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DNA methyltransferases genes of the BspACI restriction-modification system from Bacillus psychrodurans AC have been cloned in E. coli cells. Analysis of amino acid sequences of the proteins showed that both of these genes belong to C5 DNA methyltransferases. Gene M1.BspACI has been subcloned in pJW2 vector. A high-purity recombinant enzyme has been obtained using chromatography on different carriers...
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