6OL6 image
Entry Detail
PDB ID:
6OL6
Keywords:
Title:
Structure of iglb12 scFv in complex with anti-idiotype ib2 Fab
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2019-04-15
Release Date:
2019-07-24
Method Details:
Experimental Method:
Resolution:
2.60 Å
R-Value Free:
0.23
R-Value Work:
0.17
R-Value Observed:
0.17
Space Group:
C 1 2 1
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:ib2 Heavy Chain
Chain IDs:A
Chain Length:227
Number of Molecules:1
Biological Source:Mus musculus
Polymer Type:polypeptide(L)
Description:ib2 Light Chain
Chain IDs:B
Chain Length:214
Number of Molecules:1
Biological Source:Mus musculus
Polymer Type:polypeptide(L)
Description:iglb12 Heavy Chain
Chain IDs:C (auth: H)
Chain Length:139
Number of Molecules:1
Biological Source:Homo sapiens
Polymer Type:polypeptide(L)
Description:iglb12 light chain
Chain IDs:D (auth: L)
Chain Length:113
Number of Molecules:1
Biological Source:Homo sapiens
Ligand Molecules
Primary Citation
Detection and activation of HIV broadly neutralizing antibody precursor B cells using anti-idiotypes.
J.Exp.Med. 216 2331 2347 (2019)
PMID: 31345930 DOI: 10.1084/jem.20190164

Abstact

Many tested vaccines fail to provide protection against disease despite the induction of antibodies that bind the pathogen of interest. In light of this, there is much interest in rationally designed subunit vaccines that direct the antibody response to protective epitopes. Here, we produced a panel of anti-idiotype antibodies able to specifically recognize the inferred germline version of the human immunodeficiency virus 1 (HIV-1) broadly neutralizing antibody b12 (iglb12). We determined the crystal structure of two anti-idiotypes in complex with iglb12 and used these anti-idiotypes to identify rare naive human B cells expressing B cell receptors with similarity to iglb12. Immunization with a multimerized version of this anti-idiotype induced the proliferation of transgenic murine B cells expressing the iglb12 heavy chain in vivo, despite the presence of deletion and anergy within this population. Together, our data indicate that anti-idiotypes are a valuable tool for the study and induction of potentially protective antibodies.

Legend

Protein

Chemical

Disease

Primary Citation of related structures