Abstract: Population-based sequence analysis of these 3 samples identified multidrug-resistance mutations in reverse transcriptase (M184V, T215Y, K219K/R) and protease (L101/V, K20R, M361, M46I, G48V, L63P, A71T, V771, V82T, 184V, L90M) in the 2 latter patient samples, along with numerous polymorphisms.
Drug resistance mutations can effect dimer stability of HIV-1 protease at neutral pH.
Abstract: Sedimentation equilibrium studies were also carried out on several drug-resistant HIV-1 protease mutants: V82F, V82F/I84V, V82T/I84V, and L90M.
A computational study of the resistance of HIV-1 aspartic protease to the inhibitors ABT-538 and VX-478 and design of new analogues.
PMID: 9464253
1998
Biochemical and biophysical research communications
Abstract: Reasons for the decrease in binding affinities with the two critical mutants (V82T/I84V and 4X) have also been elucidated in detail.
Abstract: Recent experimental findings with HIV-1 protease (HIV-1 PR) mutants containing variations at four residues, M46I, L63P, V82T and I84V, have shown that only mutants containing the latter two exhibit cross resistance to the inhibitors ABT-538 and VX-478.
Abstract: The V82T and I84V modifications in fact concern residues in the active site while the other two are in the flap (M46I) and hinge (L63P) domains of the enzyme.
Drug-resistant HIV-1 proteases identify enzyme residues important for substrate selection and catalytic rate.
Abstract: Mutants containing R8K, V32I, V82T, I84V, G48V/L90M, or V82T/I84V substitutions were analyzed for differences in substrate preference and catalytic efficiency using a set of single amino acid substituted HIV-1 CA-NCa cleavage site peptides.
Resistance mutations in protease and reverse transcriptase genes of human immunodeficiency virus type 1 isolates from patients with combination antiretroviral therapy failure.
PMID: 9780274
1998
The Journal of infectious diseases
Abstract: The most commonly observed PR mutations were L10I, V82A/T/F, and L90M.
Emergence of protease inhibitor resistance mutations in human immunodeficiency virus type 1 isolates from patients and rapid screening procedure for their detection.
PMID: 8913459
1996
Antimicrobial agents and chemotherapy
Abstract: Patient human immunodeficiency virus type 1 (HIV-1) isolates that are resistant to protease inhibitors may contain amino acid substitutions L10I/V, M46L/I, G-48V, L63P, V82A/F/T, I84V, and L90M in the protease gene.
Mutational anatomy of an HIV-1 protease variant conferring cross-resistance to protease inhibitors in clinical trials. Compensatory modulations of binding and activity.
PMID: 8943242
1996
The Journal of biological chemistry
Abstract: In contrast, the double substitutions of V82T and I84V are detrimental to the ability of the protease to bind and, thereby, to catalyze.
Abstract: Site-specific substitutions of as few as four amino acids (M46I/L63P/V82T/I84V) of the human immunodeficiency virus type 1 (HIV-1) protease engenders cross-resistance to a panel of protease inhibitors that are either in clinical trials or have recently been approved for HIV therapy (Condra, J.
Abstract: Two of these mutations (V82T/I84V) are located in, while the other two (M46I/L63P
Three-dimensional structure of a mutant HIV-1 protease displaying cross-resistance to all protease inhibitors in clinical trials.
PMID: 7665551
1995
The Journal of biological chemistry
Abstract: Analysis of mutational effects in the human immunodeficiency virus type-1 (HIV-1) provirus has revealed that as few as four amino acid side-chain substitutions in the HIV-1 protease (M46I/L63P/V82T/I84V) suffice to yield viral variants cross-resistant to a panel of protease inhibitors either in or being considered for clinical trials (Condra, J.
Abstract: In the MK639-bound form, the V82T substitution introduces an unfavorable hydrophilic moiety for binding in the active site and the I84V substitution creates a cavity (unoccupied by water) that should lead to a decrease in van der Waals contacts with the inhibitor.