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- PDB-8zdw: The cryoEM structure of H5N1 HA split from symmetric filament in ... -

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Basic information

Entry
Database: PDB / ID: 8zdw
TitleThe cryoEM structure of H5N1 HA split from symmetric filament in conformation A
Components
  • (Hemagglutinin) x 2
  • Anti-H5N1 hemagglutinin monoclonal anitbody H5M9 heavy chain
  • H5M9 Fab, light chain
KeywordsVIRAL PROTEIN/IMMUNE SYSTEM / Influenza / glycosylation / sialic acid / VIRAL PROTEIN-IMMUNE SYSTEM complex
Function / homology
Function and homology information


immunoglobulin complex / clathrin-dependent endocytosis of virus by host cell / adaptive immune response / 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 ...immunoglobulin complex / clathrin-dependent endocytosis of virus by host cell / adaptive immune response / 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 / identical protein binding / membrane
Similarity search - Function
Haemagglutinin, influenzavirus A / Haemagglutinin, HA1 chain, alpha/beta domain superfamily / Haemagglutinin / Haemagglutinin, influenzavirus A/B / Viral capsid/haemagglutinin protein / : / Immunoglobulin subtype 2 / Immunoglobulin C-2 Type / Immunoglobulin V-Type / Immunoglobulin V-set domain ...Haemagglutinin, influenzavirus A / Haemagglutinin, HA1 chain, alpha/beta domain superfamily / Haemagglutinin / Haemagglutinin, influenzavirus A/B / Viral capsid/haemagglutinin protein / : / Immunoglobulin subtype 2 / Immunoglobulin C-2 Type / Immunoglobulin V-Type / Immunoglobulin V-set domain / Immunoglobulin V-set domain / Immunoglobulin subtype / Immunoglobulin / Immunoglobulin C-Type / Immunoglobulin C1-set / Immunoglobulin C1-set domain / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like domain superfamily / Immunoglobulin-like fold
Similarity search - Domain/homology
Hemagglutinin / Anti-H5N1 hemagglutinin monoclonal anitbody H5M9 heavy chain
Similarity search - Component
Biological speciesInfluenza A virus
Mus musculus (house mouse)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.45 Å
AuthorsLi, R. / Gao, J. / Wang, L. / Gui, M. / Xiang, Y.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC) China
CitationJournal: Npj Viruses / Year: 2024
Title: Multivalent interactions between fully glycosylated influenza virus hemagglutinins mediated by glycans at distinct N-glycosylation sites.
Authors: Ruofan Li / Jingjing Gao / Lin Wang / Miao Gui / Ye Xiang /
Abstract: The hemagglutinin (HA) glycoprotein of influenza virus binds host cell receptors and mediates viral entry. Here we present cryo-EM structures of fully glycosylated HAs from H5N1 and H5N8 influenza ...The hemagglutinin (HA) glycoprotein of influenza virus binds host cell receptors and mediates viral entry. Here we present cryo-EM structures of fully glycosylated HAs from H5N1 and H5N8 influenza viruses. We find that the H5N1 HA can form filaments that comprise two head-to-head HA trimers. Multivalent interactions between the two HA trimers are mediated by glycans attached to N158. The distal Sia1-Gal2-NAG3 sugar moiety of N158 interacts with the receptor binding site on the opposing HA trimer. Additional interactions are observed between NAG3 and residues K222 and K193. The H5N8 HA lacks the N158 glycosylation site and does not form the filamentous structure. However, the H5N8 HA exhibits an auto-inhibition conformation, where the receptor binding site is occupied by the glycan chain attached to residue N169 from a neighboring protomer. These structures represent native HA-glycan interactions, which may closely mimic the receptor-HA interactions on the cell surface.
History
DepositionMay 3, 2024Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Sep 25, 2024Provider: repository / Type: Initial release
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Revision 1.1Oct 23, 2024Group: Data collection / Structure summary
Category: em_admin / pdbx_entry_details / pdbx_modification_feature
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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Hemagglutinin
B: Hemagglutinin
R: H5M9 Fab, light chain
U: Anti-H5N1 hemagglutinin monoclonal anitbody H5M9 heavy chain
D: Hemagglutinin
I: Hemagglutinin
F: Anti-H5N1 hemagglutinin monoclonal anitbody H5M9 heavy chain
L: Anti-H5N1 hemagglutinin monoclonal anitbody H5M9 heavy chain
E: H5M9 Fab, light chain
J: H5M9 Fab, light chain
C: Hemagglutinin
H: Hemagglutinin
hetero molecules


Theoretical massNumber of molelcules
Total (without water)345,80036
Polymers336,33012
Non-polymers9,47124
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

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Protein , 2 types, 6 molecules ACHBDI

#1: Protein Hemagglutinin


Mass: 38080.363 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Influenza A virus (strain A/Vietnam/1203/2004 H5N1)
Gene: HA / Production host: Homo sapiens (human) / References: UniProt: Q6DQ33
#2: Protein Hemagglutinin


Mass: 26147.387 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Influenza A virus (strain A/Vietnam/1203/2004 H5N1)
Gene: HA / Production host: Homo sapiens (human) / References: UniProt: Q6DQ33

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Antibody , 2 types, 6 molecules REJUFL

#3: Antibody H5M9 Fab, light chain


Mass: 23946.344 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Production host: Homo sapiens (human)
#4: Antibody Anti-H5N1 hemagglutinin monoclonal anitbody H5M9 heavy chain


Mass: 23935.797 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Mus musculus (house mouse) / Production host: Homo sapiens (human) / References: UniProt: U5LP42

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Sugars , 4 types, 24 molecules

#5: 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
#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


Type: oligosaccharide / Mass: 586.542 Da / Num. of mol.: 6
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
#7: Polysaccharide N-acetyl-alpha-neuraminic acid-(2-3)-beta-D-galactopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 674.604 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DNeup5Aca2-3DGalpb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/3,3,2/[a2122h-1b_1-5_2*NCC/3=O][a2112h-1b_1-5][Aad21122h-2a_2-6_5*NCC/3=O]/1-2-3/a4-b1_b3-c2WURCSPDB2Glycan 1.1.0
[][b-D-GlcpNAc]{[(4+1)][b-D-Galp]{[(3+2)][a-D-Neup5Ac]{}}}LINUCSPDB-CARE
#8: 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 / 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
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

Component
IDNameTypeEntity IDParent-IDSource
1split trimer of H5N1 HA-FabH5M9 complex from symmetric filamentCOMPLEX#1-#40RECOMBINANT
2FabH5M9COMPLEX#3-#41RECOMBINANT
3H5N1 HACOMPLEX#1-#21RECOMBINANT
Molecular weight
IDEntity assembly-IDValue (°)Experimental value
110.70 MDaYES
210.05 MDaYES
310.2 MDaYES
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
21Influenza A virus (strain A/Vietnam/1203/2004 H5N1)284218
32Mus musculus (house mouse)10090
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
21Homo sapiens (human)9606
32Homo sapiens (human)9606
Details of virusEmpty: NO / Enveloped: NO / Isolate: OTHER / Type: VIRUS-LIKE PARTICLE
Natural hostOrganism: Homo sapiens
Buffer solutionpH: 8
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 FIELD / Nominal defocus max: 3000 nm / Nominal defocus min: 2000 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K2 SUMMIT (4k x 4k)

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Processing

EM softwareName: PHENIX / Category: model refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.45 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 216514 / Symmetry type: POINT
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00323118
ELECTRON MICROSCOPYf_angle_d0.69431377
ELECTRON MICROSCOPYf_dihedral_angle_d8.8393309
ELECTRON MICROSCOPYf_chiral_restr0.0573543
ELECTRON MICROSCOPYf_plane_restr0.0084011

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