In vitro methylation of DNA with Hpa II methylase.

Abstract

The enzyme Hpa II methylase extracted and partially purified from Haemophilus parainfluenza catalyzes the methylation of the tetranucleotide sequence CCGG at the internal cytosine. The enzyme will methylate this sequence if both DNA strands are unmethylated or if only one strand is unmethylated. Conditions have been developed for producing fully methylated… (More)

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