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The site-specific endonuclease BspLU4I was discovered in the thermophilic Bacillus species LU4 strain and purified to functionally pure state by chromatography on blue agarose, hydroxyapatite HTP, and heparin-Sepharose columns. Analysis of cleavage patterns of different DNAs with known nucleotide sequences demonstrated that the enzyme recognizes the CPyCGPuG site on the DNA. Cleavage points in the...
A new method for hybridization analysis of nucleic acids is proposed on the basis of the ability of site-specific nickases to cleave only one DNA strand. The method is based on the use of a labeled oligonucleotide with the recognition site of the nickase hybridized with the target (DNA or RNA) at an optimal temperature of the enzyme (55°C). The two shorter oligonucleotides formed after the cleavage...
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