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- EMDB-43935: HIV BG505.v5.2 (N289/N241) SOSIP Env in Complex with gp120-Interf... -

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Basic information

Entry
Database: EMDB / ID: EMD-43935
TitleHIV BG505.v5.2 (N289/N241) SOSIP Env in Complex with gp120-Interface pAb from Rh.33203
Map data
Sample
  • Complex: HIV-1 BG505 SOSIP Env in Complex with NHP Polyclonal Antibody - gp120-Interface Epitope
    • Protein or peptide: gp120-Interface Polyclonal Antibody - Predicted Heavy Chain
    • Protein or peptide: gp120-Interface Polyclonal Antibody - Predicted Light Chain
    • Protein or peptide: Surface protein gp120
    • Protein or peptide: Transmembrane protein gp41
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
KeywordsHIV / Polyclonal / Antibodies / CryoEMPEM / NHP / Macaque / gp120-Interface / VIRAL PROTEIN
Function / homology
Function and homology information


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 ...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
Envelope glycoprotein Gp160 / Retroviral envelope protein / Retroviral envelope protein GP41-like / Gp120 core superfamily / Envelope glycoprotein GP120 / Human immunodeficiency virus 1, envelope glycoprotein Gp120
Similarity search - Domain/homology
Envelope glycoprotein gp160
Similarity search - Component
Biological speciesMacaca mulatta (Rhesus monkey) / Human immunodeficiency virus 1
Methodsingle particle reconstruction / cryo EM / Resolution: 3.8 Å
AuthorsBrown S / Antansijevic A / Ward AB
Funding support United States, 3 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)R01 AI136621 United States
Bill & Melinda Gates FoundationINV-002916 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)UM1 AI100663 United States
CitationJournal: Sci Immunol / Year: 2025
Title: 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.
History
DepositionMar 6, 2024-
Header (metadata) releaseJan 29, 2025-
Map releaseJan 29, 2025-
UpdateJun 4, 2025-
Current statusJun 4, 2025Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_43935.png

Downloads & links

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Map

FileDownload / File: emd_43935.map.gz / Format: CCP4 / Size: 178 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.05 Å/pix.
x 360 pix.
= 376.2 Å		1.05 Å/pix.
x 360 pix.
= 376.2 Å		1.05 Å/pix.
x 360 pix.
= 376.2 Å

Surface

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Images are generated by Spider.

Voxel sizeX=Y=Z: 1.045 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.01
Minimum - Maximum-0.029966485 - 0.046187475
Average (Standard dev.)-0.0000150626975 (±0.0011049942)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions360360360
Spacing360360360
CellA=B=C: 376.19998 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_43935_msk_1.map
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Half map: #2

Fileemd_43935_half_map_1.map
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Half map: #1

Fileemd_43935_half_map_2.map
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Sample components

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Entire : HIV-1 BG505 SOSIP Env in Complex with NHP Polyclonal Antibody - g...

EntireName: HIV-1 BG505 SOSIP Env in Complex with NHP Polyclonal Antibody - gp120-Interface Epitope
Components
  • Complex: HIV-1 BG505 SOSIP Env in Complex with NHP Polyclonal Antibody - gp120-Interface Epitope
    • Protein or peptide: gp120-Interface Polyclonal Antibody - Predicted Heavy Chain
    • Protein or peptide: gp120-Interface Polyclonal Antibody - Predicted Light Chain
    • Protein or peptide: Surface protein gp120
    • Protein or peptide: Transmembrane protein gp41
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: HIV-1 BG505 SOSIP Env in Complex with NHP Polyclonal Antibody - g...

SupramoleculeName: HIV-1 BG505 SOSIP Env in Complex with NHP Polyclonal Antibody - gp120-Interface Epitope
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#4
Source (natural)Organism: Macaca mulatta (Rhesus monkey)

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Macromolecule #1: gp120-Interface Polyclonal Antibody - Predicted Heavy Chain

MacromoleculeName: gp120-Interface Polyclonal Antibody - Predicted Heavy Chain
type: protein_or_peptide / ID: 1 / Details: Unknown sequence of a polyclonal antibody. / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Macaca mulatta (Rhesus monkey)
Molecular weightTheoretical: 9.890183 KDa
SequenceString: (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(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)

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Macromolecule #2: gp120-Interface Polyclonal Antibody - Predicted Light Chain

MacromoleculeName: gp120-Interface Polyclonal Antibody - Predicted Light Chain
type: protein_or_peptide / ID: 2 / Details: Unknown sequence of a polyclonal antibody. / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Macaca mulatta (Rhesus monkey)
Molecular weightTheoretical: 8.954028 KDa
SequenceString: (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(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)

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Macromolecule #3: Surface protein gp120

MacromoleculeName: Surface protein gp120 / type: protein_or_peptide / ID: 3
Details: Sequence contains engineered SOSIP mutations. An expression tag and initiating methionine residue are present at the beginning of the sequence.
Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Human immunodeficiency virus 1
Molecular weightTheoretical: 57.775781 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MDAMKRGLCC VLLLCGAVFV SPSQEIHARF RRGARAENLW VTVYYGVPVW KDAETTLFCA SDAKAYETKK HNVWATHCCV PTDPNPQEI HLENVTEEFN MWKNNMVEQM HTDIISLWDQ SLKPCVKLTP LCVTLQCTNV TNNITDDMRG ELKNCSFNMT T ELRDKKQK ...String:
MDAMKRGLCC VLLLCGAVFV SPSQEIHARF RRGARAENLW VTVYYGVPVW KDAETTLFCA SDAKAYETKK HNVWATHCCV PTDPNPQEI HLENVTEEFN MWKNNMVEQM HTDIISLWDQ SLKPCVKLTP LCVTLQCTNV TNNITDDMRG ELKNCSFNMT T ELRDKKQK VYSLFYRLDV VQINENQGNR SNNSNKEYRL INCNTSAITQ ACPKVSFEPI PIHYCAPAGF AILKCKDKKF NG TGPCTNV STVQCTHGIK PVVSTQLLLN GSLAEEEVII RSENITNNAK NILVQLNESV QINCTRPNNN TRKSIRIGPG QWF YATGDI IGDIRQAHCN VSKATWNETL GKVVKQLRKH FGNNTIIRFA NSSGGDLEVT THSFNCGGEF FYCNTSGLFN STWI SNTSV QGSNSTGSND SITLPCRIKQ IINMWQRIGQ AMYAPPIQGV IRCVSNITGL ILTRDGGSTN STTETFRPGG GDMRD NWRS ELYKYKVVKI EPLGVAPTRC KRRVVGRRRR

UniProtKB: Envelope glycoprotein gp160

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Macromolecule #4: Transmembrane protein gp41

MacromoleculeName: Transmembrane protein gp41 / type: protein_or_peptide / ID: 4 / Details: Sequence contains engineered SOSIP mutations. / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Human immunodeficiency virus 1
Molecular weightTheoretical: 17.506963 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
RRAVGIGAVF LGFLGAAGST MGAASMTLTV QARNLLSGIV QQQSNLLRAP ECQQHLLKLT VWGIKQLQAR VLAVERYLRD QQLLGIWGC SGKLICCTNV PWNSTWSNRN LSEIWDNMTW LQWDKEISNY TQIIYGLLEE SQNQQEKNEQ DLLALD

UniProtKB: Envelope glycoprotein gp160

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Macromolecule #8: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 8 / Number of copies: 40 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

ChemComp-NAG:
2-acetamido-2-deoxy-beta-D-glucopyranose

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

Concentration7.5 mg/mL
BufferpH: 7.4
GridModel: Quantifoil R1.2/1.3 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 283 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Number real images: 5297 / Average electron dose: 49.4 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.6 µm / Nominal defocus min: 0.8 µm
Sample stageCooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: INSILICO MODEL / In silico model: Ab initio model generated using CryoSPARC.
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.8 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.0) / Number images used: 140230
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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