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- EMDB-25103: CryoEM structure of Venezuelan Equine Encephalitis virus (VEEV) T... -
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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-25103 | |||||||||
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Title | CryoEM structure of Venezuelan Equine Encephalitis virus (VEEV) TC-83 strain VLP in complex with Fab hVEEV-63 | |||||||||
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Function / homology | ![]() togavirin / T=4 icosahedral viral capsid / symbiont-mediated suppression of host gene expression / symbiont-mediated suppression of host toll-like receptor signaling pathway / clathrin-dependent endocytosis of virus by host cell / host cell cytoplasm / serine-type endopeptidase activity / fusion of virus membrane with host endosome membrane / viral envelope / host cell nucleus ...togavirin / T=4 icosahedral viral capsid / symbiont-mediated suppression of host gene expression / symbiont-mediated suppression of host toll-like receptor signaling pathway / clathrin-dependent endocytosis of virus by host cell / host cell cytoplasm / serine-type endopeptidase activity / fusion of virus membrane with host endosome membrane / viral envelope / host cell nucleus / virion attachment to host cell / host cell plasma membrane / structural molecule activity / virion membrane / proteolysis / RNA binding / membrane Similarity search - Function | |||||||||
Biological species | ![]() ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 4.0 Å | |||||||||
![]() | Binshtein E / Crowe JE | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Neutralizing antibodies protect mice against Venezuelan equine encephalitis virus aerosol challenge. Authors: Natasha M Kafai / Lauren E Williamson / Elad Binshtein / Soila Sukupolvi-Petty / Christina L Gardner / Jaclyn Liu / Samantha Mackin / Arthur S Kim / Nurgun Kose / Robert H Carnahan / Ana ...Authors: Natasha M Kafai / Lauren E Williamson / Elad Binshtein / Soila Sukupolvi-Petty / Christina L Gardner / Jaclyn Liu / Samantha Mackin / Arthur S Kim / Nurgun Kose / Robert H Carnahan / Ana Jung / Lindsay Droit / Douglas S Reed / Scott A Handley / William B Klimstra / James E Crowe / Michael S Diamond / ![]() Abstract: Venezuelan equine encephalitis virus (VEEV) remains a risk for epidemic emergence or use as an aerosolized bioweapon. To develop possible countermeasures, we isolated VEEV-specific neutralizing ...Venezuelan equine encephalitis virus (VEEV) remains a risk for epidemic emergence or use as an aerosolized bioweapon. To develop possible countermeasures, we isolated VEEV-specific neutralizing monoclonal antibodies (mAbs) from mice and a human immunized with attenuated VEEV strains. Functional assays and epitope mapping established that potently inhibitory anti-VEEV mAbs bind distinct antigenic sites in the A or B domains of the E2 glycoprotein and block multiple steps in the viral replication cycle including attachment, fusion, and egress. A 3.2-Å cryo-electron microscopy reconstruction of VEEV virus-like particles bound by a human Fab suggests that antibody engagement of the B domain may result in cross-linking of neighboring spikes to prevent conformational requirements for viral fusion. Prophylaxis or postexposure therapy with these mAbs protected mice against lethal aerosol challenge with VEEV. Our study defines functional and structural mechanisms of mAb protection and suggests that multiple antigenic determinants on VEEV can be targeted for vaccine or antibody-based therapeutic development. | |||||||||
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 | ![]() | 337.9 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 19.5 KB 19.5 KB | Display Display | ![]() |
Images | ![]() | 271.1 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 535.1 KB | Display | ![]() |
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Full document | ![]() | 534.7 KB | Display | |
Data in XML | ![]() | 8.3 KB | Display | |
Data in CIF | ![]() | 9.6 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7sfvMC ![]() 7sfuC ![]() 7sfwC C: citing same article ( M: atomic model generated by this map |
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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
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Voxel size | X=Y=Z: 1.54163 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
-Entire : Venezuelan equine encephalitis virus (strain TC-83)
Entire | Name: ![]() |
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Components |
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-Supramolecule #1: Venezuelan equine encephalitis virus (strain TC-83)
Supramolecule | Name: Venezuelan equine encephalitis virus (strain TC-83) / type: virus / ID: 1 / Parent: 0 / Macromolecule list: #1-#5 / NCBI-ID: 11037 Sci species name: Venezuelan equine encephalitis virus (strain TC-83) Virus type: VIRUS-LIKE PARTICLE / Virus isolate: OTHER / Virus enveloped: Yes / Virus empty: Yes |
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Host system | Organism: ![]() |
-Macromolecule #1: Spike glycoprotein E1
Macromolecule | Name: Spike glycoprotein E1 / type: protein_or_peptide / ID: 1 / Number of copies: 4 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() Strain: TC-83 |
Molecular weight | Theoretical: 47.69982 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: YEHATTMPSQ AGISYNTIVN RAGYAPLPIS ITPTKIKLIP TVNLEYVTCH YKTGMDSPAI KCCGSQECTP TYRPDEQCKV FTGVYPFMW GGAYCFCDTE NTQVSKAYVM KSDDCLADHA EAYKAHTASV QAFLNITVGE HSIVTTVYVN GETPVNFNGV K ITAGPLST ...String: YEHATTMPSQ AGISYNTIVN RAGYAPLPIS ITPTKIKLIP TVNLEYVTCH YKTGMDSPAI KCCGSQECTP TYRPDEQCKV FTGVYPFMW GGAYCFCDTE NTQVSKAYVM KSDDCLADHA EAYKAHTASV QAFLNITVGE HSIVTTVYVN GETPVNFNGV K ITAGPLST AWTPFDRKIV QYAGEIYNYD FPEYGAGQPG AFGDIQSRTV SSSDLYANTN LVLQRPKAGA IHVPYTQAPS GF EQWKKDK APSLKFTAPF GCEIYTNPIR AENCAVGSIP LAFDIPDALF TRVSETPTLS AAECTLNECV YSSDFGGIAT VKY SASKSG KCAVHVPSGT ATLKEAAVEL TEQGSATIHF STANIHPEFR LQICTSYVTC KGDCHPPKDH IVTHPQYHAQ TFTA AVSKT AWTWLTSLLG GSAVIIIIGL VLATIVAMYV LTNQK |
-Macromolecule #2: Spike glycoprotein E2
Macromolecule | Name: Spike glycoprotein E2 / type: protein_or_peptide / ID: 2 / Number of copies: 4 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() Strain: TC-83 |
Molecular weight | Theoretical: 46.556094 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: STEELFNEYK LTRPYMARCI RCAVGSCHSP IAIEAVKSDG HDGYVRLQTS SQYGLDSSGN LKGRTMRYDM HGTIKEIPLH QVSLYTSRP CHIVDGHGYF LLARCPAGDS ITMEFKKDSV RHSCSVPYEV KFNPVGRELY THPPEHGVEQ ACQVYAHDAQ N RGAYVEMH ...String: STEELFNEYK LTRPYMARCI RCAVGSCHSP IAIEAVKSDG HDGYVRLQTS SQYGLDSSGN LKGRTMRYDM HGTIKEIPLH QVSLYTSRP CHIVDGHGYF LLARCPAGDS ITMEFKKDSV RHSCSVPYEV KFNPVGRELY THPPEHGVEQ ACQVYAHDAQ N RGAYVEMH LPGSEVDSSL VSLSGSSVTV TPPDGTSALV ECECGGTKIS ETINKTKQFS QCTKKEQCRA YRLQNDKWVY NS DKLPKAA GATLKGKLHV PFLLADGKCT VPLAPEPMIT FGFRSVSLKL HPKNPTYLIT RQLADEPHYT HELISEPAVR NFT VTEKGW EFVWGNHPPK RFWAQETAPG NPHGLPHEVI THYYHRYPMS TILGLSICAA IATVSVAAST WLFCRSRVAC LTPY RLTPN ARIPFCLAVL CCA |
-Macromolecule #3: Capsid protein
Macromolecule | Name: Capsid protein / type: protein_or_peptide / ID: 3 / Number of copies: 4 / Enantiomer: LEVO / EC number: togavirin |
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Source (natural) | Organism: ![]() Strain: TC-83 |
Molecular weight | Theoretical: 17.781336 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: RMVMKLESDK TFPIMLEGKI NGYACVVGGK LFRPMHVEGK IDNDVLAALK TKKASKYDLE YADVPQNMRA DTFKYTHEKP QGYYSWHHG AVQYENGRFT VPKGVGAKGD SGRPILDNQG RVVAIVLGGV NEGSRTALSV VMWNEKGVTV KYTPENCEQW |
-Macromolecule #4: hVEEV-63 Fab heavy chain
Macromolecule | Name: hVEEV-63 Fab heavy chain / type: protein_or_peptide / ID: 4 / Number of copies: 4 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 23.197908 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: QVQLVQSGAE VKKPGASVKV SCKSSGYTFT NYIIHWVRQA PGQRLEWMGW INAGNGNTKY SQKFQGRISV TRDTSASAAY MELSSLKSE DTALYYCATL QMDYGGNGDL DYWGQGTLVT VSSASTKGPS VFPLAPSSKS TSGGTAALGC LVKDYFPEPV T VSWNSGAL ...String: QVQLVQSGAE VKKPGASVKV SCKSSGYTFT NYIIHWVRQA PGQRLEWMGW INAGNGNTKY SQKFQGRISV TRDTSASAAY MELSSLKSE DTALYYCATL QMDYGGNGDL DYWGQGTLVT VSSASTKGPS VFPLAPSSKS TSGGTAALGC LVKDYFPEPV T VSWNSGAL TSGVHTFPAV LQSSGLYSLS SVVTVPSSSL GTQTYICNVN HKPSNTKVDK |
-Macromolecule #5: hVEEV-63 Fab light chain
Macromolecule | Name: hVEEV-63 Fab light chain / type: protein_or_peptide / ID: 5 / Number of copies: 4 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 22.480836 KDa |
Recombinant expression | Organism: ![]() |
Sequence | String: YELTQPPSVS VSPGQTARIT CSGDALPKQY VYWYQQKPGQ APVLVIYKDS ERPSGIPERF SGSSSGTTVT LTISGVQAED DADYYCQAA DSSNTEYVFG TGTKVTVLQP KANPTVTLFP PSSEELQANK ATLVCLISDF YPGAVTVAWK ADGSPVKAGV E TTKPSKQS ...String: YELTQPPSVS VSPGQTARIT CSGDALPKQY VYWYQQKPGQ APVLVIYKDS ERPSGIPERF SGSSSGTTVT LTISGVQAED DADYYCQAA DSSNTEYVFG TGTKVTVLQP KANPTVTLFP PSSEELQANK ATLVCLISDF YPGAVTVAWK ADGSPVKAGV E TTKPSKQS NNKYAASSYL SLTPEQWKSH RSYSCQVTHE GSTVEKTVAP T |
-Macromolecule #6: 2-acetamido-2-deoxy-beta-D-glucopyranose
Macromolecule | Name: 2-acetamido-2-deoxy-beta-D-glucopyranose / type: ligand / ID: 6 / Number of copies: 12 / 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: 7.5 |
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Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 293.15 K / Instrument: FEI VITROBOT MARK IV / Details: Lacey Carbon. |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: FEI FALCON IV (4k x 4k) / Detector mode: COUNTING / Digitization - Sampling interval: 14.0 µm / Number grids imaged: 1 / Number real images: 10586 / Average exposure time: 8.14 sec. / Average electron dose: 40.05 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: OTHER / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 1.6 µm / Nominal defocus min: 0.5 µm / Nominal magnification: 75000 |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
-Atomic model buiding 1
Refinement | Space: REAL / Protocol: RIGID BODY FIT |
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Output model | ![]() PDB-7sfv: |