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- EMDB-7622: Cryo-EM structure at 4.2 A resolution of vaccine-elicited antibod... -
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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-7622 | |||||||||
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Title | Cryo-EM structure at 4.2 A resolution of vaccine-elicited antibody vFP1.01 in complex with HIV-1 Env BG505 DS-SOSIP, and antibodies VRC03 and PGT122 | |||||||||
![]() | primary map | |||||||||
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Function / homology | ![]() 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 / virus-mediated perturbation of host defense response / 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 / virus-mediated perturbation of host defense response / 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 | ![]() ![]() ![]() ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 4.0 Å | |||||||||
![]() | Acharya P / Carragher B / Potter CS / Kwong PD | |||||||||
![]() | ![]() Title: Complete functional mapping of infection- and vaccine-elicited antibodies against the fusion peptide of HIV. Authors: Adam S Dingens / Priyamvada Acharya / Hugh K Haddox / Reda Rawi / Kai Xu / Gwo-Yu Chuang / Hui Wei / Baoshan Zhang / John R Mascola / Bridget Carragher / Clinton S Potter / Julie Overbaugh / ...Authors: Adam S Dingens / Priyamvada Acharya / Hugh K Haddox / Reda Rawi / Kai Xu / Gwo-Yu Chuang / Hui Wei / Baoshan Zhang / John R Mascola / Bridget Carragher / Clinton S Potter / Julie Overbaugh / Peter D Kwong / Jesse D Bloom / ![]() Abstract: Eliciting broadly neutralizing antibodies (bnAbs) targeting envelope (Env) is a major goal of HIV vaccine development, but cross-clade breadth from immunization has only sporadically been observed. ...Eliciting broadly neutralizing antibodies (bnAbs) targeting envelope (Env) is a major goal of HIV vaccine development, but cross-clade breadth from immunization has only sporadically been observed. Recently, Xu et al (2018) elicited cross-reactive neutralizing antibody responses in a variety of animal models using immunogens based on the epitope of bnAb VRC34.01. The VRC34.01 antibody, which was elicited by natural human infection, targets the N terminus of the Env fusion peptide, a critical component of the virus entry machinery. Here we precisely characterize the functional epitopes of VRC34.01 and two vaccine-elicited murine antibodies by mapping all single amino-acid mutations to the BG505 Env that affect viral neutralization. While escape from VRC34.01 occurred via mutations in both fusion peptide and distal interacting sites of the Env trimer, escape from the vaccine-elicited antibodies was mediated predominantly by mutations in the fusion peptide. Cryo-electron microscopy of four vaccine-elicited antibodies in complex with Env trimer revealed focused recognition of the fusion peptide and provided a structural basis for development of neutralization breadth. Together, these functional and structural data suggest that the breadth of vaccine-elicited antibodies targeting the fusion peptide can be enhanced by specific interactions with additional portions of Env. Thus, our complete maps of viral escape both delineate pathways of resistance to these fusion peptide-directed antibodies and provide a strategy to improve the breadth or potency of future vaccine-induced antibodies against Env's fusion peptide. | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 13.5 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 22.6 KB 22.6 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 13.6 KB | Display | ![]() |
Images | ![]() | 44.1 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6cufMC ![]() 7621C ![]() 6cueC M: atomic model generated by this map C: citing same article ( |
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Similar structure data |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Annotation | primary map | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.06 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
+Entire : vFP1.01-BG505 DS-SOSIP-VRC03-PGT122
+Supramolecule #1: vFP1.01-BG505 DS-SOSIP-VRC03-PGT122
+Supramolecule #2: PGT122
+Supramolecule #3: VRC03
+Supramolecule #4: vFP1.01
+Supramolecule #5: BG505 DS-SOSIP
+Macromolecule #1: vFP1.01 heavy chain
+Macromolecule #2: vFP1.01 Light chain
+Macromolecule #3: PGT122 Heavy chain
+Macromolecule #4: PGT122 light chain
+Macromolecule #5: VRC03 light chain
+Macromolecule #6: VRC03 heavy chain
+Macromolecule #7: Envelope glycoprotein gp120
+Macromolecule #8: Envelope glycoprotein gp41
+Macromolecule #15: 2-acetamido-2-deoxy-beta-D-glucopyranose
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 0.5 mg/mL |
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Buffer | pH: 7 |
Vitrification | Cryogen name: ETHANE / Instrument: SPOTITON |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Digitization - Frames/image: 1-40 / Number grids imaged: 1 / Number real images: 864 / Average electron dose: 70.28 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Calibrated defocus max: 3.0 µm / Calibrated defocus min: 1.5 µm / Calibrated magnification: 130000 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
-Atomic model buiding 1
Refinement | Space: REAL / Protocol: FLEXIBLE FIT / Overall B value: 142 / Target criteria: Correlation Coefficient |
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Output model | ![]() PDB-6cuf: |