1a8g
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HIV-1 PROTEASE IN COMPLEX WITH SDZ283-910
OverviewOverview
Based on the X-ray structure of the human immunodeficiency virus type-1, (HIV-1) protease in complex with the statine-derived inhibitor SDZ283-910, a 542 ps molecular dynamics trajectory was computed. For comparison with, the 805 ps trajectory obtained for the uncomplexed enzyme, the theoretical, fluorescence anisotropy decay of the unliganded protease and the inhibitor, complex was calculated from the trajectories of the Trp6A/Trp6B and, Trp42A/Trp42B transition dipole moments. This enabled us to directly, compare the simulated data with the experimental picosecond time-resolved, fluorescence data. Fitting both experimental and simulated data to the, Kohlrausch-Williams-Watts (KWW) function exp(-t/tauk)beta revealed a very, good agreement for the uncomplexed protease as well as for the SDZ283-910, complex. Binding of the inhibitor induced a faster decay of both the, experimental and the computed protease fluorescence anisotropy decay. By, this integrative approach, the atomic detail of inhibitor-induced changes, in the conformational dynamics of the HIV-1 protease was experimentally, verified and will be used for further inhibitor optimisation.
About this StructureAbout this Structure
1A8G is a Single protein structure of sequence from Human immunodeficiency virus 1. Active as HIV-1 retropepsin, with EC number 3.4.23.16 Full crystallographic information is available from OCA.
ReferenceReference
X-ray structure and conformational dynamics of the HIV-1 protease in complex with the inhibitor SDZ283-910: agreement of time-resolved spectroscopy and molecular dynamics simulations., Ringhofer S, Kallen J, Dutzler R, Billich A, Visser AJ, Scholz D, Steinhauser O, Schreiber H, Auer M, Kungl AJ, J Mol Biol. 1999 Mar 5;286(4):1147-59. PMID:10047488
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