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Yorodumi- EMDB-43968: HIV 16055.v8.3 SOSIP Env in Complex with Base and N611 Epitope pA... -
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Basic information
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| Title | HIV 16055.v8.3 SOSIP Env in Complex with Base and N611 Epitope pAbs from Rabbit 2463 | |||||||||
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Keywords | HIV / Polyclonal / Antibodies / CryoEMPEM / Rabbit / N611 / Base / VIRAL PROTEIN | |||||||||
| Function / homology | Function and homology informationpositive 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 ...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 / membrane Similarity search - Function | |||||||||
| Biological species | ![]() ![]() Human immunodeficiency virus 1 | |||||||||
| Method | single particle reconstruction / cryo EM / Resolution: 3.8 Å | |||||||||
Authors | Brown S / Antansijevic A / Ward AB | |||||||||
| Funding support | United States, 2 items
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Citation | Journal: Sci Immunol / Year: 2025Title: Anti-immune complex antibodies are elicited during repeated immunization with HIV Env immunogens. Authors: Sharidan Brown / Aleksandar Antanasijevic / Leigh M Sewall / Daniel Montiel Garcia / James Ferguson / Philip J M Brouwer / Rogier W Sanders / Andrew B Ward / ![]() Abstract: Vaccination strategies against HIV-1 aim to elicit broadly neutralizing antibodies (bnAbs) using prime-boost regimens with HIV envelope (Env) immunogens. Epitope mapping has shown that early antibody ...Vaccination strategies against HIV-1 aim to elicit broadly neutralizing antibodies (bnAbs) using prime-boost regimens with HIV envelope (Env) immunogens. Epitope mapping has shown that early antibody responses are directed to easily accessible nonneutralizing epitopes on Env instead of bnAb epitopes. Autologously neutralizing antibody responses appear upon boosting, once immunodominant epitopes are saturated. Here, we use electron microscopy-based polyclonal epitope mapping (EMPEM) to elucidate how repeated immunization with HIV Env SOSIP immunogens results in the generation of Ab2α anti-idiotypic antibodies in rabbits and rhesus macaques. We present the structures of six anti-immune complex antibodies and find that they target idiotopes composed of framework regions of antibodies bound to Env. Examination of cryo-electron microscopy density enabled prediction of sequences for an anti-immune complex antibody, the paratope of which is enriched with aromatic amino acids. This work sheds light on current vaccine development efforts for HIV, as well as for other pathogens in which repeated exposure to antigen is required. | |||||||||
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Structure visualization
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Downloads & links
-EMDB archive
| Map data | emd_43968.map.gz | 390.3 MB | EMDB map data format | |
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| Header (meta data) | emd-43968-v30.xml emd-43968.xml | 26.1 KB 26.1 KB | Display Display | EMDB header |
| FSC (resolution estimation) | emd_43968_fsc.xml | 17.1 KB | Display | FSC data file |
| Images | emd_43968.png | 65.4 KB | ||
| Masks | emd_43968_msk_1.map | 421.9 MB | Mask map | |
| Filedesc metadata | emd-43968.cif.gz | 7.4 KB | ||
| Others | emd_43968_half_map_1.map.gz emd_43968_half_map_2.map.gz | 337.6 MB 337.5 MB | ||
| Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-43968 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-43968 | HTTPS FTP |
-Validation report
| Summary document | emd_43968_validation.pdf.gz | 1.1 MB | Display | EMDB validaton report |
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| Full document | emd_43968_full_validation.pdf.gz | 1.1 MB | Display | |
| Data in XML | emd_43968_validation.xml.gz | 24.4 KB | Display | |
| Data in CIF | emd_43968_validation.cif.gz | 32.2 KB | Display | |
| Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-43968 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-43968 | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 9axkMC ![]() 9atzC ![]() 9axdC ![]() 9axiC ![]() 9ay6C ![]() 9aysC ![]() 9ayvC M: atomic model generated by this map C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
| EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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| Related items in Molecule of the Month |
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Map
| File | Download / File: emd_43968.map.gz / Format: CCP4 / Size: 421.9 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
| Voxel size | X=Y=Z: 0.8015 Å | ||||||||||||||||||||||||||||||||||||
| Density |
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| Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
| Details | EMDB XML:
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-Supplemental data
-Mask #1
| File | emd_43968_msk_1.map | ||||||||||||
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-Half map: #2
| File | emd_43968_half_map_1.map | ||||||||||||
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-Half map: #1
| File | emd_43968_half_map_2.map | ||||||||||||
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Sample components
-Entire : HIV-1 16055 SOSIP Env in Complex with Rabbit Polyclonal Antibodie...
| Entire | Name: HIV-1 16055 SOSIP Env in Complex with Rabbit Polyclonal Antibodies - Base and N611 pAbs |
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| Components |
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-Supramolecule #1: HIV-1 16055 SOSIP Env in Complex with Rabbit Polyclonal Antibodie...
| Supramolecule | Name: HIV-1 16055 SOSIP Env in Complex with Rabbit Polyclonal Antibodies - Base and N611 pAbs type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#6 |
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| Source (natural) | Organism: ![]() |
-Macromolecule #1: Surface protein gp120
| Macromolecule | Name: Surface protein gp120 / type: protein_or_peptide / ID: 1 Details: The sequence contains engineered SOSIP mutations. The sequence begins with an expression tag and initiating methionine residue. Number of copies: 3 / Enantiomer: LEVO |
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| Source (natural) | Organism: ![]() Human immunodeficiency virus 1 |
| Molecular weight | Theoretical: 58.156312 KDa |
| Recombinant expression | Organism: Homo sapiens (human) |
| Sequence | String: MDAMKRGLCC VLLLCGAVFV SPSQEIHARF RRGARNGNLW VTVYYGVPVW KDAETTLFCA SDAKAYEKEK RNVWATHCCV PTDPNPQEM VLENVTENFN MWKNDMVEQM HEDVISLWDQ SLKPCVKLTP LCVTLECRQV NTTNATSSVN VTNGEEIKNC S FNATTELR ...String: MDAMKRGLCC VLLLCGAVFV SPSQEIHARF RRGARNGNLW VTVYYGVPVW KDAETTLFCA SDAKAYEKEK RNVWATHCCV PTDPNPQEM VLENVTENFN MWKNDMVEQM HEDVISLWDQ SLKPCVKLTP LCVTLECRQV NTTNATSSVN VTNGEEIKNC S FNATTELR DKKQKVYALF YRLDIVPLEE ERKGNSSKYR LINCNTSAIT QACPKVTFDP IPIHYCAPAG YAILKCNNKT FN GTGPCNN VSTVQCTHGI KPVVSTQLLL NGSLAEGEII IRSENLTNNV KTIIVHLNES VEIVCTRPNN NTVKSIRIGP GQW FYYTGD IIGNIRQAYC NIKKDDWIRT LQRVGKKLAE HFPRRIINFT QPAGGDLEIT THSFNCRGEF FYCNTSSLFN STYN PNDTN SNSSSSNSSL DITIPCRIKQ IINMWQRVGQ AMYAPPIEGN ITCKSNITGL LLVRDGGVES NETEIFRPGG GDMRN NWRS ELYKYKVVEI KPLGIAPTRC KRRVVERRRR UniProtKB: Envelope glycoprotein gp160 |
-Macromolecule #2: Rabbit Base Epitope Polyclonal Antibody - Predicted Light Chain
| Macromolecule | Name: Rabbit Base Epitope Polyclonal Antibody - Predicted Light Chain type: protein_or_peptide / ID: 2 Details: This polyclonal antibody has an unknown sequence and is modeled as a poly-UNK chain. Number of copies: 1 / Enantiomer: LEVO |
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| Source (natural) | Organism: ![]() |
| Molecular weight | Theoretical: 9.294448 KDa |
| Sequence | String: (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) ...String: (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) |
-Macromolecule #3: Rabbit Base Epitope Polyclonal Antibody - Predicted Heavy Chain
| Macromolecule | Name: Rabbit Base Epitope Polyclonal Antibody - Predicted Heavy Chain type: protein_or_peptide / ID: 3 Details: This polyclonal antibody has an unknown sequence and is modeled as a poly-UNK chain. Number of copies: 1 / Enantiomer: LEVO |
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| Source (natural) | Organism: ![]() |
| Molecular weight | Theoretical: 10.571022 KDa |
| Sequence | String: (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) ...String: (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) |
-Macromolecule #4: Rabbit N611 Epitope Polyclonal Antibody - Predicted Light Chain
| Macromolecule | Name: Rabbit N611 Epitope Polyclonal Antibody - Predicted Light Chain type: protein_or_peptide / ID: 4 Details: This polyclonal antibody has an unknown sequence and is modeled as a poly-UNK chain. Number of copies: 1 / Enantiomer: LEVO |
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| Source (natural) | Organism: ![]() |
| Molecular weight | Theoretical: 8.868924 KDa |
| Sequence | String: (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) ...String: (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) |
-Macromolecule #5: Rabbit N611 Epitope Polyclonal Antibody - Predicted Heavy Chain
| Macromolecule | Name: Rabbit N611 Epitope Polyclonal Antibody - Predicted Heavy Chain type: protein_or_peptide / ID: 5 Details: This polyclonal antibody has an unknown sequence and is modeled as a poly-UNK chain. Number of copies: 1 / Enantiomer: LEVO |
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| Source (natural) | Organism: ![]() |
| Molecular weight | Theoretical: 9.549763 KDa |
| Sequence | String: (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) ...String: (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) |
-Macromolecule #6: Transmembrane protein gp41
| Macromolecule | Name: Transmembrane protein gp41 / type: protein_or_peptide / ID: 6 / Details: This sequence contains engineered SOSIP mutations. / Number of copies: 3 / Enantiomer: LEVO |
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| Source (natural) | Organism: ![]() Human immunodeficiency virus 1 |
| Molecular weight | Theoretical: 17.430652 KDa |
| Recombinant expression | Organism: Homo sapiens (human) |
| Sequence | String: RRAVGLGAVS FGFLGAAGST MGAASITLTV QARQLLSGIV QQQSNLLKAP ECQQHLLQDG HWGIKQLQTR VLAIEHYLKD QQLLGIWGC SGKLICCTAV PWNSSWSNKS HDEIWGNMTW MQWDREISNY TNTIYRLLED SQNQQEQNEK DLLALD UniProtKB: Envelope glycoprotein gp160 |
-Macromolecule #10: 2-acetamido-2-deoxy-beta-D-glucopyranose
| Macromolecule | Name: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 10 / Number of copies: 31 / Formula: NAG |
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| Molecular weight | Theoretical: 221.208 Da |
| Chemical component information | ![]() ChemComp-NAG: |
-Experimental details
-Structure determination
| Method | cryo EM |
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Processing | single particle reconstruction |
| Aggregation state | particle |
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Sample preparation
| Concentration | 4.2 mg/mL |
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| Buffer | pH: 7.4 |
| Grid | Model: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 400 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE |
| Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 283 K / Instrument: FEI VITROBOT MARK IV |
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Electron microscopy
| Microscope | TFS KRIOS |
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| Image recording | Film or detector model: GATAN K3 (6k x 4k) / Detector mode: COUNTING / Number real images: 3798 / Average electron dose: 40.3 e/Å2 |
| Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
| Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.8 µm |
| Sample stage | Cooling holder cryogen: NITROGEN |
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Keywords

Human immunodeficiency virus 1
Authors
United States, 2 items
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Homo sapiens (human)
Processing
FIELD EMISSION GUN

