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. 1994 Mar;68(3):2016–2020. doi: 10.1128/jvi.68.3.2016-2020.1994

Characterization of human immunodeficiency virus type 1 variants with increased resistance to a C2-symmetric protease inhibitor.

D D Ho 1, T Toyoshima 1, H Mo 1, D J Kempf 1, D Norbeck 1, C M Chen 1, N E Wideburg 1, S K Burt 1, J W Erickson 1, M K Singh 1
PMCID: PMC236669  PMID: 8107264

Abstract

Inhibitors of the human immunodeficiency virus type 1 protease represent a promising class of antiviral drugs for the treatment of AIDS, and several are now in clinical trials. Here, we report the in vitro selection of viral variants with decreased sensitivity to a C2-symmetric protease inhibitor (A-77003). We show that a single amino acid substitution (Arg to Gln or Lys) at position 8 of the protease results in a substantial decrease in the inhibitory activity of the drug on the enzyme and a comparable increase in viral resistance. These findings, when analyzed by using the three-dimensional structure of the protease-drug complex, provide a strategic guide for the future development of inhibitors of the human immunodeficiency virus type 1 protease.

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Selected References

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