3SPK

Tipranavir in Complex with a Human Immunodeficiency Virus Type 1 Protease Variant


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.24 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.177 

wwPDB Validation 3D Report Full Report



Literature

The higher barrier of darunavir and tipranavir resistance for HIV-1 protease.

Wang, Y.Liu, Z.Brunzelle, J.S.Kovari, I.A.Dewdney, T.G.Reiter, S.J.Kovari, L.C.

(2011) Biochem Biophys Res Commun 412: 737-742

  • DOI: 10.1016/j.bbrc.2011.08.045
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Darunavir and tipranavir are two inhibitors that are active against multi-drug resistant (MDR) HIV-1 protease variants. In this study, the invitro inhibitory efficacy was tested against a MDR HIV-1 protease variant, MDR 769 82T, containing the drug r ...

    Darunavir and tipranavir are two inhibitors that are active against multi-drug resistant (MDR) HIV-1 protease variants. In this study, the invitro inhibitory efficacy was tested against a MDR HIV-1 protease variant, MDR 769 82T, containing the drug resistance mutations of 46L/54V/82T/84V/90M. Crystallographic and enzymatic studies were performed to examine the mechanism of resistance and the relative maintenance of potency. The key findings are as follows: (i) The MDR protease exhibits decreased susceptibility to all nine HIV-1 protease inhibitors approved by the US Food and Drug Administration (FDA), among which darunavir and tipranavir are the most potent; (ii) the threonine 82 mutation on the protease greatly enhances drug resistance by altering the hydrophobicity of the binding pocket; (iii) darunavir or tipranavir binding facilitates closure of the wide-open flaps of the MDR protease; and (iv) the remaining potency of tipranavir may be preserved by stabilizing the flaps in the inhibitor-protease complex while darunavir maintains its potency by preserving protein main chain hydrogen bonds with the flexible P2 group. These results could provide new insights into drug design strategies to overcome multi-drug resistance of HIV-1 protease variants.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, Wayne State University School of Medicine, Detroit, MI, USA.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HIV-1 proteaseA, B99Human immunodeficiency virus 1Mutation(s): 0 
Gene Names: pol
EC: 3.4.23.16
Find proteins for Q000H7 (Human immunodeficiency virus 1)
Explore Q000H7 
Go to UniProtKB:  Q000H7
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
TPV
Query on TPV

Download CCD File 
A, B
N-(3-{(1R)-1-[(6R)-4-HYDROXY-2-OXO-6-PHENETHYL-6-PROPYL-5,6-DIHYDRO-2H-PYRAN-3-YL]PROPYL}PHENYL)-5-(TRIFLUOROMETHYL)-2-PYRIDINESULFONAMIDE
C31 H33 F3 N2 O5 S
SUJUHGSWHZTSEU-FYBSXPHGSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
TPVIC50 :  3.0199999809265137   nM  PDBBind
TPVIC50:  3.0199999809265137   nM  Binding MOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.24 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.174 
  • R-Value Observed: 0.177 
  • Space Group: P 61
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 63.119α = 90
b = 63.119β = 90
c = 83.54γ = 120
Software Package:
Software NamePurpose
HKL-2000data collection
AMoREphasing
REFMACrefinement
DENZOdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-10-12
    Type: Initial release