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- PDB-9gsp: Structure of uncleaved Influenza A/Victoria/2570/2019 Haemaggluti... -

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Basic information

Entry
Database: PDB / ID: 9gsp
TitleStructure of uncleaved Influenza A/Victoria/2570/2019 Haemagglutinin. The 2021 Influenza A(H1N1)pdm09 egg-derived vaccine candidate.
ComponentsHemagglutinin
KeywordsVIRAL PROTEIN / glycoprotein / viral receptor / fusion protein / HA
Function / homology
Function and homology information


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
Haemagglutinin, influenzavirus A / Haemagglutinin, HA1 chain, alpha/beta domain superfamily / Haemagglutinin / Haemagglutinin, influenzavirus A/B / Viral capsid/haemagglutinin protein
Similarity search - Domain/homology
Biological speciesH1N1 subtype (virus)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.68 Å
AuthorsWaraich, K. / Meir, A. / Petrov, F. / Akbar, S. / Smith, T. / Anne Scott, K. / Dibben, O. / Bhella, D.
Funding support United Kingdom, 1items
OrganizationGrant numberCountry
Other private United Kingdom
CitationJournal: To Be Published
Title: Structure of uncleaved Influenza A/Victoria/2570/2019 Haemagglutinin. The 2021 Influenza A(H1N1)pdm09 egg-derived vaccine candidate.
Authors: Waraich, K. / Meir, A. / Petrov, F. / Akbar, S. / Smith, T. / Anne Scott, K. / Dibben, O. / Bhella, D.
History
DepositionSep 16, 2024Deposition site: PDBE / Processing site: PDBE
Revision 1.0Oct 8, 2025Provider: repository / Type: Initial release
Revision 1.0Oct 8, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Oct 8, 2025Data content type: FSC / Data content type: FSC / Provider: repository / Type: Initial release
Revision 1.0Oct 8, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Oct 8, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Oct 8, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Oct 8, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Hemagglutinin
B: Hemagglutinin
C: Hemagglutinin
hetero molecules


Theoretical massNumber of molelcules
Total (without water)196,33921
Polymers190,6523
Non-polymers5,68718
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

#1: Protein Hemagglutinin


Mass: 63550.672 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) H1N1 subtype (virus) / Gene: HA / Production host: Homo sapiens (human) / References: UniProt: A0A6M4YP75
#2: 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.: 3
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam 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
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}LINUCSPDB-CARE
#3: 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-ROHGlycam 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
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-Manp]{}}}LINUCSPDB-CARE
#4: 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


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 12 / Source method: obtained synthetically / Formula: C8H15NO6
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
Has ligand of interestN
Has protein modificationY

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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

ComponentName: Influenza A virus / Type: VIRUS / Entity ID: #1 / Source: RECOMBINANT
Molecular weightValue: 420 kDa/nm / Experimental value: NO
Source (natural)Organism: Influenza A virus
Source (recombinant)Organism: Homo sapiens (human) / Cell: Human Embryonic Kidney 293
Details of virusEmpty: YES / Enveloped: NO / Isolate: STRAIN / Type: VIRION
Buffer solutionpH: 8
Details: 0.15 M NaCl, 25 mM Tris-HCl pH 8, and 0.1% beta-octylglucoside (BOG)
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid type: C-flat-2/2
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 95 % / Chamber temperature: 293 K

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Electron microscopy imaging

MicroscopyModel: JEOL CRYO ARM 300
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 1000 nm
Image recordingElectron dose: 68 e/Å2 / Film or detector model: DIRECT ELECTRON APOLLO (4k x 4k) / Num. of real images: 3741

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Processing

EM software
IDNameVersionCategory
1Topazparticle selection
7ISOLDE1.6model fitting
9PHENIX1.21.1_5286:model refinement
13RELION4.0.13D reconstruction
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
SymmetryPoint symmetry: C3 (3 fold cyclic)
3D reconstructionResolution: 3.68 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 163054 / Symmetry type: POINT
Atomic model buildingProtocol: AB INITIO MODEL / Space: REAL
Atomic model buildingSource name: SwissModel / Type: in silico model

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