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- PDB-6xsk: Cryo-EM Structure of Vaccine-Elicited Rhesus Antibody 789-203-3C1... -

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Basic information

Entry
Database: PDB / ID: 6xsk
TitleCryo-EM Structure of Vaccine-Elicited Rhesus Antibody 789-203-3C12 in Complex with Stabilized SI06 (A/Solomon Islands/3/06) Influenza Hemagglutinin Trimer
Components
  • (789-203-3C12 Fab ...) x 2
  • (Hemagglutinin ...) x 2
KeywordsIMMUNE SYSTEM/Viral Protein / Hemagglutinin ectodomain / Prefusion conformation / Vaccine-elicited antibody / Disulfide-stabilized trimer / IMMUNE SYSTEM / IMMUNE SYSTEM-Viral Protein complex
Function / homology
Function and homology information


viral budding from plasma membrane / clathrin-dependent endocytosis of virus by host cell / host cell surface receptor binding / apical plasma membrane / 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
Similarity search - Function
Haemagglutinin, influenzavirus A / Haemagglutinin, HA1 chain, alpha/beta domain superfamily / Haemagglutinin / Haemagglutinin, influenzavirus A/B / Viral capsid/haemagglutinin protein
Similarity search - Domain/homology
Biological speciesMacaca mulatta (Rhesus monkey)
Influenza A virus
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.85 Å
AuthorsCerutti, G. / Gorman, J. / Kwong, P.D. / Shapiro, L.
Funding support United States, 2items
OrganizationGrant numberCountry
Bill & Melinda Gates Foundation United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID) United States
CitationJournal: Immunity / Year: 2022
Title: Co-immunization with hemagglutinin stem immunogens elicits cross-group neutralizing antibodies and broad protection against influenza A viruses.
Authors: Syed M Moin / Jeffrey C Boyington / Seyhan Boyoglu-Barnum / Rebecca A Gillespie / Gabriele Cerutti / Crystal Sao-Fong Cheung / Alberto Cagigi / John R Gallagher / Joshua Brand / Madhu ...Authors: Syed M Moin / Jeffrey C Boyington / Seyhan Boyoglu-Barnum / Rebecca A Gillespie / Gabriele Cerutti / Crystal Sao-Fong Cheung / Alberto Cagigi / John R Gallagher / Joshua Brand / Madhu Prabhakaran / Yaroslav Tsybovsky / Tyler Stephens / Brian E Fisher / Adrian Creanga / Sila Ataca / Reda Rawi / Kizzmekia S Corbett / Michelle C Crank / Gunilla B Karlsson Hedestam / Jason Gorman / Adrian B McDermott / Audray K Harris / Tongqing Zhou / Peter D Kwong / Lawrence Shapiro / John R Mascola / Barney S Graham / Masaru Kanekiyo /
Abstract: Current influenza vaccines predominantly induce immunity to the hypervariable hemagglutinin (HA) head, requiring frequent vaccine reformulation. Conversely, the immunosubdominant yet conserved HA ...Current influenza vaccines predominantly induce immunity to the hypervariable hemagglutinin (HA) head, requiring frequent vaccine reformulation. Conversely, the immunosubdominant yet conserved HA stem harbors a supersite that is targeted by broadly neutralizing antibodies (bnAbs), representing a prime target for universal vaccines. Here, we showed that the co-immunization of two HA stem immunogens derived from group 1 and 2 influenza A viruses elicits cross-group protective immunity and neutralizing antibody responses in mice, ferrets, and nonhuman primates (NHPs). Immunized mice were protected from multiple group 1 and 2 viruses, and all animal models showed broad serum-neutralizing activity. A bnAb isolated from an immunized NHP broadly neutralized and protected against diverse viruses, including H5N1 and H7N9. Genetic and structural analyses revealed strong homology between macaque and human bnAbs, illustrating common biophysical constraints for acquiring cross-group specificity. Vaccine elicitation of stem-directed cross-group-protective immunity represents a step toward the development of broadly protective influenza vaccines.
History
DepositionJul 15, 2020Deposition site: RCSB / Processing site: RCSB
Revision 1.0Jul 21, 2021Provider: repository / Type: Initial release
Revision 1.1Jul 28, 2021Group: Source and taxonomy / Structure summary
Category: em_entity_assembly / em_entity_assembly_naturalsource
Revision 1.2Sep 22, 2021Group: Database references / Structure summary / Category: database_2 / struct
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession / _struct.title
Revision 1.3Feb 1, 2023Group: Database references / Refinement description
Category: citation / citation_author / pdbx_initial_refinement_model
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year

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Structure visualization

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Assembly

Deposited unit
L: 789-203-3C12 Fab Light Chain
H: 789-203-3C12 Fab Heavy Chain
A: Hemagglutinin HA1 chain
B: Hemagglutinin HA2 chain
C: Hemagglutinin HA1 chain
D: Hemagglutinin HA2 chain
E: Hemagglutinin HA1 chain
F: Hemagglutinin HA2 chain
J: 789-203-3C12 Fab Light Chain
G: 789-203-3C12 Fab Heavy Chain
K: 789-203-3C12 Fab Light Chain
I: 789-203-3C12 Fab Heavy Chain
hetero molecules


Theoretical massNumber of molelcules
Total (without water)415,74936
Polymers408,12512
Non-polymers7,62424
Water0
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: microscopy
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

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Hemagglutinin ... , 2 types, 6 molecules ACEBDF

#3: Protein Hemagglutinin HA1 chain


Mass: 38269.184 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Influenza A virus (A/Solomon Islands/3/2006(H1N1))
Strain: A/Solomon Islands/3/2006(H1N1) / Gene: HA / Production host: Homo sapiens (human) / References: UniProt: A7Y8I1
#4: Protein Hemagglutinin HA2 chain


Mass: 25264.090 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Influenza A virus (A/Solomon Islands/3/2006(H1N1))
Strain: A/Solomon Islands/3/2006(H1N1) / Gene: HA / Production host: Homo sapiens (human) / References: UniProt: A7Y8I1

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Antibody , 2 types, 6 molecules LJKHGI

#1: Antibody 789-203-3C12 Fab Light Chain


Mass: 23209.664 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Macaca mulatta (Rhesus monkey) / Production host: Homo sapiens (human)
#2: Antibody 789-203-3C12 Fab Heavy Chain


Mass: 49298.629 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Macaca mulatta (Rhesus monkey) / Production host: Homo sapiens (human)

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Sugars , 3 types, 24 molecules

#5: 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


Type: oligosaccharide / Mass: 586.542 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpb1-4DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/2,3,2/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5]/1-1-2/a4-b1_b4-c1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{}}}}LINUCSPDB-CARE
#6: Polysaccharide
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 6
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-Glycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}}LINUCSPDB-CARE
#7: Sugar
ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE / N-Acetylglucosamine


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 15 / Source method: obtained synthetically / Formula: C8H15NO6 / Feature type: SUBJECT OF INVESTIGATION
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0

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Details

Has ligand of interestY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

Component
IDNameTypeEntity IDParent-IDSource
1Influenza Hemagglutinin SI06 Trimer in complex with 789-203-3C12 FabORGANELLE OR CELLULAR COMPONENT#1-#40RECOMBINANT
2789-203-3C12 Fab Heavy and Light ChainsORGANELLE OR CELLULAR COMPONENT#1-#21RECOMBINANT
3Influenza HemagglutininHemagglutinin (influenza)ORGANELLE OR CELLULAR COMPONENT#3-#41RECOMBINANT
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
13Influenza A virus (A/Solomon Islands/3/2006(H1N1))464623
22Macaca mulatta (Rhesus monkey)9544
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy
Image recordingElectron dose: 42 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k)

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Processing

EM software
IDNameCategory
2Leginonimage acquisition
4cryoSPARCCTF correction
7UCSF Chimeramodel fitting
8Cootmodel fitting
10cryoSPARCinitial Euler assignment
11cryoSPARCfinal Euler assignment
13cryoSPARC3D reconstruction
14PHENIXmodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.85 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 116041 / Symmetry type: POINT
Atomic model buildingProtocol: FLEXIBLE FIT
Atomic model buildingPDB-ID: 6FYT

6fyt

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