DNA substrate specificity of pea DNA methylase
نویسندگان
چکیده
منابع مشابه
Human placental DNA methyltransferase: DNA substrate and DNA binding specificity.
We have partially purified a DNA methyltransferase from human placenta using a novel substrate for a highly sensitive assay of methylation of hemimethylated DNA. This substrate was prepared by extensive nick translation of bacteriophage XP12 DNA, which normally has virtually all of its cytosine residues replaced by 5-methylcytosine (m5C). Micrococcus luteus DNA was just as good a substrate if i...
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DNA methylase activity was detected in nuclei from pea shoots. The enzyme can only be extracted by low-salt treatment if the nuclei are pretreated with micrococcal nuclease. Only a single enzyme was detected, and it was purified to a specific activity of 1620 units/mg of protein. It has an Mr of 160,000 on gel filtration and SDS/PAGE. Pea DNA methylase methylates cytosine in all four dinucleoti...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1993
ISSN: 0264-6021,1470-8728
DOI: 10.1042/bj2930617