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Yorodumi- PDB-8fr6: Antibody vFP53.02 in complex with HIV-1 envelope trimer BG505 DS-SOSIP -
+Open data
-Basic information
Entry | Database: PDB / ID: 8fr6 | ||||||
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Title | Antibody vFP53.02 in complex with HIV-1 envelope trimer BG505 DS-SOSIP | ||||||
Components |
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Keywords | VIRAL PROTEIN/IMMUNE SYSTEM / fusion peptide envelope trimer murine antibody vFP1 class / ANTIVIRAL PROTEIN / VIRAL PROTEIN-IMMUNE SYSTEM complex | ||||||
Function / homology | Function and homology information positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / positive regulation of establishment of T cell polarity / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / viral protein processing / fusion of virus membrane with host plasma membrane / : / fusion of virus membrane with host endosome membrane / viral envelope ...positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / positive regulation of establishment of T cell polarity / host cell endosome membrane / clathrin-dependent endocytosis of virus by host cell / viral protein processing / fusion of virus membrane with host plasma membrane / : / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / apoptotic process / host cell plasma membrane / structural molecule activity / virion membrane / identical protein binding / plasma membrane Similarity search - Function | ||||||
Biological species | Human immunodeficiency virus 1 Mus musculus (house mouse) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.5 Å | ||||||
Authors | Wang, S. / Kwong, P.D. | ||||||
Funding support | United States, 1items
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Citation | Journal: J Virol / Year: 2023 Title: Diverse Murine Vaccinations Reveal Distinct Antibody Classes to Target Fusion Peptide and Variation in Peptide Length to Improve HIV Neutralization. Authors: Mallika Sastry / Anita Changela / Jason Gorman / Kai Xu / Gwo-Yu Chuang / Chen-Hsiang Shen / Cheng Cheng / Hui Geng / Sijy O'Dell / Li Ou / Reda Rawi / Mateo Reveiz / Guillaume B E Stewart- ...Authors: Mallika Sastry / Anita Changela / Jason Gorman / Kai Xu / Gwo-Yu Chuang / Chen-Hsiang Shen / Cheng Cheng / Hui Geng / Sijy O'Dell / Li Ou / Reda Rawi / Mateo Reveiz / Guillaume B E Stewart-Jones / Shuishu Wang / Baoshan Zhang / Tongqing Zhou / Andrea Biju / Michael Chambers / Xuejun Chen / Angela R Corrigan / Bob C Lin / Mark K Louder / Krisha McKee / Alexandra F Nazzari / Adam S Olia / Danealle K Parchment / Edward K Sarfo / Tyler Stephens / Jonathan Stuckey / Yaroslav Tsybovsky / Raffaello Verardi / Yiran Wang / Cheng-Yan Zheng / Yuling Chen / Nicole A Doria-Rose / Adrian B McDermott / John R Mascola / Peter D Kwong / Abstract: While neutralizing antibodies that target the HIV-1 fusion peptide have been elicited in mice by vaccination, antibodies reported thus far have been from only a single antibody class that could ...While neutralizing antibodies that target the HIV-1 fusion peptide have been elicited in mice by vaccination, antibodies reported thus far have been from only a single antibody class that could neutralize ~30% of HIV-1 strains. To explore the ability of the murine immune system to generate cross-clade neutralizing antibodies and to investigate how higher breadth and potency might be achieved, we tested 17 prime-boost regimens that utilized diverse fusion peptide-carrier conjugates and HIV-1 envelope trimers with different fusion peptides. We observed priming in mice with fusion peptide-carrier conjugates of variable peptide length to elicit higher neutralizing responses, a result we confirmed in guinea pigs. From vaccinated mice, we isolated 21 antibodies, belonging to 4 distinct classes of fusion peptide-directed antibodies capable of cross-clade neutralization. Top antibodies from each class collectively neutralized over 50% of a 208-strain panel. Structural analyses - both X-ray and cryo-EM - revealed each antibody class to recognize a distinct conformation of fusion peptide and to have a binding pocket capable of accommodating diverse fusion peptides. Murine vaccinations can thus elicit diverse neutralizing antibodies, and altering peptide length during prime can improve the elicitation of cross-clade responses targeting the fusion peptide site of HIV-1 vulnerability. The HIV-1 fusion peptide has been identified as a site for elicitation of broadly neutralizing antibodies, with prior studies demonstrating that priming with fusion peptide-based immunogens and boosting with soluble envelope (Env) trimers can elicit cross-clade HIV-1-neutralizing responses. To improve the neutralizing breadth and potency of fusion peptide-directed responses, we evaluated vaccine regimens that incorporated diverse fusion peptide-conjugates and Env trimers with variation in fusion peptide length and sequence. We found that variation in peptide length during prime elicits enhanced neutralizing responses in mice and guinea pigs. We identified vaccine-elicited murine monoclonal antibodies from distinct classes capable of cross-clade neutralization and of diverse fusion peptide recognition. Our findings lend insight into improved immunogens and regimens for HIV-1 vaccine development. | ||||||
History |
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-Structure visualization
Structure viewer | Molecule: MolmilJmol/JSmol |
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-Downloads & links
-Download
PDBx/mmCIF format | 8fr6.cif.gz | 545.9 KB | Display | PDBx/mmCIF format |
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PDB format | pdb8fr6.ent.gz | 446.7 KB | Display | PDB format |
PDBx/mmJSON format | 8fr6.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 8fr6_validation.pdf.gz | 4.5 MB | Display | wwPDB validaton report |
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Full document | 8fr6_full_validation.pdf.gz | 4.5 MB | Display | |
Data in XML | 8fr6_validation.xml.gz | 80.3 KB | Display | |
Data in CIF | 8fr6_validation.cif.gz | 122.3 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/fr/8fr6 ftp://data.pdbj.org/pub/pdb/validation_reports/fr/8fr6 | HTTPS FTP |
-Related structure data
Related structure data | 29396MC 8g85C 8g9wC 8g9xC 8g9yC 8gasC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data | Similarity search - Function & homologyF&H Search |
-Links
-Assembly
Deposited unit |
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Noncrystallographic symmetry (NCS) | NCS domain:
NCS domain segments:
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