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Detection of a CpA methylase in an insect system: characterization and substrate specificity (1992)

Devajyothi, Chalasani ; Brahmachari, Vani

Springer

Molecular and cellular biochemistry 110 (1992), S. 103-111

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ISSN: 1573-4919

Keywords: DNA methylation ; coccids ; processive enzyme ; RNA inhibition ; CpI methylation

Source: Springer Online Journal Archives 1860-2000

Topics: Biology , Chemistry and Pharmacology , Medicine

Notes: Abstract A cytosine-specific DNA methyltransferase (EC 2.1.1.37) has been purified to near homogeneity from a mealybug (Planococcus lilacinus). The enzyme can methylate cytosine residues in CpG sequences as well as CpA sequences. The apparent molecular weight of the enzyme was estimated as 135,000 daltons by FPLC. The enzyme exhibits a processive mode of action and a salt dependance similar to mammalian methylases. Mealybug methylase exhibits a preference for denatured DNA substrates.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF02454187

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