
New oligonucleotide probes for regiospecific cleavage of RNA molecules by hybridase (RNase H) are suggested. RNase H from E. coli is shown to site-specifically split eight phosphodiester bonds in RNA in the heteroduplex, formed by 5S rRNA and d(ACCACCGCGCT). The partial substitution of deoxycytidines in position 5, 6, 8, 10 of the probe by 2'-O-methylcytidines leads to unique (regiospecific) RNA cleavage between U25 and C26.
Base Sequence, Hydrolysis, Endoribonucleases, Molecular Sequence Data, Ribonuclease H, Nucleic Acid Heteroduplexes, RNA, Oligonucleotide Probes, Chromatography, High Pressure Liquid
Base Sequence, Hydrolysis, Endoribonucleases, Molecular Sequence Data, Ribonuclease H, Nucleic Acid Heteroduplexes, RNA, Oligonucleotide Probes, Chromatography, High Pressure Liquid
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