4IPZ

SmBz bound to Cyclophilin A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.67 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.174 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

HIV-1 evades innate immune recognition through specific cofactor recruitment.

Rasaiyaah, J.Tan, C.P.Fletcher, A.J.Price, A.J.Blondeau, C.Hilditch, L.Jacques, D.A.Selwood, D.L.James, L.C.Noursadeghi, M.Towers, G.J.

(2013) Nature 503: 402-405

  • DOI: 10.1038/nature12769
  • Primary Citation of Related Structures:  
    4IPZ

  • PubMed Abstract: 
  • Human immunodeficiency virus (HIV)-1 is able to replicate in primary human macrophages without stimulating innate immunity despite reverse transcription of genomic RNA into double-stranded DNA, an activity that might be expected to trigger innate pattern recognition receptors ...

    Human immunodeficiency virus (HIV)-1 is able to replicate in primary human macrophages without stimulating innate immunity despite reverse transcription of genomic RNA into double-stranded DNA, an activity that might be expected to trigger innate pattern recognition receptors. We reasoned that if correctly orchestrated HIV-1 uncoating and nuclear entry is important for evasion of innate sensors then manipulation of specific interactions between HIV-1 capsid and host factors that putatively regulate these processes should trigger pattern recognition receptors and stimulate type 1 interferon (IFN) secretion. Here we show that HIV-1 capsid mutants N74D and P90A, which are impaired for interaction with cofactors cleavage and polyadenylation specificity factor subunit 6 (CPSF6) and cyclophilins (Nup358 and CypA), respectively, cannot replicate in primary human monocyte-derived macrophages because they trigger innate sensors leading to nuclear translocation of NF-κB and IRF3, the production of soluble type 1 IFN and induction of an antiviral state. Depletion of CPSF6 with short hairpin RNA expression allows wild-type virus to trigger innate sensors and IFN production. In each case, suppressed replication is rescued by IFN-receptor blockade, demonstrating a role for IFN in restriction. IFN production is dependent on viral reverse transcription but not integration, indicating that a viral reverse transcription product comprises the HIV-1 pathogen-associated molecular pattern. Finally, we show that we can pharmacologically induce wild-type HIV-1 infection to stimulate IFN secretion and an antiviral state using a non-immunosuppressive cyclosporine analogue. We conclude that HIV-1 has evolved to use CPSF6 and cyclophilins to cloak its replication, allowing evasion of innate immune sensors and induction of a cell-autonomous innate immune response in primary human macrophages.


    Organizational Affiliation

    University College London, Medical Research Council Centre for Medical Molecular Virology, Division of Infection and Immunity, University College London, 90 Gower St, London WC1E 6BT, United Kingdom.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Peptidyl-prolyl cis-trans isomerase A A165Homo sapiensMutation(s): 0 
Gene Names: PPIACYPA
EC: 5.2.1.8
Find proteins for P62937 (Homo sapiens)
Explore P62937 
Go to UniProtKB:  P62937
NIH Common Fund Data Resources
PHAROS:  P62937
Protein Feature View
Expand
  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
cyclosporine SmBz-CsA B11Tolypocladium inflatumMutation(s): 1 
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download Ideal Coordinates CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Modified Residues  4 Unique
IDChainsTypeFormula2D DiagramParent
ABA
Query on ABA
BL-PEPTIDE LINKINGC4 H9 N O2ALA
BMT
Query on BMT
BL-PEPTIDE LINKINGC10 H19 N O3THR
MLE
Query on MLE
BL-PEPTIDE LINKINGC7 H15 N O2LEU
MVA
Query on MVA
BL-PEPTIDE LINKINGC6 H13 N O2VAL
Biologically Interesting Molecules (External Reference) 1 Unique
Entity ID: 2
IDChainsNameType/Class2D Diagram3D Interactions
PRD_001130
Query on PRD_001130
BSmBz, cyclosporin A derivativeCyclic peptide /  Inhibitor

--

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.67 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.172 
  • R-Value Observed: 0.174 
  • Space Group: I 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 54.18α = 90
b = 64.6β = 90
c = 80.07γ = 90
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction
MAR345dtbdata collection

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-11-06
    Type: Initial release
  • Version 1.1: 2013-12-04
    Changes: Database references
  • Version 1.2: 2018-08-29
    Changes: Data collection, Source and taxonomy, Structure summary