3LEF image
Entry Detail
PDB ID:
3LEF
Keywords:
Title:
Crystal structure of HIV epitope-scaffold 4E10_S0_1Z6NA_001
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2010-01-14
Release Date:
2010-09-22
Method Details:
Experimental Method:
Resolution:
2.30 Å
R-Value Free:
0.29
R-Value Work:
0.25
R-Value Observed:
0.25
Space Group:
P 65 2 2
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Uncharacterized protein 4E10_S0_1Z6NA_001 (T18)
Chain IDs:A
Chain Length:172
Number of Molecules:1
Biological Source:ARTIFICIAL GENE
Ligand Molecules
Primary Citation
Computational Design of Epitope-Scaffolds Allows Induction of Antibodies Specific for a Poorly Immunogenic HIV Vaccine Epitope.
Structure 18 1116 1126 (2010)
PMID: 20826338 DOI: 10.1016/j.str.2010.06.010

Abstact

Broadly cross-reactive monoclonal antibodies define epitopes for vaccine development against HIV and other highly mutable viruses. Crystal structures are available for several such antibody-epitope complexes, but methods are needed to translate that structural information into immunogens that re-elicit similar antibodies. We describe a general computational method to design epitope-scaffolds in which contiguous structural epitopes are transplanted to scaffold proteins for conformational stabilization and immune presentation. Epitope-scaffolds designed for the poorly immunogenic but conserved HIV epitope 4E10 exhibited high epitope structural mimicry, bound with higher affinities to monoclonal antibody (mAb) 4E10 than the cognate peptide, and inhibited HIV neutralization by HIV+ sera. Rabbit immunization with an epitope-scaffold induced antibodies with structural specificity highly similar to mAb 4E10, an important advance toward elicitation of neutralizing activity. The results demonstrate that computationally designed epitope-scaffolds are valuable as structure-specific serological reagents and as immunogens to elicit antibodies with predetermined structural specificity.

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