2QNN

HIV-1 protease in complex with a multiple decorated pyrrolidine-based inhibitor

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.48 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.170 
  • R-Value Observed: 0.170 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history. 


Literature

Structure-Guided Design of C2-Symmetric HIV-1 Protease Inhibitors Based on a Pyrrolidine Scaffold.

Blum, A., Bottcher, J., Heine, A., Klebe, G., Diederich, W.E.

(2008) J Med Chem 51: 2078-2087

  • DOI: 10.1021/jm701142s
  • Primary Citation of Related Structures:  
    2PQZ, 2PWC, 2PWR, 2QNN, 2QNP, 2QNQ

  • PubMed Abstract: 

    • Infections with the human immunodeficiency virus, which inevitably lead to the development of AIDS, are still among the most serious global health problems causing more than 2.5 million deaths per year. In the pathophysiological processes of this pandemic, HIV protease has proven to be an invaluable drug target because of its essential role in the virus' replication process ...

    Infections with the human immunodeficiency virus, which inevitably lead to the development of AIDS, are still among the most serious global health problems causing more than 2.5 million deaths per year. In the pathophysiological processes of this pandemic, HIV protease has proven to be an invaluable drug target because of its essential role in the virus' replication process. By use of pyrrolidine as core structure, symmetric 3,4-bis-N-alkylsulfonamides were designed and synthesized enantioselectively from D-(-)-tartaric acid as a new class of HIV protease inhibitors. Structure-guided design using the cocrystal structure of an initial lead as starting point resulted in a second series of inhibitors with improved affinity. The binding modes of four representatives were determined by X-ray crystallography to elucidate the underlying factors accounting for the SAR. With this information for further rational design, the combination of suitable side chains resulted in a final inhibitor showing a significantly improved affinity of K(i) = 74 nM.

    Organizational Affiliation: 

    Institut für Pharmazeutische Chemie, Philipps-Universität Marburg, Marbacher Weg 6, Marburg, Germany.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Gag-Pol polyprotein (Pr160Gag-Pol)A, B99Human immunodeficiency virus 1Mutation(s): 0 
Gene Names: gag-pol
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)
UniProt
Find proteins for P03367 (Human immunodeficiency virus type 1 group M subtype B (isolate BRU/LAI))
Explore P03367 
Go to UniProtKB:  P03367
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
QN1 (Subject of Investigation/LOI)
Query on QN1
Download Ideal Coordinates CCD File 
F [auth B]4,4'-[(3S,4S)-pyrrolidine-3,4-diylbis({[4-(trifluoromethyl)benzyl]imino}sulfonyl)]dibenzamide
C34 H31 F6 N5 O6 S2
QVMBQAVVCRRZFT-KYJUHHDHSA-N		 Ligand Interaction
GOL
Query on GOL
Download Ideal Coordinates CCD File 
C [auth A], G [auth B]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N		 Ligand Interaction
CL
Query on CL
Download Ideal Coordinates CCD File 
D [auth B], E [auth B]CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M		 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
QN1 PDBBind:  2QNN Ki: 70 (nM) from 1 assay(s)
Binding MOAD:  2QNN Ki: 70 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.48 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.170 
  • R-Value Observed: 0.170 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 57.384α = 90
b = 86.179β = 90
c = 46.29γ = 90
Software Package:
Software NamePurpose
SHELXmodel building
SHELXL-97refinement
MAR345dtbdata collection
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-04-15
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Non-polymer description, Version format compliance