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- PDB-8g3r: N2 neuraminidase of A/Tanzania/205/2010 H3N2 with S245N S247T mut... -
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Open data
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Basic information
Entry | Database: PDB / ID: 8g3r | ||||||
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Title | N2 neuraminidase of A/Tanzania/205/2010 H3N2 with S245N S247T mutations in complex with one FNI17 Fab molecule | ||||||
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![]() | VIRAL PROTEIN/IMMUNE SYSTEM / viral glycoprotein / antibody / Fab / influenza / virus / VIRAL PROTEIN-IMMUNE SYSTEM complex | ||||||
Function / homology | ![]() exo-alpha-(2->3)-sialidase activity / exo-alpha-(2->6)-sialidase activity / exo-alpha-(2->8)-sialidase activity / exo-alpha-sialidase / viral budding from plasma membrane / carbohydrate metabolic process / host cell plasma membrane / virion membrane / membrane / metal ion binding Similarity search - Function | ||||||
Biological species | ![]() ![]() ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.3 Å | ||||||
![]() | Dang, H.V. / Snell, G. | ||||||
Funding support | ![]()
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![]() | ![]() Title: A pan-influenza antibody inhibiting neuraminidase via receptor mimicry. Authors: Corey Momont / Ha V Dang / Fabrizia Zatta / Kevin Hauser / Caihong Wang / Julia di Iulio / Andrea Minola / Nadine Czudnochowski / Anna De Marco / Kaitlin Branch / David Donermeyer / Siddhant ...Authors: Corey Momont / Ha V Dang / Fabrizia Zatta / Kevin Hauser / Caihong Wang / Julia di Iulio / Andrea Minola / Nadine Czudnochowski / Anna De Marco / Kaitlin Branch / David Donermeyer / Siddhant Vyas / Alex Chen / Elena Ferri / Barbara Guarino / Abigail E Powell / Roberto Spreafico / Samantha S Yim / Dale R Balce / Istvan Bartha / Marcel Meury / Tristan I Croll / David M Belnap / Michael A Schmid / William Timothy Schaiff / Jessica L Miller / Elisabetta Cameroni / Amalio Telenti / Herbert W Virgin / Laura E Rosen / Lisa A Purcell / Antonio Lanzavecchia / Gyorgy Snell / Davide Corti / Matteo Samuele Pizzuto / ![]() ![]() ![]() Abstract: Rapidly evolving influenza A viruses (IAVs) and influenza B viruses (IBVs) are major causes of recurrent lower respiratory tract infections. Current influenza vaccines elicit antibodies ...Rapidly evolving influenza A viruses (IAVs) and influenza B viruses (IBVs) are major causes of recurrent lower respiratory tract infections. Current influenza vaccines elicit antibodies predominantly to the highly variable head region of haemagglutinin and their effectiveness is limited by viral drift and suboptimal immune responses. Here we describe a neuraminidase-targeting monoclonal antibody, FNI9, that potently inhibits the enzymatic activity of all group 1 and group 2 IAVs, as well as Victoria/2/87-like, Yamagata/16/88-like and ancestral IBVs. FNI9 broadly neutralizes seasonal IAVs and IBVs, including the immune-evading H3N2 strains bearing an N-glycan at position 245, and shows synergistic activity when combined with anti-haemagglutinin stem-directed antibodies. Structural analysis reveals that D107 in the FNI9 heavy chain complementarity-determinant region 3 mimics the interaction of the sialic acid carboxyl group with the three highly conserved arginine residues (R118, R292 and R371) of the neuraminidase catalytic site. FNI9 demonstrates potent prophylactic activity against lethal IAV and IBV infections in mice. The unprecedented breadth and potency of the FNI9 monoclonal antibody supports its development for the prevention of influenza illness by seasonal and pandemic viruses. | ||||||
History |
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 384.1 KB | Display | ![]() |
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PDB format | ![]() | 312.9 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 29709MC ![]() 8g30C ![]() 8g3mC ![]() 8g3nC ![]() 8g3oC ![]() 8g3pC ![]() 8g3qC ![]() 8g3vC ![]() 8g3zC ![]() 8g40C C: citing same article ( M: map data used to model this data |
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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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Noncrystallographic symmetry (NCS) | NCS domain:
NCS domain segments: Component-ID: _ / Beg auth comp-ID: ALA / Beg label comp-ID: ALA / End auth comp-ID: ILE / End label comp-ID: ILE / Refine code: _ / Auth seq-ID: 82 - 469 / Label seq-ID: 105 - 492
NCS ensembles :
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Components
-Antibody , 2 types, 2 molecules BC
#2: Antibody | Mass: 23479.061 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
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#3: Antibody | Mass: 24580.527 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() |
-Protein / Non-polymers , 2 types, 9 molecules EGFH![](data/chem/img/CA.gif)
![](data/chem/img/CA.gif)
#1: Protein | Mass: 54611.969 Da / Num. of mol.: 4 / Mutation: S245N, S247T Source method: isolated from a genetically manipulated source Details: A/Tanzania/205/2010 H3N2 / Source: (gene. exp.) ![]() ![]() ![]() #7: Chemical | ChemComp-CA / |
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-Sugars , 3 types, 28 molecules
#4: Polysaccharide | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose Source method: isolated from a genetically manipulated source #5: Polysaccharide | alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-3)-[alpha-D- ...alpha-D-mannopyranose-(1-2)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]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 #6: Polysaccharide | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta- ...2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose | Source method: isolated from a genetically manipulated source |
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-Details
Has ligand of interest | Y |
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-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: One FNI17 Fab in complex with tetrameric N2 NA protein from A/Tanzania/2010 strain with S245N S247T mutations Type: COMPLEX Details: Fab fragment generated by proteolytic cleavage of FNI17 IgG1 antibody Entity ID: #1-#3 / Source: RECOMBINANT | ||||||||||||||||||||
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Molecular weight | Value: 0.42 kDa/nm / Experimental value: NO | ||||||||||||||||||||
Source (natural) |
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Source (recombinant) |
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Buffer solution | pH: 8 / Details: 50 mM Tris-HCl, 150 mM NaCl, 10 mM CaCl2, pH 8.0 | ||||||||||||||||||||
Buffer component |
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Specimen | Conc.: 0.25 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES | ||||||||||||||||||||
Specimen support | Grid material: GOLD / Grid type: UltrAuFoil R1.2/1.3 | ||||||||||||||||||||
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 defocus max: 1500 nm / Nominal defocus min: 1200 nm |
Image recording | Electron dose: 53.81 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
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Processing
Software | Name: REFMAC / Version: 5.8.0267 / Classification: refinement | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 2.3 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 528681 / Symmetry type: POINT | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement | Resolution: 2.3→180.94 Å / Cor.coef. Fo:Fc: 0.84 / SU B: 5.468 / SU ML: 0.12 / ESU R: 0.178 Stereochemistry target values: MAXIMUM LIKELIHOOD WITH PHASES Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
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Solvent computation | Solvent model: PARAMETERS FOR MASK CACLULATION | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso mean: 82.646 Å2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: 1 / Total: 16432 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refine LS restraints |
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