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Open data
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Basic information
Entry | Database: PDB / ID: 9mj1 | |||||||||||||||||||||||||||
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Title | Native tagless Lassa virus spike complex bound at pH 8.0 | |||||||||||||||||||||||||||
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![]() | VIRAL PROTEIN / Spike complex | |||||||||||||||||||||||||||
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 / metal ion binding / membrane Similarity search - Function | |||||||||||||||||||||||||||
Biological species | ![]() ![]() | |||||||||||||||||||||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 1.9 Å | |||||||||||||||||||||||||||
![]() | Katz, M. / Cohen-Dvashi, H. / Diskin, R. | |||||||||||||||||||||||||||
Funding support | 1items
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![]() | ![]() Title: pH-induced conformational changes and inhibition of the Lassa virus spike complex. Authors: Michael Katz / Hadas Cohen-Dvashi / Sarah Borni / John Ruedas / Greg Henkel / Ken McCormack / Ron Diskin / ![]() ![]() Abstract: Lassa virus (LASV) is a devastating human pathogen with no vaccines and limited therapeutics. The LASV class-I spike complex engages target cells via binding its primary host receptor, matriglycan, ...Lassa virus (LASV) is a devastating human pathogen with no vaccines and limited therapeutics. The LASV class-I spike complex engages target cells via binding its primary host receptor, matriglycan, followed by macropinocytosis and binding of its secondary receptor, lysosomal-associated membrane protein 1 (LAMP1), to trigger virus fusion. This process occurs across multiple pH-dependent steps, but the molecular events remain largely unknown. Through high-resolution structures, we study the pH-induced conformational changes of the spike preceding membrane fusion. We reveal pH-sensitive metal coordination sites that control the integrity of the spike's native state, elucidate a reorganization of the spike's transmembrane region, and provide a mechanism for dissociation from its primary receptor. Using the entry inhibitor ARN-75039, we validate our findings and establish the molecular basis for the binding and function of this investigational drug. These data define the molecular basis for the cell entry of LASV and will promote efforts in combating this virus and potentially related viral pathogens. | |||||||||||||||||||||||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 621.8 KB | Display | ![]() |
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PDB format | ![]() | 404.5 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 2.6 MB | Display | ![]() |
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Full document | ![]() | 2.7 MB | Display | |
Data in XML | ![]() | 72.8 KB | Display | |
Data in CIF | ![]() | 128.1 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 48306MC ![]() 9mheC ![]() 9mivC ![]() 9miyC ![]() 9mj2C ![]() 9r8uC M: map data used to model this data C: citing same article ( |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
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Assembly
Deposited unit | ![]()
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1 |
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Components
-Glycoprotein ... , 2 types, 6 molecules abcABC
#1: Protein | Mass: 26828.064 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #2: Protein | Mass: 29064.402 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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-Antibody , 2 types, 6 molecules HDFLEG
#3: Antibody | Mass: 26793.730 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() #4: Antibody | Mass: 23492.086 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() |
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-Sugars , 11 types, 33 molecules 
#5: Polysaccharide | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose- ...2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-3)-alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose Type: oligosaccharide / Mass: 1276.157 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source | ||||||||||||||||||
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#6: Polysaccharide | beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta- ...beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose Source method: isolated from a genetically manipulated source #7: Polysaccharide | Source method: isolated from a genetically manipulated source #8: Polysaccharide | Type: oligosaccharide / Mass: 1276.157 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source #9: Polysaccharide | alpha-D-mannopyranose-(1-6)-alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2- ...alpha-D-mannopyranose-(1-6)-alpha-D-mannopyranose-(1-3)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose | Type: oligosaccharide / Mass: 1056.964 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source #10: Polysaccharide | Source method: isolated from a genetically manipulated source #11: Polysaccharide | Source method: isolated from a genetically manipulated source #12: Polysaccharide | alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2- ...alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | Source method: isolated from a genetically manipulated source #13: Polysaccharide | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose- ...2-acetamido-2-deoxy-beta-D-glucopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose | Source method: isolated from a genetically manipulated source #14: Polysaccharide | Type: oligosaccharide / Mass: 458.369 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source #15: Sugar | ChemComp-NAG / |
-Non-polymers , 2 types, 3113 molecules 


#16: Chemical | #17: Water | ChemComp-HOH / | |
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-Details
Has ligand of interest | N |
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Has protein modification | Y |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: Spike complex of Lassa virus bound by 12.1F and ARN-75039 Type: COMPLEX / Entity ID: #1-#4 / Source: RECOMBINANT |
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Molecular weight | Experimental value: NO |
Source (natural) | Organism: ![]() |
Source (recombinant) | Organism: ![]() |
Buffer solution | pH: 8 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: TFS KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal magnification: 105000 X / Nominal defocus max: 1800 nm / Nominal defocus min: 600 nm |
Image recording | Electron dose: 38 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
EM software | Name: PHENIX / Version: dev_5278 / Category: model refinement | ||||||||||||||||||||||||
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
Symmetry | Point symmetry: C3 (3 fold cyclic) | ||||||||||||||||||||||||
3D reconstruction | Resolution: 1.9 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 448167 / Symmetry type: POINT | ||||||||||||||||||||||||
Refinement | Cross valid method: NONE Stereochemistry target values: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
Displacement parameters | Biso mean: 17.65 Å2 | ||||||||||||||||||||||||
Refine LS restraints |
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