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- W2068049658 abstract "It has been recently demonstrated that HIV-1 reverse transcriptase is the target of two diterpenes, (6 R)-6-hydroxydichotoma-3,14-diene-1,17-dial (compound 1) and (6 R)-6-acetoxydichotoma-3,14-diene-1,17-dial (compound 2), that inhibit HIV-1 replication in vitro. In this work, the effects of both diterpenes on the kinetic properties of the recombinant HIV-1 reverse transcriptase (RT) enzyme were evaluated. RNA-dependent DNA-polymerase (RDDP) activity assays demonstrated that both diterpenes behave as non-competitive inhibitors with respect to dTTP and uncompetitive inhibitors with respect to poly(rA).oligo(dT) template primers. The K(i) values obtained for compounds 1 and 2 were 10 and 35 microM, respectively. Neither of these diterpenes affected the DNA-dependent DNA-polymerase (DDDP) activity of the HIV-1 RT. The RDDP activities of AMV-RT and MMLV-RT enzymes were also inhibited by compounds 1 and 2. In contrast to the HIV-1 enzyme, the DDDP activities of AMV-RT and MMLV-RT enzymes were significantly reduced by compound 1. Taken together, our results demonstrate that compound 1 is a more effective inhibitor of the viral reverse transcriptases from HIV-1, AMV and MMLV than compound 2. The kinetic behavior analyses of the HIV-1 RT demonstrate that both diterpenes have similar mechanisms of inhibition of RDDP activity." @default.
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- W2068049658 date "2005-10-01" @default.
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- W2068049658 title "Effects of Diterpenes Isolated from the Brazilian Marine Alga<i>Dictyota menstrualis</i>on HIV-1 Reverse Transcriptase" @default.
- W2068049658 doi "https://doi.org/10.1055/s-2005-873113" @default.
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