HIV-1 Integrase Catalytic Core Domain and C-Terminal Domain in Complex with Allosteric Integrase Inhibitor MUT871

Experimental Data Snapshot

  • Resolution: 1.70 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.168 

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Biological and Structural Analyses of New Potent Allosteric Inhibitors of HIV-1 Integrase.

Bonnard, D.Le Rouzic, E.Singer, M.R.Yu, Z.Le Strat, F.Batisse, C.Batisse, J.Amadori, C.Chasset, S.Pye, V.E.Emiliani, S.Ledoussal, B.Ruff, M.Moreau, F.Cherepanov, P.Benarous, R.

(2023) Antimicrob Agents Chemother 67: e0046223-e0046223

  • DOI: https://doi.org/10.1128/aac.00462-23
  • Primary Citation of Related Structures:  
    8BV2, 8CBR, 8CBS, 8CBT, 8CBU, 8CBV

  • PubMed Abstract: 

    HIV-1 integrase-LEDGF allosteric inhibitors (INLAIs) share the binding site on the viral protein with the host factor LEDGF/p75. These small molecules act as molecular glues promoting hyper-multimerization of HIV-1 IN protein to severely perturb maturation of viral particles. Herein, we describe a new series of INLAIs based on a benzene scaffold that display antiviral activity in the single digit nanomolar range. Akin to other compounds of this class, the INLAIs predominantly inhibit the late stages of HIV-1 replication. A series of high-resolution crystal structures revealed how these small molecules engage the catalytic core and the C-terminal domains of HIV-1 IN. No antagonism was observed between our lead INLAI compound BDM-2 and a panel of 16 clinical antiretrovirals. Moreover, we show that compounds retained high antiviral activity against HIV-1 variants resistant to IN strand transfer inhibitors and other classes of antiretroviral drugs. The virologic profile of BDM-2 and the recently completed single ascending dose phase I trial (ClinicalTrials.gov identifier: NCT03634085) warrant further clinical investigation for use in combination with other antiretroviral drugs. Moreover, our results suggest routes for further improvement of this emerging drug class.

  • Organizational Affiliation

    Biodim, Romainville, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C, D
233Human immunodeficiency virus 1Mutation(s): 2 
Gene Names: gag-pol
EC: 2.7.7 (PDB Primary Data), 3.1 (PDB Primary Data)
Find proteins for P12497 (Human immunodeficiency virus type 1 group M subtype B (isolate NY5))
Explore P12497 
Go to UniProtKB:  P12497
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP12497
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
U5L (Subject of Investigation/LOI)
Query on U5L

Download Ideal Coordinates CCD File 
L [auth B],
P [auth D]
(2~{S})-2-[3-cyclopropyl-6-methyl-2-(5-methyl-3,4-dihydro-2~{H}-chromen-6-yl)phenyl]-2-[(2-methylpropan-2-yl)oxy]ethanoic acid
C26 H32 O4
Query on EDO

Download Ideal Coordinates CCD File 
E [auth A]
F [auth A]
H [auth B]
I [auth B]
J [auth B]
E [auth A],
F [auth A],
H [auth B],
I [auth B],
J [auth B],
K [auth B],
N [auth C],
O [auth C],
Q [auth D],
R [auth D],
S [auth D],
T [auth D],
U [auth D],
W [auth D]
C2 H6 O2
Query on CL

Download Ideal Coordinates CCD File 
Query on MG

Download Ideal Coordinates CCD File 
M [auth B],
V [auth D]
Experimental Data & Validation

Experimental Data

  • Resolution: 1.70 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.167 
  • R-Value Observed: 0.168 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.228α = 90
b = 64.853β = 101.5
c = 70.439γ = 90
Software Package:
Software NamePurpose
DIALSdata reduction
DIALSdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Cancer Research UKUnited KingdomFC001061
Medical Research Council (MRC, United Kingdom)United KingdomFC001061
Wellcome TrustUnited KingdomFC001061
The Francis Crick InstituteUnited KingdomFC001061

Revision History  (Full details and data files)

  • Version 1.0: 2023-06-07
    Type: Initial release
  • Version 1.1: 2023-06-14
    Changes: Structure summary
  • Version 1.2: 2023-06-21
    Changes: Database references
  • Version 1.3: 2023-07-26
    Changes: Database references
  • Version 1.4: 2024-06-19
    Changes: Data collection