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- PDB-9b2m: Hemagglutinin H1 New Caledonia 1999 in complex with monoclonal an... -
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Open data
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Basic information
Entry | Database: PDB / ID: 9b2m | |||||||||
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Title | Hemagglutinin H1 New Caledonia 1999 in complex with monoclonal antibody Fab 43_S0008 | |||||||||
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![]() | VIRAL PROTEIN/IMMUNE SYSTEM / influenza virus / broadly neutralizing antibody / bnAb / VH1-69 / DH3-9 / hemagglutinin / HA / stem / stalk / germline-targeting / VIRAL PROTEIN / VIRAL PROTEIN-IMMUNE SYSTEM complex | |||||||||
Function / homology | ![]() viral budding from plasma membrane / clathrin-dependent endocytosis of virus by host cell / host cell surface receptor binding / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / virion attachment to host cell / host cell plasma membrane / virion membrane / membrane Similarity search - Function | |||||||||
Biological species | ![]() ![]() ![]() ![]() | |||||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.09 Å | |||||||||
![]() | Torrents de la Pena, A. / de Paiva Froes Rocha, R. / Ward, A.B. / Ataca, S. / Kanekiyo, M. | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Modulating the immunodominance hierarchy of immunoglobulin germline-encoded structural motifs targeting the influenza hemagglutinin stem. Authors: Sila Ataca / Maya Sangesland / Rebeca de Paiva Fróes Rocha / Alba Torrents de la Peña / Larance Ronsard / Seyhan Boyoglu-Barnum / Rebecca A Gillespie / Yaroslav Tsybovsky / Tyler Stephens ...Authors: Sila Ataca / Maya Sangesland / Rebeca de Paiva Fróes Rocha / Alba Torrents de la Peña / Larance Ronsard / Seyhan Boyoglu-Barnum / Rebecca A Gillespie / Yaroslav Tsybovsky / Tyler Stephens / Syed M Moin / Julia Lederhofer / Adrian Creanga / Sarah F Andrews / Ralston M Barnes / Daniel Rohrer / Nils Lonberg / Barney S Graham / Andrew B Ward / Daniel Lingwood / Masaru Kanekiyo / ![]() Abstract: Antibodies targeting epitopes through germline-encoded motifs can be found in different individuals. While these public antibodies are often beneficial, they also pose hurdles for subdominant ...Antibodies targeting epitopes through germline-encoded motifs can be found in different individuals. While these public antibodies are often beneficial, they also pose hurdles for subdominant antibodies to emerge. Here, we use transgenic mice that reproduce the human IGHV1-6901 germline-encoded antibody response to the conserved stem epitope on group 1 hemagglutinin (HA) of influenza A virus to show that this germline-endowed response can be overridden by a subdominant yet cross-group reactive public antibody response. Immunization with a non-cognate group 2 HA stem enriched B cells harboring the IGHD3-9 gene, thereby switching from IGHV1-69- to IGHD3-9-encoded motif-dependent epitope recognition. These IGHD3-9 antibodies bound, neutralized, and conferred cross-group protection in mice against influenza A viruses. A cryoelectron microscopy (cryo-EM) structure of an IGHD3-9 antibody resembled the human broadly neutralizing antibody FI6v3, which uses IGHD3-9. Together, our findings offer insights into vaccine regimens that engage an immunoglobulin repertoire with broader cross-reactivity to influenza A 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 | ![]() | 454.3 KB | Display | ![]() |
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PDB format | ![]() | 358 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 44112MC 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
#1: Protein | Mass: 37803.648 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Details: Hemagglutinin New Caledonia 1999 HA1 / Source: (gene. exp.) ![]() ![]() ![]() #2: Protein | Mass: 25550.836 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Details: Hemagglutinin H1 New Caledonia 1999 / Source: (gene. exp.) ![]() ![]() ![]() #3: Antibody | Mass: 24914.199 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #4: Antibody | Mass: 24034.838 Da / Num. of mol.: 3 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() ![]() #5: Sugar | ChemComp-NAG / Has ligand of interest | Y | Has protein modification | 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: Hemagglutinin H1 New Caledonia 1999 in complex with monoclonal antibody Fab 43_S0008 Type: COMPLEX Details: Fab fragment was generated using papain digestion and size exclusion chromatography. The complex was incubated overnight and the sample was purified using size exclusion chromatography Entity ID: #2-#4 / Source: RECOMBINANT |
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Molecular weight | Value: 0.330 MDa / Experimental value: YES |
Source (natural) | Organism: ![]() |
Source (recombinant) | Organism: ![]() |
Buffer solution | pH: 7.4 / Details: TBS |
Specimen | Conc.: 2 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Grid material: COPPER / Grid mesh size: 300 divisions/in. / Grid type: Quantifoil R1.2/1.3 |
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 40 K |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 1500 nm / Nominal defocus min: 800 nm / Cs: 2.7 mm / C2 aperture diameter: 100 µm |
Image recording | Electron dose: 50 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K2 SUMMIT (4k x 4k) |
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Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: C3 (3 fold cyclic) | ||||||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.09 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 190711 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||||||
Atomic model building | PDB-ID: 4m4y Accession code: 4m4y / Source name: PDB / Type: experimental model |