+
Open data
-
Basic information
| Entry | Database: PDB / ID: 7mxe | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Title | Ab1245 Fab in complex with BG505 SOSIP.664 and 8ANC195 Fab | |||||||||
Components |
| |||||||||
Keywords | ANTIVIRAL PROTEIN/VIRAL PROTEIN / VIRAL PROTEIN-IMMUNE SYSTEM complex / non-neutralizing / ANTIVIRAL PROTEIN / ANTIVIRAL PROTEIN-VIRAL PROTEIN complex | |||||||||
| Function / homology | Function and homology informationsymbiont-mediated perturbation of host defense response / positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / 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 ...symbiont-mediated perturbation of host defense response / positive regulation of plasma membrane raft polarization / positive regulation of receptor clustering / 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 / host cell plasma membrane / virion membrane / structural molecule activity / identical protein binding / membrane Similarity search - Function | |||||||||
| Biological species | Homo sapiens (human)![]() Human immunodeficiency virus 1![]() | |||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.7 Å | |||||||||
Authors | Abernathy, M.E. / Bjorkman, P.J. | |||||||||
| Funding support | United States, 2items
| |||||||||
Citation | Journal: NPJ Vaccines / Year: 2021Title: Antibody elicited by HIV-1 immunogen vaccination in macaques displaces Env fusion peptide and destroys a neutralizing epitope. Authors: Morgan E Abernathy / Harry B Gristick / Jost Vielmetter / Jennifer R Keeffe / Priyanthi N P Gnanapragasam / Yu E Lee / Amelia Escolano / Rajeev Gautam / Michael S Seaman / Malcolm A Martin / ...Authors: Morgan E Abernathy / Harry B Gristick / Jost Vielmetter / Jennifer R Keeffe / Priyanthi N P Gnanapragasam / Yu E Lee / Amelia Escolano / Rajeev Gautam / Michael S Seaman / Malcolm A Martin / Michel C Nussenzweig / Pamela J Bjorkman / ![]() Abstract: HIV-1 vaccine design aims to develop an immunogen that elicits broadly neutralizing antibodies against a desired epitope, while eliminating responses to off-target regions of HIV-1 Env. We report ...HIV-1 vaccine design aims to develop an immunogen that elicits broadly neutralizing antibodies against a desired epitope, while eliminating responses to off-target regions of HIV-1 Env. We report characterization of Ab1245, an off-target antibody against the Env gp120-gp41 interface, from V3-glycan patch immunogen-primed and boosted macaques. A 3.7 Å cryo-EM structure of an Ab1245-Env complex reveals one Ab1245 Fab binding asymmetrically to Env trimer at the gp120-gp41 interface using its long CDRH3 to mimic regions of gp41. The mimicry includes positioning of a CDRH3 methionine into the gp41 tryptophan clasp, resulting in displacement of the fusion peptide and fusion peptide-proximal region. Despite fusion peptide displacement, Ab1245 is non-neutralizing even at high concentrations, raising the possibility that only two fusion peptides per trimer are required for viral-host membrane fusion. These structural analyses facilitate immunogen design to prevent elicitation of Ab1245-like antibodies that block neutralizing antibodies against the fusion peptide. | |||||||||
| History |
|
-
Structure visualization
| Movie |
Movie viewer |
|---|---|
| Structure viewer | Molecule: Molmil Jmol/JSmol |
-
Downloads & links
-
Download
| PDBx/mmCIF format | 7mxe.cif.gz | 561.1 KB | Display | PDBx/mmCIF format |
|---|---|---|---|---|
| PDB format | pdb7mxe.ent.gz | 449.9 KB | Display | PDB format |
| PDBx/mmJSON format | 7mxe.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/mx/7mxe ftp://data.pdbj.org/pub/pdb/validation_reports/mx/7mxe | HTTPS FTP |
|---|
-Related structure data
| Related structure data | ![]() 24072MC M: map data used to model this data C: citing same article ( |
|---|---|
| Similar structure data |
-
Links
-
Assembly
| Deposited unit | ![]()
|
|---|---|
| 1 |
|
-
Components
-Protein , 2 types, 6 molecules CDFGJP
| #3: Protein | Mass: 17146.482 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Human immunodeficiency virus 1 / Gene: env / Cell (production host): CHO / Production host: ![]() #4: Protein | Mass: 53864.086 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Human immunodeficiency virus 1 / Gene: env / Cell (production host): CHO / Production host: ![]() |
|---|
-Antibody , 4 types, 8 molecules AHMBLORW
| #1: Antibody | Mass: 26153.283 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)#2: Antibody | Mass: 23460.047 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Production host: Homo sapiens (human)#5: Antibody | | Mass: 28154.803 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Homo sapiens (human)#6: Antibody | | Mass: 25306.172 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() Homo sapiens (human) |
|---|
-Sugars , 8 types, 55 molecules 
| #7: Polysaccharide | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose Source method: isolated from a genetically manipulated source #8: Polysaccharide | alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1- ...alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | Source method: isolated from a genetically manipulated source #9: Polysaccharide | alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D- ...alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | Source method: isolated from a genetically manipulated source #10: Polysaccharide | alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D- ...alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-6)]alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | Source method: isolated from a genetically manipulated source #11: Polysaccharide | Source method: isolated from a genetically manipulated source #12: Polysaccharide | Source method: isolated from a genetically manipulated source #13: Polysaccharide | beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose Source method: isolated from a genetically manipulated source #14: Sugar | ChemComp-NAG / |
|---|
-Details
| Has ligand of interest | N |
|---|---|
| Has protein modification | Y |
-Experimental details
-Experiment
| Experiment | Method: ELECTRON MICROSCOPY |
|---|---|
| EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-
Sample preparation
| Component |
| ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Molecular weight | Value: .5 MDa / Experimental value: NO | ||||||||||||||||||||||||||||||
| Source (natural) |
| ||||||||||||||||||||||||||||||
| Source (recombinant) |
| ||||||||||||||||||||||||||||||
| Buffer solution | pH: 8 | ||||||||||||||||||||||||||||||
| Buffer component |
| ||||||||||||||||||||||||||||||
| Specimen | Conc.: 4.7 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES Details: Ab1245 was incubated with BG505 SOSIP at room temperature for 3 hours, after which 8ANC195 Fab was added and the complex was incubated overnight at RT before SEC purification and concentration to 4.7 mg/mL. | ||||||||||||||||||||||||||||||
| Specimen support | Grid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R2/2 | ||||||||||||||||||||||||||||||
| Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 295 K Details: 0 blot force, 3 second blot time, 3 uL sample added |
-
Electron microscopy imaging
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
|---|---|
| Microscopy | Model: FEI TITAN KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 105000 X / Nominal defocus max: 2500 nm / Nominal defocus min: 800 nm |
| Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
| Image recording | Electron dose: 60 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) / Num. of grids imaged: 1 / Num. of real images: 2307 |
-
Processing
| EM software |
| ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||
| Particle selection | Num. of particles selected: 421388 | ||||||||||||||||||||||||||||||
| Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||||||||
| 3D reconstruction | Resolution: 3.7 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 172731 / Symmetry type: POINT | ||||||||||||||||||||||||||||||
| Atomic model building | Protocol: RIGID BODY FIT | ||||||||||||||||||||||||||||||
| Atomic model building | 3D fitting-ID: 1 / Source name: PDB / Type: experimental model
|
Movie
Controller
About Yorodumi




Homo sapiens (human)
Human immunodeficiency virus 1

United States, 2items
Citation
UCSF Chimera








PDBj








