6DIF

Wild-type HIV-1 protease in complex with tipranavir


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.20 Å
  • R-Value Free: 0.187 
  • R-Value Work: 0.154 
  • R-Value Observed: 0.155 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Drug Resistance Mutation L76V Alters Nonpolar Interactions at the Flap-Core Interface of HIV-1 Protease.

Wong-Sam, A.Wang, Y.F.Zhang, Y.Ghosh, A.K.Harrison, R.W.Weber, I.T.

(2018) ACS Omega 3: 12132-12140

  • DOI: 10.1021/acsomega.8b01683
  • Primary Citation of Related Structures:  
    6DJ5, 6DJ7, 6DIL, 6DJ1, 6DJ2, 6DIF

  • PubMed Abstract: 
  • Four HIV-1 protease (PR) inhibitors, clinical inhibitors lopinavir and tipranavir, and two investigational compounds 4 and 5 , were studied for their effect on the structure and activity of PR with drug-resistant mutation L76V (PR L76V ) ...

    Four HIV-1 protease (PR) inhibitors, clinical inhibitors lopinavir and tipranavir, and two investigational compounds 4 and 5 , were studied for their effect on the structure and activity of PR with drug-resistant mutation L76V (PR L76V ). Compound 5 exhibited the best K i value of 1.9 nM for PR L76V , whereas the other three inhibitors had K i values of 4.5-7.6 nM, 2-3 orders of magnitude worse than for wild-type enzymes. Crystal structures showed only minor differences in interactions of inhibitors with PR L76V compared to wild-type complexes. The shorter side chain of Val76 in the mutant lost hydrophobic interactions with Lys45 and Ile47 in the flap, and with Asp30 and Thr74 in the protein core, consistent with decreased stability. Inhibitors forming additional polar interactions with the flaps or dimer interface of PR L76V were unable to compensate for the decrease in internal hydrophobic contacts. These structures provide insights for inhibitor design.


    Organizational Affiliation

    Department of Biology, Molecular Basis of Disease Program, Department of Computer Science, and Department of Chemistry, Georgia State University, Atlanta, Georgia 30303, United States.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
HIV-1 proteaseA, B99Human immunodeficiency virus 1Mutation(s): 5 
Gene Names: pol
EC: 3.4.23.16 (UniProt), 2.7.7.49 (UniProt), 2.7.7.7 (UniProt), 3.1.26.13 (UniProt), 3.1.13.2 (UniProt), 2.7.7 (UniProt), 3.1 (UniProt)
UniProt
Find proteins for P04585 (Human immunodeficiency virus type 1 group M subtype B (isolate HXB2))
Explore P04585 
Go to UniProtKB:  P04585
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
TPV (Subject of Investigation/LOI)
Query on TPV

Download Ideal Coordinates CCD File 
G [auth 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
GOL
Query on GOL

Download Ideal Coordinates CCD File 
F [auth A], I [auth B], J [auth B]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

Download Ideal Coordinates CCD File 
D [auth A], E [auth A], H [auth B]CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
NA
Query on NA

Download Ideal Coordinates CCD File 
C [auth A]SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
TPV Binding MOAD:  6DIF Ki: 0.02 (nM) from 1 assay(s)
BindingDB:  6DIF Ki: min: 8.00e-3, max: 8 (nM) from 2 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.20 Å
  • R-Value Free: 0.187 
  • R-Value Work: 0.154 
  • R-Value Observed: 0.155 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.3α = 90
b = 86.259β = 90
c = 46.005γ = 90
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing
SHELXL-97refinement

Structure Validation

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Ligand Structure Quality Assessment  



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Human Genome Research Institute (NIH/NHGRI)United StatesGM062920

Revision History  (Full details and data files)

  • Version 1.0: 2018-10-17
    Type: Initial release
  • Version 1.1: 2019-12-18
    Changes: Author supporting evidence