2FXE

X-ray crystal structure of HIV-1 protease CRM mutant complexed with atazanavir (BMS-232632)

Summary for 2FXE

• Entry DOI: 10.2210/pdb2fxe/pdb
• Related: 2FXD
• Descriptor: pol protein, SULFATE ION, ACETATE ION, ... (6 entities in total)
• Functional Keywords: human immunodeficiency virus (hiv), hiv-1 protease, reyataz, atazanavir, bms-232632, hydrolase
• Biological source: Human immunodeficiency virus 1
• Total number of polymer chains: 2
• Total formula weight: 22687.60

Authors

Sheriff, S.,Klei, H.E. (deposition date: 2006-02-05, release date: 2007-02-20, Last modification date: 2023-08-30)

Primary citation

Klei, H.E.,Kish, K.,Lin, P.F.,Guo, Q.,Friborg, J.,Rose, R.E.,Zhang, Y.,Goldfarb, V.,Langley, D.R.,Wittekind, M.,Sheriff, S.
X-ray crystal structures of human immunodeficiency virus type 1 protease mutants complexed with atazanavir.
J.Virol., 81:9525-9535, 2007

PubMed Abstract: Atazanavir, which is marketed as REYATAZ, is the first human immunodeficiency virus type 1 (HIV-1) protease inhibitor approved for once-daily administration. As previously reported, atazanavir offers improved inhibitory profiles against several common variants of HIV-1 protease over those of the other peptidomimetic inhibitors currently on the market. This work describes the X-ray crystal structures of complexes of atazanavir with two HIV-1 protease variants, namely, (i) an enzyme optimized for resistance to autolysis and oxidation, referred to as the cleavage-resistant mutant (CRM); and (ii) the M46I/V82F/I84V/L90M mutant of the CRM enzyme, which is resistant to all approved HIV-1 protease inhibitors, referred to as the inhibitor-resistant mutant. In these two complexes, atazanavir adopts distinct bound conformations in response to the V82F substitution, which may explain why this substitution, at least in isolation, has yet to be selected in vitro or in the clinic. Because of its nearly symmetrical chemical structure, atazanavir is able to make several analogous contacts with each monomer of the biological dimer.

PubMed: 17537865
DOI: 10.1128/JVI.02503-05

Experimental method

X-RAY DIFFRACTION (1.8 Å)