3RBB

HIV-1 NEF protein in complex with engineered HCK SH3 domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.206 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Conformation of the Dileucine-Based Sorting Motif in HIV-1 Nef Revealed by Intermolecular Domain Assembly.

Horenkamp, F.A.Breuer, S.Schulte, A.Lulf, S.Weyand, M.Saksela, K.Geyer, M.

(2011) Traffic 12: 867-877

  • DOI: https://doi.org/10.1111/j.1600-0854.2011.01205.x
  • Primary Citation of Related Structures:  
    3RBB

  • PubMed Abstract: 

    The human immunodeficiency virus 1 (HIV-1) Nef protein is a pathogenicity factor required for effective progression to AIDS, which modulates host cell signaling pathways and T-cell receptor internalization. We have determined the crystal structure of Nef, allele SF2, in complex with an engineered SH3 domain of human Hck showing unnaturally tight binding and inhibitory potential toward Nef. This complex provides the most complete Nef structure described today, and explains the structural basis of the high affinity of this interaction. Intriguingly, the 33-residue C-terminal flexible loop is resolved in the structure by its interactions with a highly conserved hydrophobic groove on the core domain of an adjacent Nef molecule. The loop mediates the interaction of Nef with the cellular adaptor protein machinery for the stimulated internalization of surface receptors. The endocytic dileucine-based sorting motif is exposed at the tip of the acidic loop, giving the myristoylated Nef protein a distinctly dipolar character. The intermolecular domain assembly of Nef provides insights into a possible regulation mechanism for cargo trafficking.


  • Organizational Affiliation

    Abteilung Physikalische Biochemie, Max-Planck-Institut für molekulare Physiologie, Otto-Hahn-Strasse 11, 44227 Dortmund, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Protein Nef
A, C
166HIV-1 M:B_ARV2/SF2Mutation(s): 4 
Gene Names: HIV-1 Nefnef
Membrane Entity: Yes 
UniProt
Find proteins for P03407 (Human immunodeficiency virus type 1 group M subtype B (isolate ARV2/SF2))
Explore P03407 
Go to UniProtKB:  P03407
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP03407
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Tyrosine-protein kinase HCK
B, D
61Homo sapiensMutation(s): 6 
Gene Names: HCK
EC: 2.7.10.2
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for P08631 (Homo sapiens)
Explore P08631 
Go to UniProtKB:  P08631
PHAROS:  P08631
GTEx:  ENSG00000101336 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP08631
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.245 
  • R-Value Work: 0.204 
  • R-Value Observed: 0.206 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 43.19α = 90
b = 90.88β = 90
c = 169.53γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
REFMACrefinement
XDSdata reduction
XSCALEdata scaling
REFMACphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-04-27
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2023-09-13
    Changes: Data collection, Database references, Derived calculations, Refinement description