COMPOSITION FOR HOT-START PCR COMPRISING BLOCKING OLIGONUCLEOTIDE

摘要

The present invention relates to a composition for hot-start PCR, more precisely a composition for hot-start PCR characteristically prepared by adding the blocking oligonucleotide having the hydroxyl group at 3'-end blocked and the nucleotide sequence complementary to the primer to the conventional PCR composition containing reaction buffer, MgCl2, 4 kinds of dNTP, and DNA polymerase. The composition for hot-start PCR of the present invention can give more authentic PCR results by inhibiting smear band of PCR amplification product caused by non-specific reaction or primer-dimer formation at low temperature since the blocking oligonucleotide included therein can be dissociated at the lower temperature than melting temperature of the primer.