5FRM

Crystal structure of the Prototype Foamy Virus (PFV) intasome in complex with magnesium and the INSTI XZ384 (compound 4a)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.58 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.186 

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Ligand Structure Quality Assessment 


This is version 1.4 of the entry. See complete history. 


Literature

HIV-1 Integrase Strand Transfer Inhibitors with Reduced Susceptibility to Drug Resistant Mutant Integrases.

Zhao, X.Z., Smith, S.J., Maskell, D.P., Metifiot, M., Pye, V.E., Fesen, K., Marchand, C., Pommier, Y., Cherepanov, P., Hughes, S.H., Burke, T.R.J.

(2016) ACS Chem Biol 11: 1074

  • DOI: https://doi.org/10.1021/acschembio.5b00948
  • Primary Citation of Related Structures:  
    5FRM, 5FRN, 5FRO

  • PubMed Abstract: 

    • HIV integrase (IN) strand transfer inhibitors (INSTIs) are among the newest anti-AIDS drugs; however, mutant forms of IN can confer resistance. We developed noncytotoxic naphthyridine-containing INSTIs that retain low nanomolar IC50 values against HIV-1 variants harboring all of the major INSTI-resistant mutations ...

    HIV integrase (IN) strand transfer inhibitors (INSTIs) are among the newest anti-AIDS drugs; however, mutant forms of IN can confer resistance. We developed noncytotoxic naphthyridine-containing INSTIs that retain low nanomolar IC50 values against HIV-1 variants harboring all of the major INSTI-resistant mutations. We found by analyzing crystal structures of inhibitors bound to the IN from the prototype foamy virus (PFV) that the most successful inhibitors show striking mimicry of the bound viral DNA prior to 3'-processing and the bound host DNA prior to strand transfer. Using this concept of "bi-substrate mimicry," we developed a new broadly effective inhibitor that not only mimics aspects of both the bound target and viral DNA but also more completely fills the space they would normally occupy. Maximizing shape complementarity and recapitulating structural components encompassing both of the IN DNA substrates could serve as a guiding principle for the development of new INSTIs.

    Organizational Affiliation: 

    Developmental Therapeutics Branch and Laboratory of Molecular Pharmacology, Center for Cancer Research, National Cancer Institute, National Institutes of Health , Bethesda, Maryland 20892, United States.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
PFV INTEGRASEA, B395Human spumaretrovirusMutation(s): 2 
Gene Names: pol
EC: 2.7.7.49 (UniProt), 2.7.7.7 (UniProt), 3.1.26.4 (UniProt), 3.4.23 (UniProt), 2.7.7 (UniProt), 3.1 (UniProt)
UniProt
Find proteins for P14350 (Human spumaretrovirus)
Explore P14350 
Go to UniProtKB:  P14350
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP14350
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsLengthOrganismImage
5'-D(*AP*TP*TP*GP*TP*CP*AP*TP*GP*GP*AP*AP*TP*TP *TP*CP*GP*CP*A)-3'C19synthetic construct
Protein Feature View
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  • Reference Sequence

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Entity ID: 3
MoleculeChainsLengthOrganismImage
5'-D(*TP*GP*CP*GP*AP*AP*AP*TP*TP*CP*CP*AP*TP*GP *AP*CP*A)-3'D17synthetic construct
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 6 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
WA5
Query on WA5
Download Ideal Coordinates CCD File 
V [auth D]4-azanylidene-N-[[2,4-bis(fluoranyl)phenyl]methyl]-1-oxidanyl-2-oxidanylidene-1,8-naphthyridine-3-carboxamide
C16 H12 F2 N4 O3
KQQAEMXQZXBXSU-MCMJHOFTSA-N		 Ligand Interaction
MES
Query on MES
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I [auth A]2-(N-MORPHOLINO)-ETHANESULFONIC ACID
C6 H13 N O4 S
SXGZJKUKBWWHRA-UHFFFAOYSA-N		 Ligand Interaction
SO4
Query on SO4
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H [auth A],
L [auth A],
M [auth A],
N [auth A],
R [auth B]		SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L		 Ligand Interaction
GOL
Query on GOL
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J [auth A],
K [auth A],
O [auth A],
P [auth A],
Q [auth A],
J [auth A],
K [auth A],
O [auth A],
P [auth A],
Q [auth A],
S [auth B],
T [auth B],
U [auth C]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N		 Ligand Interaction
ZN
Query on ZN
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E [auth A]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N		 Ligand Interaction
MG
Query on MG
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F [auth A],
G [auth A]		MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.58 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.185 
  • R-Value Observed: 0.186 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 159.737α = 90
b = 159.737β = 90
c = 123.528γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
Aimlessdata scaling
PHENIXphasing

Structure Validation

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Ligand Structure Quality Assessment 


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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-02-17
    Type: Initial release
  • Version 1.1: 2016-04-27
    Changes: Database references
  • Version 1.2: 2019-01-30
    Changes: Data collection, Experimental preparation, Other
  • Version 1.3: 2019-02-06
    Changes: Data collection, Experimental preparation
  • Version 1.4: 2019-04-10
    Changes: Data collection, Source and taxonomy