4U0A

Hexameric HIV-1 CA in complex with CPSF6 peptide, P6 crystal form


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.215 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Host Cofactors and Pharmacologic Ligands Share an Essential Interface in HIV-1 Capsid That Is Lost upon Disassembly.

Price, A.J.Jacques, D.A.McEwan, W.A.Fletcher, A.J.Essig, S.Chin, J.W.Halambage, U.D.Aiken, C.James, L.C.

(2014) PLoS Pathog 10: e1004459-e1004459

  • DOI: https://doi.org/10.1371/journal.ppat.1004459
  • Primary Citation of Related Structures:  
    4U0A, 4U0B, 4U0C, 4U0D, 4U0E, 4U0F

  • PubMed Abstract: 

    The HIV-1 capsid is involved in all infectious steps from reverse transcription to integration site selection, and is the target of multiple host cell and pharmacologic ligands. However, structural studies have been limited to capsid monomers (CA), and the mechanistic basis for how these ligands influence infection is not well understood. Here we show that a multi-subunit interface formed exclusively within CA hexamers mediates binding to linear epitopes within cellular cofactors NUP153 and CPSF6, and is competed for by the antiretroviral compounds PF74 and BI-2. Each ligand is anchored via a shared phenylalanine-glycine (FG) motif to a pocket within the N-terminal domain of one monomer, and all but BI-2 also make essential interactions across the N-terminal domain: C-terminal domain (NTD:CTD) interface to a second monomer. Dissociation of hexamer into CA monomers prevents high affinity interaction with CPSF6 and PF74, and abolishes binding to NUP153. The second interface is conformationally dynamic, but binding of NUP153 or CPSF6 peptides is accommodated by only one conformation. NUP153 and CPSF6 have overlapping binding sites, but each makes unique CA interactions that, when mutated selectively, perturb cofactor dependency. These results reveal that multiple ligands share an overlapping interface in HIV-1 capsid that is lost upon viral disassembly.


  • Organizational Affiliation

    Medical Research Council Laboratory of Molecular Biology, Division of Protein and Nucleic Acid Chemistry, Cambridge, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Capsid protein p24231Human immunodeficiency virus type 1 (NEW YORK-5 ISOLATE)Mutation(s): 4 
Gene Names: gag
UniProt
Find proteins for P12493 (Human immunodeficiency virus type 1 group M subtype B (isolate NY5))
Explore P12493 
Go to UniProtKB:  P12493
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP12493
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Cleavage and polyadenylation specificity factor subunit 615Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q16630 (Homo sapiens)
Explore Q16630 
Go to UniProtKB:  Q16630
PHAROS:  Q16630
GTEx:  ENSG00000111605 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ16630
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download Ideal Coordinates CCD File 
C [auth A]CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.213 
  • R-Value Observed: 0.215 
  • Space Group: P 6
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 91.549α = 90
b = 91.549β = 90
c = 57.001γ = 120
Software Package:
Software NamePurpose
SCALAdata scaling
PDB_EXTRACTdata extraction
PHASERphasing
REFMACrefinement
iMOSFLMdata reduction
MOSFLMdata reduction

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2014-11-12
    Type: Initial release
  • Version 1.1: 2023-12-20
    Changes: Data collection, Database references, Derived calculations, Refinement description