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