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- EMDB-43168: Lineage IV Lassa virus glycoprotein (Josiah) in complex with rabb... -

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Basic information

Entry
Database: EMDB / ID: EMD-43168
TitleLineage IV Lassa virus glycoprotein (Josiah) in complex with rabbit polyclonal antibody (GP1-A epitope)
Map datasharpened map
Sample
  • Complex: Lineage IV Lassa virus glycoprotein (Josiah) in complex with rabbit polyclonal antibody (GP1-A epitope)
    • Protein or peptide: Glycoprotein G1
    • Protein or peptide: Glycoprotein G2
    • Protein or peptide: Rabbit polyclonal Fv light chain
    • Protein or peptide: Rabbit polyclonal Fv heavy chain
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose
KeywordsLassa / polyclonal antibody / GP1-A / glycoprotein / VIRAL PROTEIN / VIRAL PROTEIN-IMMUNE SYSTEM complex
Function / homology
Function and homology information


host cell Golgi membrane / receptor-mediated endocytosis of virus by host cell / host cell endoplasmic reticulum membrane / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / host cell plasma membrane / virion membrane / membrane / metal ion binding
Similarity search - Function
Arenavirus glycoprotein, zinc binding domain / Arenavirus glycoprotein / Arenavirus glycoprotein
Similarity search - Domain/homology
Pre-glycoprotein polyprotein GP complex
Similarity search - Component
Biological speciesOryctolagus cuniculus (rabbit) / Lassa virus Josiah
Methodsingle particle reconstruction / cryo EM / Resolution: 2.8 Å
AuthorsBrouwer PJM / Perrett HR / Ward AB
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)R01 AI171438 United States
CitationJournal: Cell Rep / Year: 2024
Title: Defining bottlenecks and opportunities for Lassa virus neutralization by structural profiling of vaccine-induced polyclonal antibody responses.
Authors: Philip J M Brouwer / Hailee R Perrett / Tim Beaumont / Haye Nijhuis / Sabine Kruijer / Judith A Burger / Ilja Bontjer / Wen-Hsin Lee / James A Ferguson / Martin Schauflinger / Helena Müller- ...Authors: Philip J M Brouwer / Hailee R Perrett / Tim Beaumont / Haye Nijhuis / Sabine Kruijer / Judith A Burger / Ilja Bontjer / Wen-Hsin Lee / James A Ferguson / Martin Schauflinger / Helena Müller-Kräuter / Rogier W Sanders / Thomas Strecker / Marit J van Gils / Andrew B Ward /
Abstract: Lassa fever continues to be a major public health burden in West Africa, yet effective therapies or vaccines are lacking. The isolation of protective neutralizing antibodies against the Lassa virus ...Lassa fever continues to be a major public health burden in West Africa, yet effective therapies or vaccines are lacking. The isolation of protective neutralizing antibodies against the Lassa virus glycoprotein complex (GPC) justifies the development of vaccines that can elicit strong neutralizing antibody responses. However, Lassa vaccine candidates have generally been unsuccessful at doing so, and the associated antibody responses to these vaccines remain poorly characterized. Here, we establish an electron microscopy-based epitope mapping workflow that enables high-resolution structural characterization of polyclonal antibodies to the GPC. By applying this method to rabbits vaccinated with a recombinant GPC vaccine and a GPC-derived virus-like particle, we reveal determinants of neutralization that involve epitopes of the GPC-A competition cluster. Furthermore, by identifying undescribed immunogenic off-target epitopes, we expose the challenges that recombinant GPC vaccines face. By enabling detailed polyclonal antibody characterization, our work ushers in a next generation of more rational Lassa vaccine design.
History
DepositionDec 18, 2023-
Header (metadata) releaseSep 25, 2024-
Map releaseSep 25, 2024-
UpdateSep 25, 2024-
Current statusSep 25, 2024Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_43168.png

Downloads & links

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Map

FileDownload / File: emd_43168.map.gz / Format: CCP4 / Size: 476.8 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.)
0.72 Å/pix.
x 500 pix.
= 359. Å		0.72 Å/pix.
x 500 pix.
= 359. Å		0.72 Å/pix.
x 500 pix.
= 359. Å

Surface

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Images are generated by Spider.

Voxel sizeX=Y=Z: 0.718 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.165
Minimum - Maximum-0.68922967 - 1.0263917
Average (Standard dev.)-0.00017572529 (±0.021896927)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions500500500
Spacing500500500
CellA=B=C: 359.0 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_43168_msk_1.map
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Half map: half map B

Fileemd_43168_half_map_1.map
Annotationhalf map B
Projections & Slices
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Histogram

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Half map: half map A

Fileemd_43168_half_map_2.map
Annotationhalf map A
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Sample components

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Entire : Lineage IV Lassa virus glycoprotein (Josiah) in complex with rabb...

EntireName: Lineage IV Lassa virus glycoprotein (Josiah) in complex with rabbit polyclonal antibody (GP1-A epitope)
Components
  • Complex: Lineage IV Lassa virus glycoprotein (Josiah) in complex with rabbit polyclonal antibody (GP1-A epitope)
    • Protein or peptide: Glycoprotein G1
    • Protein or peptide: Glycoprotein G2
    • Protein or peptide: Rabbit polyclonal Fv light chain
    • Protein or peptide: Rabbit polyclonal Fv heavy chain
  • Ligand: 2-acetamido-2-deoxy-beta-D-glucopyranose

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Supramolecule #1: Lineage IV Lassa virus glycoprotein (Josiah) in complex with rabb...

SupramoleculeName: Lineage IV Lassa virus glycoprotein (Josiah) in complex with rabbit polyclonal antibody (GP1-A epitope)
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#4
Source (natural)Organism: Oryctolagus cuniculus (rabbit)

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Macromolecule #1: Glycoprotein G1

MacromoleculeName: Glycoprotein G1 / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Lassa virus Josiah
Molecular weightTheoretical: 29.010352 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: MGQIVTFFQE VPHVIEEVMN IVLIALSVLA VLKGLYNFAT CGLVGLVTFL LLCGRSCTTS LYKGVYELQT LELNMETLNM TMPLSCTKN NSHHYIMVGN ETGLELTLTN TSIINHKFCN LSDAHKKNLY DHALMSIIST FHLSIPNFNQ YEAMSCDFNG G KISVQYNL ...String:
MGQIVTFFQE VPHVIEEVMN IVLIALSVLA VLKGLYNFAT CGLVGLVTFL LLCGRSCTTS LYKGVYELQT LELNMETLNM TMPLSCTKN NSHHYIMVGN ETGLELTLTN TSIINHKFCN LSDAHKKNLY DHALMSIIST FHLSIPNFNQ YEAMSCDFNG G KISVQYNL SHSYAGDAAN HCGTVANGVL QTFMRMAWGG SYIALDSGCG NWDCIMTSYQ YLIIQNTTWE DHCQFSRPSP IG YLGLLSQ RTRDIYISRR LL

UniProtKB: Pre-glycoprotein polyprotein GP complex

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Macromolecule #2: Glycoprotein G2

MacromoleculeName: Glycoprotein G2 / type: protein_or_peptide / ID: 2 / Number of copies: 3 / Enantiomer: LEVO
Source (natural)Organism: Lassa virus Josiah
Molecular weightTheoretical: 44.765047 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: GTFTWTLSDS EGKDTPGGYC LTRWMLIEAE LKCFGNTAVA KCNEKHDEEF CDMLRLFDFN KQAIQRLKAP AQMSIQLINK AVNALINDQ LIMKNHLRDI MCIPYCNYSK YWYLNHTTTG RTSLPKCWLV SNGSYLNETH FSDDIEQQAD NMITEMLQKE Y MERQGGSG ...String:
GTFTWTLSDS EGKDTPGGYC LTRWMLIEAE LKCFGNTAVA KCNEKHDEEF CDMLRLFDFN KQAIQRLKAP AQMSIQLINK AVNALINDQ LIMKNHLRDI MCIPYCNYSK YWYLNHTTTG RTSLPKCWLV SNGSYLNETH FSDDIEQQAD NMITEMLQKE Y MERQGGSG GSGGSGGSGG SEKAAKAEEA ARKMEELFKK HKIVAVLRAN SVEEAIEKAV AVFAGGVHLI EITFTVPDAD TV IKALSVL KEKGAIIGAG TVTSVEQCRK AVESGAEFIV SPHLDEEISQ FCKEKGVFYM PGVMTPTELV KAMKLGHDIL KLF PGEVVG PEFVKAMKGP FPNVKFVPTG GVDLDNVCEW FDAGVLAVGV GDALVEGDPD EVREKAKEFV EKIRGCTEGS LEWS HPQFE K

UniProtKB: Pre-glycoprotein polyprotein GP complex

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Macromolecule #3: Rabbit polyclonal Fv light chain

MacromoleculeName: Rabbit polyclonal Fv light chain / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Oryctolagus cuniculus (rabbit)
Molecular weightTheoretical: 9.039134 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)

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Macromolecule #4: Rabbit polyclonal Fv heavy chain

MacromoleculeName: Rabbit polyclonal Fv heavy chain / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Oryctolagus cuniculus (rabbit)
Molecular weightTheoretical: 10.145497 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)

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Macromolecule #10: 2-acetamido-2-deoxy-beta-D-glucopyranose

MacromoleculeName: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 10 / Number of copies: 13 / 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

Concentration0.1 mg/mL
BufferpH: 7.4
GridModel: Quantifoil R1.2/1.3 / Material: GRAPHENE OXIDE / Mesh: 400 / Support film - Material: CARBON / Support film - topology: HOLEY
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeTFS GLACIOS
Image recordingFilm or detector model: TFS FALCON 4i (4k x 4k) / Average electron dose: 40.7 e/Å2
Electron beamAcceleration voltage: 200 kV / Electron source: FIELD EMISSION GUN
Electron opticsC2 aperture diameter: 50.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.8 µm
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN

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Image processing

Startup modelType of model: INSILICO MODEL / In silico model: ab initio
Final reconstructionApplied symmetry - Point group: C1 (asymmetric) / Resolution.type: BY AUTHOR / Resolution: 2.8 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 146722
Initial angle assignmentType: PROJECTION MATCHING
Final angle assignmentType: PROJECTION MATCHING
FSC plot (resolution estimation)

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