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pubmed:abstractText |
5-Isopropyl-2'-deoxyuridine (ip5dU) was recently recognized as a clinically useful antiherpetic (HSV-1) agent. An ip5dU-containing polynucleotide, poly (dA-dT, ip5dU) was prepared to study how physical and bio-organic properties of the synthetic DNA model poly (dA-dT) would change upon partial substitution of thymidine. Synthesis was carried out with DNA polymerase enzyme and the polymers contained 7-9% of ip5dU. It proved to be less thermostable than poly (dA-dT) and the transition width was highly increased. Although it was a very efficient template for DNA polymerase enzyme, template activity for RNA synthesis was strongly reduced by the presence of ip5dU. Diminished stability against enzymic degradation, especially against single-strand-specific Nuclease S1 was also observed.
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