How RNase HI (Escherichia coli) promoted site-selective hydrolysis works on RNA in duplex with carba-LNA and LNA substituted antisense strands in an antisense strategy context?

Abstract excerpt

A detailed kinetic study of 36 single modified AON-RNA heteroduplexes shows that substitution of a single native nucleotide in the antisense strand (AON) by locked nucleic acid (LNA) or by diastereomerically pure carba-LNA results in site-dependent modulation of RNase H promoted cleavage of complementary mRNA strands by 2 to 5 fold at 5'-GpN-3' cleavage sites, giving up to 70% of the RNA cleavage products. The...

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