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Nucleic Acids Res. 1998 Sep 1;26(17):4063-7.

4'-Acylated thymidine 5'-triphosphates: a tool to increase selectivity towards HIV-1 reverse transcriptase.

Author information

1
Department of Chemistry, University of Basel, St Johanns-Ring 19, CH-4056 Basel, Switzerland.

Abstract

4'-Acylated thymidines represent a new class of DNA chain terminators, since they have been shown to act as post-incorporation chain-terminating nucleotides despite the presence of a free 3'-hydroxyl group. Here, we describe the action of the 4'-acetyl- (MeTTP) and 4'-propanoylthymidine 5'-triphosphate (EtTTP) on HIV-1 reverse transcriptase in RNA- and DNA-dependent DNA synthesis and on DNA synthesis catalyzed by the cellular DNA polymerases alpha, beta, delta and epsilon. MeTTP exhibits a high selectivity towards HIV-1 reverse transcriptase. By the use of the bulkier propanoyl group as the 4'-substituent of the nucleoside 5'-triphosphate, selectivity towards HIV-1 reverse transcriptase could be increased without affecting substrate efficiency. Thus, 4'-modifications may serve as a tool to increase selectivity towards HIV-1 reverse transcriptase.

PMID:
9705520
PMCID:
PMC147810
DOI:
10.1093/nar/26.17.4063
[Indexed for MEDLINE]
Free PMC Article

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