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- EMDB-28181: Structure of lineage VII Lassa virus glycoprotein complex (strain... -
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Open data
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Basic information
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Title | Structure of lineage VII Lassa virus glycoprotein complex (strain Togo/2016/7082) | |||||||||
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![]() | glycoprotein complex / Lassa mammarenavirus / LASV / GPC / immune system / viral fusion protein / Lassa virus / lineage VI / Togo/2016/7082 / VIRAL PROTEIN | |||||||||
Function / homology | ![]() 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 | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.13 Å | |||||||||
![]() | Perrett HR / Ward AB | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Structural conservation of Lassa virus glycoproteins and recognition by neutralizing antibodies. Authors: Hailee R Perrett / Philip J M Brouwer / Jonathan Hurtado / Maddy L Newby / Lin Liu / Helena Müller-Kräuter / Sarah Müller Aguirre / Judith A Burger / Joey H Bouhuijs / Grace Gibson / ...Authors: Hailee R Perrett / Philip J M Brouwer / Jonathan Hurtado / Maddy L Newby / Lin Liu / Helena Müller-Kräuter / Sarah Müller Aguirre / Judith A Burger / Joey H Bouhuijs / Grace Gibson / Terrence Messmer / John S Schieffelin / Aleksandar Antanasijevic / Geert-Jan Boons / Thomas Strecker / Max Crispin / Rogier W Sanders / Bryan Briney / Andrew B Ward / ![]() ![]() ![]() ![]() Abstract: Lassa fever is an acute hemorrhagic fever caused by the zoonotic Lassa virus (LASV). The LASV glycoprotein complex (GPC) mediates viral entry and is the sole target for neutralizing antibodies. ...Lassa fever is an acute hemorrhagic fever caused by the zoonotic Lassa virus (LASV). The LASV glycoprotein complex (GPC) mediates viral entry and is the sole target for neutralizing antibodies. Immunogen design is complicated by the metastable nature of recombinant GPCs and the antigenic differences among phylogenetically distinct LASV lineages. Despite the sequence diversity of the GPC, structures of most lineages are lacking. We present the development and characterization of prefusion-stabilized, trimeric GPCs of LASV lineages II, V, and VII, revealing structural conservation despite sequence diversity. High-resolution structures and biophysical characterization of the GPC in complex with GP1-A-specific antibodies suggest their neutralization mechanisms. Finally, we present the isolation and characterization of a trimer-preferring neutralizing antibody belonging to the GPC-B competition group with an epitope that spans adjacent protomers and includes the fusion peptide. Our work provides molecular detail information on LASV antigenic diversity and will guide efforts to design pan-LASV vaccines. | |||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 14.6 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 20.6 KB 20.6 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 6.5 KB | Display | ![]() |
Images | ![]() | 143.6 KB | ||
Masks | ![]() | 30.5 MB | ![]() | |
Filedesc metadata | ![]() | 6.4 KB | ||
Others | ![]() ![]() ![]() | 14.3 MB 22.1 MB 22.1 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8ejgMC ![]() 8ejdC ![]() 8ejeC ![]() 8ejfC ![]() 8ejhC ![]() 8ejiC ![]() 8ejjC C: citing same article ( M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Map
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Voxel size | X=Y=Z: 1.15 Å | ||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
-Mask #1
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-Additional map: #1
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-Half map: #2
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Density Histograms |
-Half map: #1
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Density Histograms |
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Sample components
-Entire : Lassa mammarenavirus GPC
Entire | Name: Lassa mammarenavirus GPC |
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Components |
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-Supramolecule #1: Lassa mammarenavirus GPC
Supramolecule | Name: Lassa mammarenavirus GPC / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#2 Details: GPC protein codon-optimized and expressed in HEK 293F cells using covalently-linked I53-50A trimerization scaffold. |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 275 KDa |
-Macromolecule #1: Glycoprotein GP1
Macromolecule | Name: Glycoprotein GP1 / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 22.180051 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: LIYKGSYELQ TLELNMETLN MTMPLSCTKN SSHHYIRVGN ETGLELTLTN TSIINHKFCN LSDAHKRNLY DHALMSILST FHLSIPNFN QYEAMSCDFN GGKISVQYNL SHAYAVDAAE HCGTVANGVL QTFMRMAWGG SYIALDSGCG NWDCIMTSYQ Y LIIQNTTW ...String: LIYKGSYELQ TLELNMETLN MTMPLSCTKN SSHHYIRVGN ETGLELTLTN TSIINHKFCN LSDAHKRNLY DHALMSILST FHLSIPNFN QYEAMSCDFN GGKISVQYNL SHAYAVDAAE HCGTVANGVL QTFMRMAWGG SYIALDSGCG NWDCIMTSYQ Y LIIQNTTW EDHCQFSRPS PIGYLGLLSQ RTRDIYIS UniProtKB: Pre-glycoprotein polyprotein GP complex |
-Macromolecule #2: Glycoprotein GP2
Macromolecule | Name: Glycoprotein GP2 / type: protein_or_peptide / ID: 2 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 19.176748 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: GTFTWTLSDS EGNETPGGYC LTRWMLIEAE LKCFGNTAVA KCNEKHDEEF CDMLRLFDFN KQAIQRLKSP AQMSIQLINK AVNALINDQ LIMKNHLRDM MCIPYCNYSK YWYLNHTSSG RTSLPKCWLV SNGSYLNETH FSDDIEQQAD NMITEMLQKE Y IDRQG UniProtKB: Pre-glycoprotein polyprotein GP complex |
-Macromolecule #8: 2-acetamido-2-deoxy-beta-D-glucopyranose
Macromolecule | Name: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 8 / Number of copies: 6 / 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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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 3.5 mg/mL |
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Buffer | pH: 7.4 / Details: TBS |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV Details: Wait time 10 s; blotting time varied between 3-7 s; blotting force of 0. |
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Electron microscopy
Microscope | FEI TALOS ARCTICA |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Average electron dose: 50.0 e/Å2 |
Electron beam | Acceleration voltage: 200 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 0.7000000000000001 µm |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Experimental equipment | ![]() Model: Talos Arctica / Image courtesy: FEI Company |