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DNA methylation plays a central role in the control of gene expression during development and cell differentiation, thus DNA methylation and demethylation processes are expected to be strictly regulated during these events. We have explored the expression levels of the genes encoding DNA methylases, methyl-CpG binding proteins and demethylases during in vitro differentiation of human carcinoma colon...
The turnover and localization of the enzyme DNA (cytosine-5) methyltransferase (Dnmt1) were studied during Paracentrotus lividus sea urchin embryo development using antibody preparations against the NH2 and COOH-terminal regions of the molecule. The antibodies reveal, by Western blots and whole-mount analyses, that the enzyme is differently required during embryonic development. The changeover point...
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