1EFN image
Entry Detail
PDB ID:
1EFN
Keywords:
COMPLEX (SH3 DOMAIN/VIRAL ENHANCER)
Title:
HIV-1 NEF PROTEIN IN COMPLEX WITH R96I MUTANT FYN SH3 DOMAIN
Biological Source:
Source Organism:
Homo sapiens, Human immunodeficiency virus 1
Host Organism:
Escherichia coli BL21(DE3)
PDB Version:
Deposition Date:
1996-06-29
Release Date:
1997-01-11
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.50 Å
R-Value Free:
0.28
R-Value Work:
0.21
R-Value Observed:
0.21
Space Group:
P 65 2 2
1EFN validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Description:FYN TYROSINE KINASE
Mutations:R96I
Chain IDs:A, C
Chain Length:59
Number of Molecules:2
Biological Source:Homo sapiens
UniProt ID:P06241 Pfam ID:PF00018
Protein Blast
Polymer Type:polypeptide(L)
Description:HIV-1 NEF PROTEIN
Mutations:T71R
Chain IDs:B, D
Chain Length:152
Number of Molecules:2
Biological Source:Human immunodeficiency virus 1
UniProt ID:P03406 Pfam ID:PF00469
Ligand Molecules
PBM
Primary Citation
Crystal structure of the conserved core of HIV-1 Nef complexed with a Src family SH3 domain.
Cell(Cambridge,Mass.) 85 931 942 (1996)
PMID: 8681387 DOI: 10.1016/S0092-8674(00)81276-3

Abstact

The crystal structure of the conserved core of HIV-1 Nef has been determined in complex with the SH3 domain of a mutant Fyn tyrosine kinase (a single amino acid substitution, Arg-96 to isoleucine), to which Nef binds tightly. The conserved PxxP sequence motif of Nef, known to be important for optimal viral replication, is part of a polyproline type II helix that engages the SH3 domain in a manner resembling closely the interaction of isolated peptides with SH3 domains. The Nef-SH3 structure also reveals how high affinity and specificity in the SH3 interaction is achieved by the presentation of the PxxP motif within the context of the folded structure of Nef.

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Primary Citation of related structures
1EFN