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- EMDB-28942: HIV Env germline targeting BG505_MD64_N332-GT5 SOSIP in complex w... -

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Entry
Database: EMDB / ID: EMD-28942
TitleHIV Env germline targeting BG505_MD64_N332-GT5 SOSIP in complex with V3-glycan polyclonal Fab isolated from immunized BG18HCgl knock-in mice
Map datasharpened map
Sample
  • Complex: HIV Env germline targeting BG505_MD64_N332-GT5 SOSIP in complex with V3-glycan polyclonal Fab isolated from immunized BG18HCgl knock-in mice V3-glycan epitope polyclonal Fab heavy chain
    • Protein or peptide: BG505_MD64_N332-GT5 gp120
    • Protein or peptide: BG505_MD64_N332-GT5 gp41
    • Protein or peptide: V3-glycan epitope polyclonal Fab heavy chain
    • Protein or peptide: V3-glycan epitope polyclonal Fab light chain
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
Keywordsmouse antibody / germline targeting / HIV-1 / vaccine design / polyclonal / VIRAL PROTEIN-IMMUNE SYSTEM complex
Biological speciesMus musculus (house mouse) / synthetic construct (others)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.2 Å
AuthorsOzorowski G / Torres JL / Ward AB
Funding support United States, 3 items
OrganizationGrant numberCountry
Bill & Melinda Gates FoundationOPP1115782/INV-002916 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)A1144462 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM129547 United States
CitationJournal: Science / Year: 2024
Title: mRNA-LNP HIV-1 trimer boosters elicit precursors to broad neutralizing antibodies.
Authors: Zhenfei Xie / Ying-Cing Lin / Jon M Steichen / Gabriel Ozorowski / Sven Kratochvil / Rashmi Ray / Jonathan L Torres / Alessia Liguori / Oleksandr Kalyuzhniy / Xuesong Wang / John E Warner / ...Authors: Zhenfei Xie / Ying-Cing Lin / Jon M Steichen / Gabriel Ozorowski / Sven Kratochvil / Rashmi Ray / Jonathan L Torres / Alessia Liguori / Oleksandr Kalyuzhniy / Xuesong Wang / John E Warner / Stephanie R Weldon / Gordon A Dale / Kathrin H Kirsch / Usha Nair / Sabyasachi Baboo / Erik Georgeson / Yumiko Adachi / Michael Kubitz / Abigail M Jackson / Sara T Richey / Reid M Volk / Jeong Hyun Lee / Jolene K Diedrich / Thavaleak Prum / Samantha Falcone / Sunny Himansu / Andrea Carfi / John R Yates / James C Paulson / Devin Sok / Andrew B Ward / William R Schief / Facundo D Batista /
Abstract: Germline-targeting (GT) HIV vaccine strategies are predicated on deriving broadly neutralizing antibodies (bnAbs) through multiple boost immunogens. However, as the recruitment of memory B cells ...Germline-targeting (GT) HIV vaccine strategies are predicated on deriving broadly neutralizing antibodies (bnAbs) through multiple boost immunogens. However, as the recruitment of memory B cells (MBCs) to germinal centers (GCs) is inefficient and may be derailed by serum antibody-induced epitope masking, driving further B cell receptor (BCR) modification in GC-experienced B cells after boosting poses a challenge. Using humanized immunoglobulin knockin mice, we found that GT protein trimer immunogen N332-GT5 could prime inferred-germline precursors to the V3-glycan-targeted bnAb BG18 and that B cells primed by N332-GT5 were effectively boosted by either of two novel protein immunogens designed to have minimum cross-reactivity with the off-target V1-binding responses. The delivery of the prime and boost immunogens as messenger RNA lipid nanoparticles (mRNA-LNPs) generated long-lasting GCs, somatic hypermutation, and affinity maturation and may be an effective tool in HIV vaccine development.
History
DepositionNov 23, 2022-
Header (metadata) releaseMay 15, 2024-
Map releaseMay 15, 2024-
UpdateMay 29, 2024-
Current statusMay 29, 2024Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_28942.png

Downloads & links

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Map

FileDownload / File: emd_28942.map.gz / Format: CCP4 / Size: 343 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationsharpened map
Voxel sizeX=Y=Z: 0.8015 Å
Density
Contour LevelBy AUTHOR: 0.3
Minimum - Maximum-1.4415379 - 2.3820004
Average (Standard dev.)0.00029435667 (±0.054376256)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions448448448
Spacing448448448
CellA=B=C: 359.07202 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_28942_msk_1.map
Projections & Slices
AxesZYX

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Slices (1/2)
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Histogram

Histogram (log scale)

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Additional map: unsharpened map

Fileemd_28942_additional_1.map
Annotationunsharpened map
Projections & Slices
AxesZYX

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Histogram

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Half map: half map A

Fileemd_28942_half_map_1.map
Annotationhalf map A
Projections & Slices
AxesZYX

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Histogram

Histogram (log scale)

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Half map: half map B

Fileemd_28942_half_map_2.map
Annotationhalf map B
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Sample components

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Entire : HIV Env germline targeting BG505_MD64_N332-GT5 SOSIP in complex w...

EntireName: HIV Env germline targeting BG505_MD64_N332-GT5 SOSIP in complex with V3-glycan polyclonal Fab isolated from immunized BG18HCgl knock-in mice V3-glycan epitope polyclonal Fab heavy chain
Components
  • Complex: HIV Env germline targeting BG505_MD64_N332-GT5 SOSIP in complex with V3-glycan polyclonal Fab isolated from immunized BG18HCgl knock-in mice V3-glycan epitope polyclonal Fab heavy chain
    • Protein or peptide: BG505_MD64_N332-GT5 gp120
    • Protein or peptide: BG505_MD64_N332-GT5 gp41
    • Protein or peptide: V3-glycan epitope polyclonal Fab heavy chain
    • Protein or peptide: V3-glycan epitope polyclonal Fab light chain
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: HIV Env germline targeting BG505_MD64_N332-GT5 SOSIP in complex w...

SupramoleculeName: HIV Env germline targeting BG505_MD64_N332-GT5 SOSIP in complex with V3-glycan polyclonal Fab isolated from immunized BG18HCgl knock-in mice V3-glycan epitope polyclonal Fab heavy chain
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#4
Source (natural)Organism: Mus musculus (house mouse)

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Macromolecule #1: BG505_MD64_N332-GT5 gp120

MacromoleculeName: BG505_MD64_N332-GT5 gp120 / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 54.236801 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: AENLWVTVYY GVPVWKDAET TLFCASDAKA YETEKHNVWA THACVPTDPN PQEIHLENVT EEFNMWKNNM VEQMHEDIIS LWDQSLKPC VKLTPLCVTL QCTNYAPKLR SMMRGEIKNC SFNMTTELRD KKQKVYSLFY RLDVVQINEN QGNRSNNSNK E YRLINCNT ...String:
AENLWVTVYY GVPVWKDAET TLFCASDAKA YETEKHNVWA THACVPTDPN PQEIHLENVT EEFNMWKNNM VEQMHEDIIS LWDQSLKPC VKLTPLCVTL QCTNYAPKLR SMMRGEIKNC SFNMTTELRD KKQKVYSLFY RLDVVQINEN QGNRSNNSNK E YRLINCNT SAITQACPKV SFEPIPIHYC APAGFAILKC KDKKFNGTGP CPSVSTVQCT HGIKPVVSTQ LLLNGSLAEE EV IIRSENI TNNAKNILVQ LNTPVQINCT RPSNNTVKSI RIGPGQAFYY FGDVLGHVRM AHCNISKATW NETLGKVVKQ LRK HFGNNT IIRFAQSSGG DLEVTTHSFN CGGEFFYCNT SGLFNSTWIS NTSVQGSNST GSNDSLILPC WIKQIINMWQ RIGQ AMYAP PIQGVIRCVS NITGLILTRD GGSTNSTTET FRPGGGDMRD NWRSELYKYK VVKIEPLGVA PTRCKRRVVG RRRRR R

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Macromolecule #2: BG505_MD64_N332-GT5 gp41

MacromoleculeName: BG505_MD64_N332-GT5 gp41 / type: protein_or_peptide / ID: 2 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 18.250541 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
AVGIGAVSLG FLGAAGSTMG AASMTLTVQA RNLLSGIVQQ QSNLLRAPEP QQHLLKDTHW GIKQLQARVL AVEHYLRDQQ LLGIWGCSG KLICCTNVPW NSSWSNRNLS EIWDNMTWLQ WDKEISNYTQ IIYGLLEESQ NQQEKNEQDL LALDGTKHHH H HH

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Macromolecule #3: V3-glycan epitope polyclonal Fab heavy chain

MacromoleculeName: V3-glycan epitope polyclonal Fab heavy chain / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Mus musculus (house mouse)
Molecular weightTheoretical: 10.911441 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)(UNK)(UNK)(UNK)

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Macromolecule #4: V3-glycan epitope polyclonal Fab light chain

MacromoleculeName: V3-glycan epitope polyclonal Fab light chain / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Mus musculus (house mouse)
Molecular weightTheoretical: 8.868924 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)

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Macromolecule #7: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 7 / Number of copies: 33 / Formula: NAG
Molecular weightTheoretical: 221.208 Da
Chemical component information

ChemComp-NAG:
2-acetamido-2-deoxy-beta-D-glucopyranose / N-Acetylglucosamine

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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

Concentration2.6 mg/mL
BufferpH: 7.4
GridModel: UltrAuFoil R1.2/1.3 / Material: GOLD / Support film - Material: GOLD / Support film - topology: HOLEY / Pretreatment - Type: PLASMA CLEANING
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeTFS KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Cs: 2.7 mm / Nominal defocus max: 2.5 µm / Nominal defocus min: 0.8 µm / Nominal magnification: 29000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 78.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

4zmj

Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final 3D classificationSoftware - Name: RELION (ver. 3.1)
Details: focused classifications over Fab density with skip align
Final angle assignmentType: MAXIMUM LIKELIHOOD
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. 3.2) / Details: non-uniform refinement / Number images used: 23292
FSC plot (resolution estimation)

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