Benzo[a]pyreneDerived DNA Lesions Decrease DNA Methylation by Murine Methyltransferase DNMT3A2статья
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Дата последнего поиска статьи во внешних источниках: 29 мая 2018 г.
Аннотация:We have studied the impact of DNA damage by one of the most common carcinogens,
benzo[a]pyrene, on the functioning of the truncated isoform of DNA methyltransferase Dnmt3a (Dnmt3a2).
It is revealed with 30mer model DNA substrates that DNA methylation rates are drastically reduced when
the lesions disturb the structure of the Dnmt3a recognition site or hinder the interaction of the enzyme cat
alytic loop with the DNA minor groove. Under the chosen conditions, the PWWP domain of Dnmt3a pos
sessing lower affinity to DNA in comparison with the catalytic domain does not influence catalysis