At least 70% of plus or minus strands of adenovirus-associated virus DNA contain self-complementary sequences at or near their termini. Self-annealing of these sequences generates circular molecules that are closed by duplex, hydrogen-bonded segments. The self-annealed segments are sensitive to exonuclease III and have a thermal stability comparable to that of double-stranded DNA molecules. Len...

T he DNA in our cell nuclei contains all the information necessary to direct our biological functions. The gene is 1 unit of such information that usually specifies the expression of 1 protein product. A detailed knowledge of each gene will enable us to understand disease at the molecular level. To study each gene we must purify and study it in isolation. This process is usually described as ge...

We have previously shown that DNA demethylation by chick embryo 5-methylcytosine (5-MeC)-DNA glycosylase needs both protein and RNA. RNA from enzyme purified by SDS-PAGE was isolated and cloned. The clones have an insert ranging from 240 to 670 bp and contained on average one CpG per 14 bases. All six clones tested had different sequences and did not have any sequence homology with any other kn...