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- EMDB-40810: BG505 Boost2 SOSIP.664 in complex with NHP polyclonal antibody FP1 -

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Basic information

Entry
Database: EMDB / ID: EMD-40810
TitleBG505 Boost2 SOSIP.664 in complex with NHP polyclonal antibody FP1
Map datasharpened map
Sample
  • Complex: BG505 Boost 2 in complex with NHP Polyclonal Antibody FP1
    • Protein or peptide: BG505 Boost 2 gp120
    • Protein or peptide: BG505 Boost 2 gp41
    • Protein or peptide: FP1 heavy chain
    • Protein or peptide: FP1 light chain
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
KeywordsHIV-1 / Env / NHP / Antibody / Fusion Peptide / Polyclonal / VIRAL PROTEIN / VIRAL PROTEIN-Immune System complex
Biological speciesHuman immunodeficiency virus 1 / Macaca mulatta (Rhesus monkey)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.73 Å
AuthorsPratap PP / Antansijevic A / Ozorowski G / 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
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)UM1AI10066 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)UM1 AI144462 United States
CitationJournal: bioRxiv / Year: 2023
Title: Focusing antibody responses to the fusion peptide in rhesus macaques.
Authors: Christopher A Cottrell / Payal P Pratap / Kimberly M Cirelli / Diane G Carnathan / Chiamaka A Enemuo / Aleksandar Antanasijevic / Gabriel Ozorowski / Leigh M Sewall / Hongmei Gao / Kelli M ...Authors: Christopher A Cottrell / Payal P Pratap / Kimberly M Cirelli / Diane G Carnathan / Chiamaka A Enemuo / Aleksandar Antanasijevic / Gabriel Ozorowski / Leigh M Sewall / Hongmei Gao / Kelli M Greene / Joel D Allen / Julia T Ngo / Yury Choe / Bartek Nogal / Murillo Silva / Jinal Bhiman / Matthias Pauthner / Darrell J Irvine / David Montefiori / Max Crispin / Dennis R Burton / Guido Silvestri / Shane Crotty / Andrew B Ward /
Abstract: Immunodominance of antibodies targeting non-neutralizing epitopes and the high level of somatic hypermutation within germinal centers (GCs) required for most HIV broadly neutralizing antibodies ...Immunodominance of antibodies targeting non-neutralizing epitopes and the high level of somatic hypermutation within germinal centers (GCs) required for most HIV broadly neutralizing antibodies (bnAbs) are major impediments to the development of an effective HIV vaccine. Rational protein vaccine design and non-conventional immunization strategies are potential avenues to overcome these hurdles. Here, we report using implantable osmotic pumps to continuously deliver a series of epitope-targeted immunogens to rhesus macaques over the course of six months to elicit immune responses against the conserved fusion peptide. Antibody specificities and GC responses were tracked longitudinally using electron microscopy polyclonal epitope mapping (EMPEM) and lymph node fine-needle aspirates, respectively. Application of cryoEMPEM delineated key residues for on-target and off-target responses that can drive the next round of structure-based vaccine design.
History
DepositionMay 17, 2023-
Header (metadata) releaseJul 26, 2023-
Map releaseJul 26, 2023-
UpdateMay 21, 2025-
Current statusMay 21, 2025Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_40810.png

Downloads & links

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Map

FileDownload / File: emd_40810.map.gz / Format: CCP4 / Size: 178 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationsharpened map
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.03 Å/pix.
x 360 pix.
= 371.16 Å		1.03 Å/pix.
x 360 pix.
= 371.16 Å		1.03 Å/pix.
x 360 pix.
= 371.16 Å

Surface

Projections

Slices (1/3)

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Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.031 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.01
Minimum - Maximum-0.04463578 - 0.07208977
Average (Standard dev.)0.0000111596655 (±0.0018282575)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions360360360
Spacing360360360
CellA=B=C: 371.16 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_40810_msk_1.map
Projections & Slices
AxesZYX

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Histogram

Histogram (log scale)

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Half map: half map2

Fileemd_40810_half_map_1.map
Annotationhalf map2
Projections & Slices
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Histogram

Histogram (log scale)

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Half map: half map 1

Fileemd_40810_half_map_2.map
Annotationhalf map 1
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Sample components

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Entire : BG505 Boost 2 in complex with NHP Polyclonal Antibody FP1

EntireName: BG505 Boost 2 in complex with NHP Polyclonal Antibody FP1
Components
  • Complex: BG505 Boost 2 in complex with NHP Polyclonal Antibody FP1
    • Protein or peptide: BG505 Boost 2 gp120
    • Protein or peptide: BG505 Boost 2 gp41
    • Protein or peptide: FP1 heavy chain
    • Protein or peptide: FP1 light chain
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: BG505 Boost 2 in complex with NHP Polyclonal Antibody FP1

SupramoleculeName: BG505 Boost 2 in complex with NHP Polyclonal Antibody FP1
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #3-#4, #1-#2
Source (natural)Organism: Human immunodeficiency virus 1
Molecular weightTheoretical: 470 KDa

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Macromolecule #1: FP1 heavy chain

MacromoleculeName: FP1 heavy chain / type: protein_or_peptide / ID: 1
Details: The antibody sequence is not known as it is was directly isolated from macaque serum from blood draws in a polyclonal antibody sample.
Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Macaca mulatta (Rhesus monkey)
Molecular weightTheoretical: 10.656127 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)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)

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Macromolecule #2: FP1 light chain

MacromoleculeName: FP1 light chain / type: protein_or_peptide / ID: 2
Details: The antibody sequence is not known as it is was directly isolated from macaque serum from blood draws in a polyclonal antibody sample.
Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Macaca mulatta (Rhesus monkey)
Molecular weightTheoretical: 9.124238 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)

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Macromolecule #3: BG505 Boost 2 gp120

MacromoleculeName: BG505 Boost 2 gp120 / type: protein_or_peptide / ID: 3 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Human immunodeficiency virus 1
Molecular weightTheoretical: 58.090172 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 RR

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Macromolecule #4: BG505 Boost 2 gp41

MacromoleculeName: BG505 Boost 2 gp41 / type: protein_or_peptide / ID: 4 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Human immunodeficiency virus 1
Molecular weightTheoretical: 17.192574 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
AVGIGAVFLG FLGAAGSTMG AASMTLTVQA RNLLSGIVQQ QSNLLRAPEC QQHLLKLTVW GIKQLQARVL AVERYLRDQQ LLGIWGCSG KLICCTNVPW NSTWSNRNLS EIWDNMTWLQ WDKEISNYTQ IIYGLLEESQ NQQEKNEQDL LALD

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Macromolecule #6: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 6 / Number of copies: 49 / 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

BufferpH: 7.4
Component:
ConcentrationName
50.0 mMTris
150.0 mMSodium Chloride
0.005 mMLauryl Maltose Neopentyl Glycol
GridModel: UltrAuFoil R1.2/1.3 / Material: GOLD / Mesh: 300 / Pretreatment - Type: PLASMA CLEANING
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 283 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Number real images: 7339 / Average electron dose: 41.3591843915 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.5 µm / Nominal magnification: 22500
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionSoftware - Name: Gctf / Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

6v0r


Details: Map was created using pdb coordinates using mol map in ucsf chimera
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.73 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.0) / Number images used: 63946
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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