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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-9139 | |||||||||
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Title | H7 HA0 in complex with Fab from H7.5 IgG | |||||||||
![]() | H7 HA0 in complex with Fv from H7.5 IgG | |||||||||
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Function / homology | ![]() viral budding from plasma membrane / clathrin-dependent endocytosis of virus by host cell / membrane => GO:0016020 / 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 | |||||||||
Biological species | ![]() ![]() ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.5 Å | |||||||||
![]() | Pallesen J / Turner HL / Ward AB | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Potent anti-influenza H7 human monoclonal antibody induces separation of hemagglutinin receptor-binding head domains. Authors: Hannah L Turner / Jesper Pallesen / Shanshan Lang / Sandhya Bangaru / Sarah Urata / Sheng Li / Christopher A Cottrell / Charles A Bowman / James E Crowe / Ian A Wilson / Andrew B Ward / ![]() Abstract: Seasonal influenza virus infections can cause significant morbidity and mortality, but the threat from the emergence of a new pandemic influenza strain might have potentially even more devastating ...Seasonal influenza virus infections can cause significant morbidity and mortality, but the threat from the emergence of a new pandemic influenza strain might have potentially even more devastating consequences. As such, there is intense interest in isolating and characterizing potent neutralizing antibodies that target the hemagglutinin (HA) viral surface glycoprotein. Here, we use cryo-electron microscopy (cryoEM) to decipher the mechanism of action of a potent HA head-directed monoclonal antibody (mAb) bound to an influenza H7 HA. The epitope of the antibody is not solvent accessible in the compact, prefusion conformation that typifies all HA structures to date. Instead, the antibody binds between HA head protomers to an epitope that must be partly or transiently exposed in the prefusion conformation. The "breathing" of the HA protomers is implied by the exposure of this epitope, which is consistent with metastability of class I fusion proteins. This structure likely therefore represents an early structural intermediate in the viral fusion process. Understanding the extent of transient exposure of conserved neutralizing epitopes also may lead to new opportunities to combat influenza that have not been appreciated previously. | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 59.5 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 23.1 KB 23.1 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 9 KB | Display | ![]() |
Images | ![]() | 69.6 KB | ||
Others | ![]() ![]() ![]() | 58.4 MB 49.7 MB 49.7 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6mlmMC ![]() 9142C ![]() 9143C ![]() 9144C ![]() 9145C M: atomic model generated by this map C: citing same article ( |
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Similar structure data |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
File | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | H7 HA0 in complex with Fv from H7.5 IgG | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.02 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Additional map: H7 HA0 in complex with Fv from H7.5 IgG
File | emd_9139_additional.map | ||||||||||||
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Annotation | H7 HA0 in complex with Fv from H7.5 IgG | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: H7 HA0 in complex with Fv from H7.5 IgG
File | emd_9139_half_map_1.map | ||||||||||||
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Annotation | H7 HA0 in complex with Fv from H7.5 IgG | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: H7 HA0 in complex with Fv from H7.5 IgG
File | emd_9139_half_map_2.map | ||||||||||||
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Annotation | H7 HA0 in complex with Fv from H7.5 IgG | ||||||||||||
Projections & Slices |
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Density Histograms |
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Sample components
-Entire : H7 HA0 in complex with H7.5 Fab
Entire | Name: H7 HA0 in complex with H7.5 Fab |
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Components |
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-Supramolecule #1: H7 HA0 in complex with H7.5 Fab
Supramolecule | Name: H7 HA0 in complex with H7.5 Fab / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#4 |
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Source (natural) | Organism: ![]() |
Recombinant expression | Organism: ![]() |
Molecular weight | Theoretical: 230 KDa |
-Macromolecule #1: Hemagglutinin HA1 chain
Macromolecule | Name: Hemagglutinin HA1 chain / type: protein_or_peptide / ID: 1 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 36.01882 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: MNTQILAFIA CVLTGVKGDK ICLGHHAVAN GTKVNTLTER GIEVVNATET VETTNIKKIC TQGKRPTDLG QCGLLGTLIG PPQCDQFLE FSSDLIIERR EGTDICYPGR FTNEESLRQI LRRSGGIGKE SMGFTYSGIR TNGATSACTR SGSSFYAEMK W LLSNSDNA ...String: MNTQILAFIA CVLTGVKGDK ICLGHHAVAN GTKVNTLTER GIEVVNATET VETTNIKKIC TQGKRPTDLG QCGLLGTLIG PPQCDQFLE FSSDLIIERR EGTDICYPGR FTNEESLRQI LRRSGGIGKE SMGFTYSGIR TNGATSACTR SGSSFYAEMK W LLSNSDNA AFPQMTKAYR NPRNKPALII WGVHHSESVS EQTKLYGSGN KLITVRSSKY QQSFTPNPGA RRIDFHWLLL DP NDTVTFT FNGAFIAPDR TSFFRGESLG VQSDAPLDSS CRGDCFHSGG TIVSSLPFQN INSRTVGKCP RYVKQKSLLL ATG MRNVPE KP |
-Macromolecule #2: Hemagglutinin HA2 chain
Macromolecule | Name: Hemagglutinin HA2 chain / type: protein_or_peptide / ID: 2 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() ![]() |
Molecular weight | Theoretical: 25.583803 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: KPRGLFGAIA GFIENGWEGL INGWYGFRHQ NAQGEGTAAD YKSTQSAIDQ ITGKLNRLIG KTNQQFELID NEFNEIEQQI GNVINWTRD AMTEIWSYNA ELLVAMENQH TIDLADSEMS KLYERVKKQL RENAEEDGTG CFEIFHKCDD QCMESIRNNT Y DHTQYRTE ...String: KPRGLFGAIA GFIENGWEGL INGWYGFRHQ NAQGEGTAAD YKSTQSAIDQ ITGKLNRLIG KTNQQFELID NEFNEIEQQI GNVINWTRD AMTEIWSYNA ELLVAMENQH TIDLADSEMS KLYERVKKQL RENAEEDGTG CFEIFHKCDD QCMESIRNNT Y DHTQYRTE SLQNRIQIDP VKLSSGYKDI ILWFSFGASC FLLLAIAMGL VFICIKNGNM QCTICI |
-Macromolecule #3: Heavy chain Fv of H7.5 Fab
Macromolecule | Name: Heavy chain Fv of H7.5 Fab / type: protein_or_peptide / ID: 3 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 23.441402 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: VQLVQSGAEV KKPGASVKVS CKASGYTLTR YYFHWVRQAP GQGFEWMGII NPNGGGTSYA QKFGDRVIMT SDMSTSTIYM ELSSLRSED TAVYYCARDM PYYHDSGGPL FDLWGQGTLV TVSSASTKGP SVFPLAPSGG TAALGCLVKD YFPEPVTVSW N SGALTSGV ...String: VQLVQSGAEV KKPGASVKVS CKASGYTLTR YYFHWVRQAP GQGFEWMGII NPNGGGTSYA QKFGDRVIMT SDMSTSTIYM ELSSLRSED TAVYYCARDM PYYHDSGGPL FDLWGQGTLV TVSSASTKGP SVFPLAPSGG TAALGCLVKD YFPEPVTVSW N SGALTSGV HTFPAVLQSS GLYSLSSVVT VPSSSLGTQT YICNVNHKPS NTKVDKKVEP K |
-Macromolecule #4: Light chain Fv of H7.5 Fab
Macromolecule | Name: Light chain Fv of H7.5 Fab / type: protein_or_peptide / ID: 4 / Number of copies: 3 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 23.340836 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: EIVMTQSPSS LSASVGDRVT ITCRPSQSIS TFLNWYEQKP GKAPKLLIYD ASSLQSGVPS RFSGSGSGTE FTLTISSLQP EDFATYYCQ QSFSTPYTFG QGTRLEIKRT VAAPSVFIFP PSDEQLKSGT ASVVCLLNNF YPREAKVQWK VDNALQSGNS Q ESVTEQDS ...String: EIVMTQSPSS LSASVGDRVT ITCRPSQSIS TFLNWYEQKP GKAPKLLIYD ASSLQSGVPS RFSGSGSGTE FTLTISSLQP EDFATYYCQ QSFSTPYTFG QGTRLEIKRT VAAPSVFIFP PSDEQLKSGT ASVVCLLNNF YPREAKVQWK VDNALQSGNS Q ESVTEQDS KDSTYSLSST LTLSKADYEK HKVYACEVTH QGLSSPVTKS FNRGE |
-Macromolecule #5: 2-acetamido-2-deoxy-beta-D-glucopyranose
Macromolecule | Name: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 5 / Number of copies: 9 / Formula: NAG |
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Molecular weight | Theoretical: 221.208 Da |
Chemical component information | ![]() ChemComp-NAG: |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.4 |
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Grid | Details: unspecified |
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: COUNTING / Average exposure time: 7.0 sec. / Average electron dose: 67.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | C2 aperture diameter: 70.0 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |