2IEO

Crystal structure analysis of HIV-1 protease mutant I84V with a potent non-peptide inhibitor (UIC-94017)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.53 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.143 
  • R-Value Observed: 0.146 

Starting Model: experimental
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This is version 1.5 of the entry. See complete history


Literature

High Resolution Crystal Structures of HIV-1 Protease with a Potent Non-Peptide Inhibitor (Uic-94017) Active Against Multi-Drug-Resistant Clinical Strains.

Tie, Y.Boross, P.I.Wang, Y.F.Gaddis, L.Hussain, A.K.Leshchenko, S.Ghosh, A.K.Louis, J.M.Harrison, R.W.Weber, I.T.

(2004) J Mol Biol 338: 341-352

  • DOI: https://doi.org/10.1016/j.jmb.2004.02.052
  • Primary Citation of Related Structures:  
    2IDW, 2IEN, 2IEO

  • PubMed Abstract: 

    The compound UIC-94017 (TMC-114) is a second-generation HIV protease inhibitor with improved pharmacokinetics that is chemically related to the clinical inhibitor amprenavir. UIC-94017 is a broad-spectrum potent inhibitor active against HIV-1 clinical isolates with minimal cytotoxicity. We have determined the high-resolution crystal structures of UIC-94017 in complexes with wild-type HIV-1 protease (PR) and mutant proteases PR(V82A) and PR(I84V) that are common in drug-resistant HIV. The structures were refined at resolutions of 1.10-1.53A. The crystal structures of PR and PR(I84V) with UIC-94017 ternary complexes show that the inhibitor binds to the protease in two overlapping positions, while the PR(V82A) complex had one ordered inhibitor. In all three structures, UIC-94017 forms hydrogen bonds with the conserved main-chain atoms of Asp29 and Asp30 of the protease. These interactions are proposed to be critical for the potency of this compound against HIV isolates that are resistant to multiple protease inhibitors. Other small differences were observed in the interactions of the mutants with UIC-94017 as compared to PR. PR(V82A) showed differences in the position of the main-chain atoms of residue 82 compared to PR structure that better accommodated the inhibitor. Finally, the 1.10A resolution structure of PR(V82A) with UIC-94017 showed an unusual distribution of electron density for the catalytic aspartate residues, which is discussed in relation to the reaction mechanism.


  • Organizational Affiliation

    Department of Chemistry, Georgia State University, Atlanta, GA 30303, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Protease
A, B
99Human immunodeficiency virus 1Mutation(s): 6 
Gene Names: gagpol
EC: 3.4.23.16
UniProt
Find proteins for Q7SSI0 (Human immunodeficiency virus 1)
Explore Q7SSI0 
Go to UniProtKB:  Q7SSI0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ7SSI0
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Binding Affinity Annotations 
IDSourceBinding Affinity
017 BindingDB:  2IEO Ki: min: 0.01, max: 6.6 (nM) from 8 assay(s)
EC50: 1.6 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.53 Å
  • R-Value Free: 0.196 
  • R-Value Work: 0.143 
  • R-Value Observed: 0.146 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.318α = 90
b = 86.216β = 90
c = 45.85γ = 90
Software Package:
Software NamePurpose
AMoREphasing
SHELXL-97refinement
MAR345data collection
HKL-2000data scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-10-03
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.3: 2017-10-18
    Changes: Refinement description
  • Version 1.4: 2021-10-20
    Changes: Database references, Derived calculations, Structure summary
  • Version 1.5: 2023-08-30
    Changes: Data collection, Refinement description