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- EMDB-27951: 9H2 Fab-Sabin poliovirus 1 complex -

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Basic information

Entry
Database: EMDB / ID: EMD-27951
Title9H2 Fab-Sabin poliovirus 1 complex
Map dataCrypsparc sharpened
Sample
  • Virus: Human poliovirus 1 strain Sabin
    • Protein or peptide: Capsid protein VP1
    • Protein or peptide: Capsid protein VP2
    • Protein or peptide: Capsid protein VP3
    • Protein or peptide: Capsid protein VP4
    • Protein or peptide: 9H2 Fab heavy chain
    • Protein or peptide: 9H2 Fab light chain
KeywordsComplex / Fab / poliovirus / neutralizing / VIRUS-IMMUNE SYSTEM complex
Function / homology
Function and homology information


symbiont-mediated suppression of host translation initiation / positive stranded viral RNA replication / RNA-protein covalent cross-linking / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of RIG-I activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MDA-5 activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MAVS activity / picornain 2A / symbiont-mediated suppression of host mRNA export from nucleus / ribonucleoside triphosphate phosphatase activity / symbiont genome entry into host cell via pore formation in plasma membrane ...symbiont-mediated suppression of host translation initiation / positive stranded viral RNA replication / RNA-protein covalent cross-linking / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of RIG-I activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MDA-5 activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of MAVS activity / picornain 2A / symbiont-mediated suppression of host mRNA export from nucleus / ribonucleoside triphosphate phosphatase activity / symbiont genome entry into host cell via pore formation in plasma membrane / picornain 3C / T=pseudo3 icosahedral viral capsid / host cell cytoplasmic vesicle membrane / viral capsid / : / nucleoside-triphosphate phosphatase / protein complex oligomerization / monoatomic ion channel activity / host cell cytoplasm / receptor-mediated endocytosis of virus by host cell / RNA helicase activity / DNA replication / induction by virus of host autophagy / symbiont entry into host cell / RNA-directed RNA polymerase / symbiont-mediated suppression of host gene expression / viral RNA genome replication / cysteine-type endopeptidase activity / RNA-dependent RNA polymerase activity / DNA-templated transcription / host cell nucleus / virion attachment to host cell / structural molecule activity / proteolysis / RNA binding / ATP binding / membrane / metal ion binding / cytoplasm
Similarity search - Function
Poliovirus 3A protein-like / Poliovirus 3A protein like / Picornavirus 2B protein / Poliovirus core protein 3a, soluble domain / Picornavirus 2B protein / Peptidase C3, picornavirus core protein 2A / Picornavirus core protein 2A / Picornavirus coat protein VP4 / Picornavirus coat protein (VP4) / Picornavirales 3C/3C-like protease domain ...Poliovirus 3A protein-like / Poliovirus 3A protein like / Picornavirus 2B protein / Poliovirus core protein 3a, soluble domain / Picornavirus 2B protein / Peptidase C3, picornavirus core protein 2A / Picornavirus core protein 2A / Picornavirus coat protein VP4 / Picornavirus coat protein (VP4) / Picornavirales 3C/3C-like protease domain / Picornavirales 3C/3C-like protease domain profile. / Peptidase C3A/C3B, picornaviral / 3C cysteine protease (picornain 3C) / Picornavirus capsid / picornavirus capsid protein / Helicase, superfamily 3, single-stranded RNA virus / Superfamily 3 helicase of positive ssRNA viruses domain profile. / Helicase, superfamily 3, single-stranded DNA/RNA virus / RNA helicase / Picornavirus/Calicivirus coat protein / Viral coat protein subunit / RNA-directed RNA polymerase, C-terminal domain / Viral RNA-dependent RNA polymerase / Reverse transcriptase/Diguanylate cyclase domain / RNA-directed RNA polymerase, catalytic domain / RdRp of positive ssRNA viruses catalytic domain profile. / Peptidase S1, PA clan, chymotrypsin-like fold / Peptidase S1, PA clan / DNA/RNA polymerase superfamily / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
Genome polyprotein / Genome polyprotein / Genome polyprotein
Similarity search - Component
Biological speciesHuman poliovirus 1 strain Sabin / Homo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.15 Å
AuthorsCharnesky AJ
Funding support United States, 3 items
OrganizationGrant numberCountry
National Institutes of Health/Office of the DirectorOD026822-01 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)AI107121-01 United States
Bill & Melinda Gates FoundationOPP1135787 United States
CitationJournal: Nat Commun / Year: 2023
Title: A human monoclonal antibody binds within the poliovirus receptor-binding site to neutralize all three serotypes.
Authors: Andrew J Charnesky / Julia E Faust / Hyunwook Lee / Rama Devudu Puligedda / Daniel J Goetschius / Nadia M DiNunno / Vaskar Thapa / Carol M Bator / Sung Hyun Joseph Cho / Rahnuma Wahid / ...Authors: Andrew J Charnesky / Julia E Faust / Hyunwook Lee / Rama Devudu Puligedda / Daniel J Goetschius / Nadia M DiNunno / Vaskar Thapa / Carol M Bator / Sung Hyun Joseph Cho / Rahnuma Wahid / Kutub Mahmood / Scott Dessain / Konstantin M Chumakov / Amy Rosenfeld / Susan L Hafenstein /
Abstract: Global eradication of poliovirus remains elusive, and it is critical to develop next generation vaccines and antivirals. In support of this goal, we map the epitope of human monoclonal antibody 9H2 ...Global eradication of poliovirus remains elusive, and it is critical to develop next generation vaccines and antivirals. In support of this goal, we map the epitope of human monoclonal antibody 9H2 which is able to neutralize the three serotypes of poliovirus. Using cryo-EM we solve the near-atomic structures of 9H2 fragments (Fab) bound to capsids of poliovirus serotypes 1, 2, and 3. The Fab-virus complexes show that Fab interacts with the same binding mode for each serotype and at the same angle of interaction relative to the capsid surface. For each of the Fab-virus complexes, we find that the binding site overlaps with the poliovirus receptor (PVR) binding site and maps across and into a depression in the capsid called the canyon. No conformational changes to the capsid are induced by Fab binding for any complex. Competition binding experiments between 9H2 and PVR reveal that 9H2 impedes receptor binding. Thus, 9H2 outcompetes the receptor to neutralize poliovirus. The ability to neutralize all three serotypes, coupled with the critical importance of the conserved receptor binding site make 9H2 an attractive antiviral candidate for future development.
History
DepositionAug 26, 2022-
Header (metadata) releaseJun 21, 2023-
Map releaseJun 21, 2023-
UpdateOct 18, 2023-
Current statusOct 18, 2023Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_27951.png

Downloads & links

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Map

FileDownload / File: emd_27951.map.gz / Format: CCP4 / Size: 669.9 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationCrypsparc sharpened
Voxel sizeX=Y=Z: 1.1 Å
Density
Contour LevelBy AUTHOR: 0.5
Minimum - Maximum-3.727954 - 6.117351
Average (Standard dev.)0.0023343184 (±0.23297809)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin-280-280-280
Dimensions560560560
Spacing560560560
CellA=B=C: 616.0 Å
α=β=γ: 90.0 °

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Supplemental data

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Additional map: DeepEMhancer sharpened

Fileemd_27951_additional_1.map
AnnotationDeepEMhancer sharpened
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Half Map A

Fileemd_27951_half_map_1.map
AnnotationHalf Map A
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Half Map B

Fileemd_27951_half_map_2.map
AnnotationHalf Map B
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Human poliovirus 1 strain Sabin

EntireName: Human poliovirus 1 strain Sabin
Components
  • Virus: Human poliovirus 1 strain Sabin
    • Protein or peptide: Capsid protein VP1
    • Protein or peptide: Capsid protein VP2
    • Protein or peptide: Capsid protein VP3
    • Protein or peptide: Capsid protein VP4
    • Protein or peptide: 9H2 Fab heavy chain
    • Protein or peptide: 9H2 Fab light chain

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Supramolecule #1: Human poliovirus 1 strain Sabin

SupramoleculeName: Human poliovirus 1 strain Sabin / type: virus / ID: 1 / Parent: 0 / Macromolecule list: all / NCBI-ID: 12082 / Sci species name: Human poliovirus 1 strain Sabin / Virus type: VIRION / Virus isolate: SEROTYPE / Virus enveloped: No / Virus empty: No
Host (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Capsid protein VP1

MacromoleculeName: Capsid protein VP1 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Human poliovirus 1 strain Sabin / Strain: Sabin
Molecular weightTheoretical: 31.317158 KDa
SequenceString: TSRDALPNTE ASGPAHSKEI PALTAVETGA TNPLVPSDTV QTRHVVQHRS RSESSIESFF ARGACVAIIT VDNSASTKNK DKLFTVWKI TYKDTVQLRR KLEFFTYSRF DMEFTFVVTA NFTETNNGHA LNQVYQIMYV PPGAPVPEKW DDYTWQTSSN P SIFYTYGT ...String:
TSRDALPNTE ASGPAHSKEI PALTAVETGA TNPLVPSDTV QTRHVVQHRS RSESSIESFF ARGACVAIIT VDNSASTKNK DKLFTVWKI TYKDTVQLRR KLEFFTYSRF DMEFTFVVTA NFTETNNGHA LNQVYQIMYV PPGAPVPEKW DDYTWQTSSN P SIFYTYGT APARISVPYV GISNAYSHFY DGFSKVPLKD QSAALGDSLY GAASLNDFGI LAVRVVNDHN PTKVTSKIRV YL KPKHIRV WCPRPPRAVA YYGPGVDYKD GTLTPLSTKD LTTY

UniProtKB: Genome polyprotein

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Macromolecule #2: Capsid protein VP2

MacromoleculeName: Capsid protein VP2 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Human poliovirus 1 strain Sabin / Strain: Sabin
Molecular weightTheoretical: 29.175775 KDa
SequenceString: SDRVLQLTLG NSTITTQEAA NSVVAYGRWP EYLRDSEANP VDQPTEPDVA ACRFYTLDTV SWTKESRGWW WKLPDALRDM GLFGQNMYY HYLGRSGYTV HVQCNASKFH QGALGVFAVP EMCLAGDSNT TTMHTSYQNA NPGEKGGTFT GTFTPDDNQT S PARRFCPV ...String:
SDRVLQLTLG NSTITTQEAA NSVVAYGRWP EYLRDSEANP VDQPTEPDVA ACRFYTLDTV SWTKESRGWW WKLPDALRDM GLFGQNMYY HYLGRSGYTV HVQCNASKFH QGALGVFAVP EMCLAGDSNT TTMHTSYQNA NPGEKGGTFT GTFTPDDNQT S PARRFCPV DYLFGNGTLL GNAFVFPHQI INLRTNNCAT LVLPYVNSLS IDSMVKHNNW GIAILPLAPL NFASESSPEI PI TLTIAPM CCEFNGLRNI TLPRLQ

UniProtKB: Genome polyprotein

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Macromolecule #3: Capsid protein VP3

MacromoleculeName: Capsid protein VP3 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Human poliovirus 1 strain Sabin / Strain: Sabin
Molecular weightTheoretical: 26.281229 KDa
SequenceString: GLPVMNTPGS NQYLTADNFQ SPCALPEFDV TPPIDIPGEV KNMMELAEID TMIPFDLSAK KKNTMEMYRV RLSDKPHTDD PILCLSLSP ASDPRLSHTM LGEILNYYTH WAGSLKFTFL FCGSMMATGK LLVSYAPPGA DPPKKRKEAM LGTHVIWDIG L QSSCTMVV ...String:
GLPVMNTPGS NQYLTADNFQ SPCALPEFDV TPPIDIPGEV KNMMELAEID TMIPFDLSAK KKNTMEMYRV RLSDKPHTDD PILCLSLSP ASDPRLSHTM LGEILNYYTH WAGSLKFTFL FCGSMMATGK LLVSYAPPGA DPPKKRKEAM LGTHVIWDIG L QSSCTMVV PWISNTTYRQ TIDDSFTEGG YISVFYQTRI VVPLSTPREM DILGFVSACN DFSVRLMRDT THIEQKA

UniProtKB: Genome polyprotein

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Macromolecule #4: Capsid protein VP4

MacromoleculeName: Capsid protein VP4 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Human poliovirus 1 strain Sabin / Strain: Sabin
Molecular weightTheoretical: 7.40905 KDa
SequenceString:
GAQVSSQKVG AHENSNRAYG GSTINYTTIN YYRDSASNAA SKQDFSQDPS KFTEPIKDVL IKTSPMLN

UniProtKB: Genome polyprotein

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Macromolecule #5: 9H2 Fab heavy chain

MacromoleculeName: 9H2 Fab heavy chain / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 13.878562 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
LVQSGAELKK PGASVKFSCQ ASGFTFTTYD IHWVRQAPGQ GLEWMGMISP SRDSTIYAQK FQGRVTMTSD TSTSTVYMEL TSLRSEDTA LYYCATASRP SAWVFRSLYT YYYMDVWGTG TTVTV

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Macromolecule #6: 9H2 Fab light chain

MacromoleculeName: 9H2 Fab light chain / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 11.610774 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
SALTQPASVS GSPGQSITIS CTGTITDIGY YNYVSWYQQH PGKAPKLIIF DVTNRPSGVS DRFSGSKSGN TASLTISGLQ AEDEGDYYC FSHRSNNIRV FGGGTKLTVL

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 8
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELDBright-field microscopy / Nominal defocus max: 3.0 µm / Nominal defocus min: 1.0 µm
Image recordingFilm or detector model: FEI FALCON III (4k x 4k) / Average electron dose: 40.0 e/Å2
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: INSILICO MODEL
Initial angle assignmentType: RANDOM ASSIGNMENT
Final angle assignmentType: PROJECTION MATCHING
Final reconstructionApplied symmetry - Point group: I (icosahedral) / Resolution.type: BY AUTHOR / Resolution: 3.15 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 99462

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