1BV7

COUNTERACTING HIV-1 PROTEASE DRUG RESISTANCE: STRUCTURAL ANALYSIS OF MUTANT PROTEASES COMPLEXED WITH XV638 AND SD146, CYCLIC UREA AMIDES WITH BROAD SPECIFICITIES

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Work: 0.196 
  • R-Value Observed: 0.196 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history. 


Literature

Counteracting HIV-1 protease drug resistance: structural analysis of mutant proteases complexed with XV638 and SD146, cyclic urea amides with broad specificities.

Ala, P.J., Huston, E.E., Klabe, R.M., Jadhav, P.K., Lam, P.Y., Chang, C.H.

(1998) Biochemistry 37: 15042-15049

  • DOI: 10.1021/bi980386e
  • Structures With Same Primary Citation

  • PubMed Abstract: 

    • The long-term therapeutic benefit of HIV antiretroviral therapy is still threatened by drug-resistant variants. Mutations in the S1 subsite of the protease are the primary cause for the loss of sensitivity toward many HIV protease inhibitors, including our first-generation cyclic urea-based inhibitors DMP323 and DMP450 ...

    The long-term therapeutic benefit of HIV antiretroviral therapy is still threatened by drug-resistant variants. Mutations in the S1 subsite of the protease are the primary cause for the loss of sensitivity toward many HIV protease inhibitors, including our first-generation cyclic urea-based inhibitors DMP323 and DMP450. We now report the structures of the three active-site mutant proteases V82F, I84V, and V82F/I84V in complex with XV638 and SD146, two P2 analogues of DMP323 that are 8-fold more potent against the wild type and are able to inhibit a broad panel of drug-resistant variants [Jadhav, P. K., et al. (1997) J. Med. Chem. 40, 181-191]. The increased efficacy of XV638 and SD146 is due primarily to an increase in P2-S2 interactions: 30-40% more van der Waals contacts and two to four additional hydrogen bonds. Furthermore, because these new interactions do not perturb other subsites in the protease, it appears that the large complementary surface areas of their P2 substituents compensate for the loss of P1-S1 interactions and reduce the probability of selecting for drug-resistant variants.

    Organizational Affiliation: 

    Experimental Station, DuPont Pharmaceuticals, Wilmington, Delaware 19880, USA.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (HIV-1 PROTEASE)A, B99Human immunodeficiency virus 1Mutation(s): 1 
EC: 3.4.23.16 (PDB Primary Data), 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)
Find proteins for P04585 (Human immunodeficiency virus type 1 group M subtype B (isolate HXB2))
Explore P04585 
Go to UniProtKB:  P04585
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
XV6
Query on XV6
Download CCD File 
A
[4R-(4ALPHA,5ALPHA,6BETA,7BETA)]-3,3'-[[TETRAHYDRO-5,6-DIHYDROXY-2-OXO-4,7-BIS(PHENYLMETHYL)-1H-1,3-DIAZEPINE-1,3(2H)-D IYL] BIS(METHYLENE)]BIS[N-2-THIAZOLYLBENZAMIDE]
C41 H38 N6 O5 S2
JDALSSGOBMTZEP-NWJWHWDBSA-N		 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
XV6Ki :  0.5   nM  PDBBind
XV6Ki:  0.5   nM  Binding MOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Work: 0.196 
  • R-Value Observed: 0.196 
  • Space Group: P 61
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.8α = 90
b = 62.8β = 90
c = 83.5γ = 120
Software Package:
Software NamePurpose
X-PLORrefinement

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

  • Deposited Date: 1998-09-22 
  • Released Date: 1998-09-30 
    • Deposition Author(s): Ala, P., Chang, C.H.

Revision History 

  • Version 1.0: 1998-09-30
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-11-29
    Changes: Derived calculations