Structural basis of broad HIV neutralization by a vaccine-induced cow antibody
- The Scripps Research Inst., La Jolla, CA (United States). Dept. of Integrative Structural and Computational Biology. IAVI, Neutralizing Antibody Center. Scripps Consortium for HIV/AIDS Vaccine Development; OSTI
- The Scripps Research Inst., La Jolla, CA (United States). Dept. of Integrative Structural and Computational Biology. IAVI, Neutralizing Antibody Center. Scripps Consortium for HIV/AIDS Vaccine Development
- The Scripps Research Inst., La Jolla, CA (United States). Dept. of Molecular Medicine; Applied Biomedical Science Institute, San Diego, CA (United States); Taurus Biosciences LLC, San Diego, CA (United States)
- The Scripps Research Inst., La Jolla, CA (United States). IAVI, Neutralizing Antibody Center; Scripps Consortium for HIV/AIDS Vaccine Development; Dept. of Immunology and Microbiology
- The Scripps Research Inst., La Jolla, CA (United States). Dept. of Molecular Medicine; Applied Biomedical Science Institute, San Diego, CA (United States); Taurus Biosciences LLC, San Diego, CA (United States)
- The Scripps Research Inst., La Jolla, CA (United States). IAVI, Neutralizing Antibody Center; Scripps Consortium for HIV/AIDS Vaccine Development; Dept. of Immunology and Microbiology; Massachusetts Institute of Technology and Harvard University, Cambridge, MA (United States). Ragon Inst. of Massachusetts General Hospital
- The Scripps Research Inst., La Jolla, CA (United States). Dept. of Integrative Structural and Computational Biology. IAVI, Neutralizing Antibody Center. Scripps Consortium for HIV/AIDS Vaccine Development; Skaggs Institute for Chemical Biology
Potent broadly neutralizing antibodies (bnAbs) to HIV have been very challenging to elicit by vaccination in wild-type animals. Here, by x-ray crystallography, cryo–electron microscopy, and site-directed mutagenesis, we structurally and functionally elucidate the mode of binding of a potent bnAb (NC-Cow1) elicited in cows by immunization with the HIV envelope (Env) trimer BG505 SOSIP.664. The exceptionally long (60 residues) third complementarity-determining region of the heavy chain (CDR H3) of NC-Cow1 forms a mini domain (knob) on an extended stalk that navigates through the dense glycan shield on Env to target a small footprint on the gp120 CD4 receptor binding site with no contact of the other CDRs to the rest of the Env trimer. These findings illustrate, in molecular detail, how an unusual vaccine-induced cow bnAb to HIV Env can neutralize with high potency and breadth.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1816401
- Alternate ID(s):
- OSTI ID: 1833660
OSTI ID: 1837296
- Journal Information:
- Science Advances, Journal Name: Science Advances Journal Issue: 22 Vol. 6; ISSN 2375-2548
- Publisher:
- AAASCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Improving the Immunogenicity of Native-like HIV-1 Envelope Trimers by Hyperstabilization
Human CD4-binding site antibody elicited by polyvalent DNA prime-protein boost vaccine neutralizes cross-clade tier-2-HIV strains
Structure-Based Design of a Soluble Prefusion-Closed HIV-1 Env Trimer with Reduced CD4 Affinity and Improved Immunogenicity
Journal Article
·
Mon Aug 21 20:00:00 EDT 2017
· Cell Reports
·
OSTI ID:1499807
Human CD4-binding site antibody elicited by polyvalent DNA prime-protein boost vaccine neutralizes cross-clade tier-2-HIV strains
Journal Article
·
Mon May 20 20:00:00 EDT 2024
· Nature Communications
·
OSTI ID:2470333
Structure-Based Design of a Soluble Prefusion-Closed HIV-1 Env Trimer with Reduced CD4 Affinity and Improved Immunogenicity
Journal Article
·
Tue Mar 07 19:00:00 EST 2017
· Journal of Virology
·
OSTI ID:1357627