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- EMDB-9635: The structure of Enterovirus D68 A-particle triggered by an unkno... -

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Basic information

Entry
Database: EMDB / ID: EMD-9635
TitleThe structure of Enterovirus D68 A-particle triggered by an unknown stimulus
Map data
SampleEnterovirus D68:
virus / (nucleic-acidNucleic acid) x 3
Biological speciesEnterovirus D68
Methodsingle particle reconstruction / cryo EM / Resolution: 4.4 Å
AuthorsZheng QB / Zhu R / Xu LF / He MZ / Yan XD / Cheng T / Li SW
CitationJournal: Nat Microbiol / Year: 2019
Title: Atomic structures of enterovirus D68 in complex with two monoclonal antibodies define distinct mechanisms of viral neutralization.
Authors: Qingbing Zheng / Rui Zhu / Longfa Xu / Maozhou He / Xiaodong Yan / Dongxiao Liu / Zhichao Yin / Yangtao Wu / Yongchao Li / Lisheng Yang / Wangheng Hou / Shuxuan Li / Zizhen Li / Zhenqin Chen ...Authors: Qingbing Zheng / Rui Zhu / Longfa Xu / Maozhou He / Xiaodong Yan / Dongxiao Liu / Zhichao Yin / Yangtao Wu / Yongchao Li / Lisheng Yang / Wangheng Hou / Shuxuan Li / Zizhen Li / Zhenqin Chen / Zhihai Li / Hai Yu / Ying Gu / Jun Zhang / Timothy S Baker / Z Hong Zhou / Barney S Graham / Tong Cheng / Shaowei Li / Ningshao Xia /
Abstract: Enterovirus D68 (EV-D68) undergoes structural transformation between mature, cell-entry intermediate (A-particle) and empty forms throughout its life cycle. Structural information for the various ...Enterovirus D68 (EV-D68) undergoes structural transformation between mature, cell-entry intermediate (A-particle) and empty forms throughout its life cycle. Structural information for the various forms and antibody-bound capsids will facilitate the development of effective vaccines and therapeutics against EV-D68 infection, which causes childhood respiratory and paralytic diseases worldwide. Here, we report the structures of three EV-D68 capsid states representing the virus at major phases. We further describe two original monoclonal antibodies (15C5 and 11G1) with distinct structurally defined mechanisms for virus neutralization. 15C5 and 11G1 engage the capsid loci at icosahedral three-fold and five-fold axes, respectively. To block viral attachment, 15C5 binds three forms of capsids, and triggers mature virions to transform into A-particles, mimicking engagement by the functional receptor ICAM-5, whereas 11G1 exclusively recognizes the A-particle. Our data provide a structural and molecular explanation for the transition of picornavirus capsid conformations and demonstrate distinct mechanisms for antibody-mediated neutralization.
History
DepositionAug 27, 2018-
Header (metadata) releaseNov 7, 2018-
Map releaseNov 7, 2018-
UpdateDec 26, 2018-
Current statusDec 26, 2018Processing site: PDBj / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.048
  • Imaged by UCSF Chimera
  • Download
  • Surface view colored by radius
  • Surface level: 0.048
  • Imaged by UCSF Chimera
  • Download
Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

Downloads & links

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Map

FileDownload / File: emd_9635.map.gz / Format: CCP4 / Size: 347.6 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.13 Å/pix.
x 450 pix.
= 507.6 Å
1.13 Å/pix.
x 450 pix.
= 507.6 Å
1.13 Å/pix.
x 450 pix.
= 507.6 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.128 Å
Density
Contour LevelBy AUTHOR: 0.048 / Movie #1: 0.048
Minimum - Maximum-0.10020681 - 0.13266715
Average (Standard dev.)0.001057365 (±0.01054751)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions450450450
Spacing450450450
CellA=B=C: 507.6 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.1281.1281.128
M x/y/z450450450
origin x/y/z0.0000.0000.000
length x/y/z507.600507.600507.600
α/β/γ90.00090.00090.000
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS450450450
D min/max/mean-0.1000.1330.001

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Supplemental data

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Sample components

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Entire Enterovirus D68

EntireName: Enterovirus D68 / Number of components: 4

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Component #1: virus, Enterovirus D68

VirusName: Enterovirus D68Enterovirus 68 / Class: VIRION / Empty: No / Enveloped: No / Isolate: STRAIN
SpeciesSpecies: Enterovirus D68

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Component #2: nucleic-acid, VP1

nucleic acidName: VP1 / Class: OTHER / Structure: OTHER / Synthetic: No
Sequence: IESIIKTATD TVKSEINAEL GVVPSLNAVE TGATSNTEPE EAIQTRTVIN QHGVSETLVE NFLSRAALVS KRSFEYKDHT SSAAQADKNF FKWTINTRSF VQLRRKLELF TYLRFDAEIT ILTTVAVNGS GNNTYVGLPD LTLQAMFVPT GALTPEKQDS FHWQSGSNAS ...Sequence:
IESIIKTATD TVKSEINAEL GVVPSLNAVE TGATSNTEPE EAIQTRTVIN QHGVSETLVE NFLSRAALVS KRSFEYKDHT SSAAQADKNF FKWTINTRSF VQLRRKLELF TYLRFDAEIT ILTTVAVNGS GNNTYVGLPD LTLQAMFVPT GALTPEKQDS FHWQSGSNAS VFFKISDPPA RITIPFMCIN SAYSVFYDGF AGFEKNGLYG INPADTIGNL CVRIVNEHQP VGFTVTVRVY MKPKHIKAWA PRPPRTLPYM SIANANYKGK ERAPNALNAI IGNRDSVKTM PHNIV
SourceSpecies: Enterovirus D68

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Component #3: nucleic-acid, VP2

nucleic acidName: VP2 / Class: OTHER / Structure: OTHER / Synthetic: No
Sequence: SPSAEACGYS DRVLQLKLGN SAIVTQEAAN YCCAYGEWPN YLPDHEAVAI DKPTQPETAT DRFYTLKSVK WETGSTGWWW KLPDALNNIG MFGQNVQHHY LYRSGFLIHV QCNATKFHQG ALLVVAIPEH QRGAHNTNTS PGFDDIMKGE EGGTFNHPYV LDDGTSLACA ...Sequence:
SPSAEACGYS DRVLQLKLGN SAIVTQEAAN YCCAYGEWPN YLPDHEAVAI DKPTQPETAT DRFYTLKSVK WETGSTGWWW KLPDALNNIG MFGQNVQHHY LYRSGFLIHV QCNATKFHQG ALLVVAIPEH QRGAHNTNTS PGFDDIMKGE EGGTFNHPYV LDDGTSLACA TIFPHQWINL RTNNSATIVL PWMNAAPMDF PLRHNQWTLA IIPVVPLGTR TTSSMVPITV SIAPMCCEFN GLRHAITQ
SourceSpecies: Enterovirus D68

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Component #4: nucleic-acid, VP3

nucleic acidName: VP3 / Class: OTHER / Structure: OTHER / Synthetic: No
Sequence: GVPTYLLPGS GQFLTTDDHS SAPALPCFNP TPEMHIPGQV RNMLEVVQVE SMMEINNTES AVGMERLKVD ISALTDVDQL LFNIPLDIQL DGPLRNTLVG NISRYYTHWS GSLEMTFMFC GSFMATGKLI LCYTPPGGSC PTTRETAMLG THIVWDFGLQ SSVTLIIPWI ...Sequence:
GVPTYLLPGS GQFLTTDDHS SAPALPCFNP TPEMHIPGQV RNMLEVVQVE SMMEINNTES AVGMERLKVD ISALTDVDQL LFNIPLDIQL DGPLRNTLVG NISRYYTHWS GSLEMTFMFC GSFMATGKLI LCYTPPGGSC PTTRETAMLG THIVWDFGLQ SSVTLIIPWI SGSHYRMFNN DAKSTNANVG YVTCFMQTNL IVPSESSDTC SLIGFIAAKD DFSLRLMRDS PDIGQLDHLH AAEAAYQ
SourceSpecies: Enterovirus D68

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Experimental details

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Sample preparation

SpecimenSpecimen state: Particle / Method: cryo EM
Sample solutionpH: 7.4
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Tecnai F30 / Image courtesy: FEI Company
ImagingMicroscope: FEI TECNAI F30
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Electron dose: 25 e/Å2 / Illumination mode: FLOOD BEAM
LensImaging mode: BRIGHT FIELD
Specimen HolderModel: OTHER
CameraDetector: FEI FALCON II (4k x 4k)

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Image processing

ProcessingMethod: single particle reconstruction / Number of projections: 2491
3D reconstructionSoftware: RELION / Resolution: 4.4 Å / Resolution method: FSC 0.143 CUT-OFF
FSC plot (resolution estimation)

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