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- PDB-5ire: The cryo-EM structure of Zika Virus -

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Basic information

Entry
Database: PDB / ID: 5ire
TitleThe cryo-EM structure of Zika Virus
Components
  • E protein
  • M protein
KeywordsVIRUS / Zika virus
Function / homology
Function and homology information


symbiont-mediated suppression of host JAK-STAT cascade via inhibition of host TYK2 activity / flavivirin / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of STAT2 activity / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of STAT1 activity / ribonucleoside triphosphate phosphatase activity / negative regulation of innate immune response / viral capsid / nucleoside-triphosphate phosphatase / double-stranded RNA binding / 4 iron, 4 sulfur cluster binding ...symbiont-mediated suppression of host JAK-STAT cascade via inhibition of host TYK2 activity / flavivirin / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of STAT2 activity / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of STAT1 activity / ribonucleoside triphosphate phosphatase activity / negative regulation of innate immune response / viral capsid / nucleoside-triphosphate phosphatase / double-stranded RNA binding / 4 iron, 4 sulfur cluster binding / mRNA (guanine-N7)-methyltransferase / methyltransferase cap1 / clathrin-dependent endocytosis of virus by host cell / mRNA (nucleoside-2'-O-)-methyltransferase activity / mRNA 5'-cap (guanine-N7-)-methyltransferase activity / RNA helicase activity / membrane => GO:0016020 / host cell endoplasmic reticulum membrane / host cell perinuclear region of cytoplasm / protein dimerization activity / molecular adaptor activity / RNA helicase / induction by virus of host autophagy / RNA-directed RNA polymerase / viral RNA genome replication / RNA-dependent RNA polymerase activity / serine-type endopeptidase activity / fusion of virus membrane with host endosome membrane / centrosome / viral envelope / lipid binding / symbiont-mediated suppression of host type I interferon-mediated signaling pathway / host cell nucleus / structural molecule activity / virion attachment to host cell / GTP binding / virion membrane / ATP hydrolysis activity / proteolysis / extracellular region / ATP binding / membrane / metal ion binding
Similarity search - Function
Flavivirus envelope glycoprotein M-like / Monooxygenase - #260 / Viral Envelope Glycoprotein; domain 3 / Viral Envelope Glycoprotein, domain 3 / Viral Envelope Glycoprotein, domain 2 / Tick-borne Encephalitis virus Glycoprotein, domain 1 / Viral Envelope Glycoprotein; domain 2 / Tick-borne Encephalitis virus Glycoprotein; domain 1 / Immunoglobulin-like - #350 / Monooxygenase ...Flavivirus envelope glycoprotein M-like / Monooxygenase - #260 / Viral Envelope Glycoprotein; domain 3 / Viral Envelope Glycoprotein, domain 3 / Viral Envelope Glycoprotein, domain 2 / Tick-borne Encephalitis virus Glycoprotein, domain 1 / Viral Envelope Glycoprotein; domain 2 / Tick-borne Encephalitis virus Glycoprotein; domain 1 / Immunoglobulin-like - #350 / Monooxygenase / : / : / Flavivirus envelope glycoprotein E, stem/anchor domain / RNA-directed RNA polymerase, thumb domain, Flavivirus / Flavivirus RNA-directed RNA polymerase, thumb domain / Flavivirus capsid protein C superfamily / Flavivirus non-structural protein NS2B / Flavivirus NS3 helicase, C-terminal helical domain / Genome polyprotein, Flavivirus / Flavivirus non-structural protein NS4A / Flavivirus non-structural protein NS2B / Flavivirus capsid protein C / Flavivirus non-structural protein NS4B / mRNA cap 0/1 methyltransferase / Flavivirus capsid protein C / Flavivirus non-structural protein NS4B / Flavivirus non-structural protein NS4A / Flavivirus NS2B domain profile. / mRNA cap 0 and cap 1 methyltransferase (EC 2.1.1.56 and EC 2.1.1.57) domain profile. / Flavivirus non-structural protein NS2A / Flavivirus non-structural protein NS2A / Flavivirus NS3, petidase S7 / Peptidase S7, Flavivirus NS3 serine protease / Flavivirus NS3 protease (NS3pro) domain profile. / Envelope glycoprotein M, flavivirus / Flavivirus envelope glycoprotein M / RNA-directed RNA polymerase, flavivirus / Flavivirus RNA-directed RNA polymerase, fingers and palm domains / Flavivirus non-structural Protein NS1 / Flavivirus non-structural protein NS1 / Envelope glycoprotein M superfamily, flavivirus / Flavivirus polyprotein propeptide / Flavivirus polyprotein propeptide superfamily / Flavivirus polyprotein propeptide / Flaviviral glycoprotein E, central domain, subdomain 1 / Flaviviral glycoprotein E, central domain, subdomain 2 / Flavivirus envelope glycoprotein E, Stem/Anchor domain / Flavivirus glycoprotein E, immunoglobulin-like domain / Flavivirus envelope glycoprotein E, Stem/Anchor domain superfamily / Flavivirus glycoprotein, immunoglobulin-like domain / Flavivirus glycoprotein central and dimerisation domain / Flavivirus glycoprotein, central and dimerisation domains / Ribosomal RNA methyltransferase, FtsJ domain / FtsJ-like methyltransferase / Flavivirus/Alphavirus glycoprotein, immunoglobulin-like domain superfamily / Flavivirus glycoprotein, central and dimerisation domain superfamily / Flaviviral glycoprotein E, dimerisation domain / Helicase, Ruva Protein; domain 3 / DEAD box, Flavivirus / Flavivirus DEAD domain / helicase superfamily c-terminal domain / Immunoglobulin E-set / Superfamilies 1 and 2 helicase C-terminal domain profile. / Superfamilies 1 and 2 helicase ATP-binding type-1 domain profile. / DEAD-like helicases superfamily / Helicase, C-terminal / Helicase superfamily 1/2, ATP-binding domain / RNA-directed RNA polymerase, catalytic domain / RdRp of positive ssRNA viruses catalytic domain profile. / S-adenosyl-L-methionine-dependent methyltransferase superfamily / Peptidase S1, PA clan, chymotrypsin-like fold / DNA/RNA polymerase superfamily / Peptidase S1, PA clan / Up-down Bundle / Immunoglobulin-like / Sandwich / P-loop containing nucleoside triphosphate hydrolase / 2-Layer Sandwich / Orthogonal Bundle / Mainly Beta / Mainly Alpha / Alpha Beta
Similarity search - Domain/homology
Genome polyprotein / Envelope protein E / Core protein
Similarity search - Component
Biological speciesZika virus
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.8 Å
AuthorsSirohi, D. / Chen, Z. / Sun, L. / Klose, T. / Pierson, T. / Rossmann, M. / Kuhn, R.
Funding support United States, 2items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)R01AI073755 United States
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)R01AI07633 United States
CitationJournal: Science / Year: 2016
Title: The 3.8 Å resolution cryo-EM structure of Zika virus.
Authors: Devika Sirohi / Zhenguo Chen / Lei Sun / Thomas Klose / Theodore C Pierson / Michael G Rossmann / Richard J Kuhn /
Abstract: The recent rapid spread of Zika virus and its unexpected linkage to birth defects and an autoimmune neurological syndrome have generated worldwide concern. Zika virus is a flavivirus like the dengue, ...The recent rapid spread of Zika virus and its unexpected linkage to birth defects and an autoimmune neurological syndrome have generated worldwide concern. Zika virus is a flavivirus like the dengue, yellow fever, and West Nile viruses. We present the 3.8 angstrom resolution structure of mature Zika virus, determined by cryo-electron microscopy (cryo-EM). The structure of Zika virus is similar to other known flavivirus structures, except for the ~10 amino acids that surround the Asn(154) glycosylation site in each of the 180 envelope glycoproteins that make up the icosahedral shell. The carbohydrate moiety associated with this residue, which is recognizable in the cryo-EM electron density, may function as an attachment site of the virus to host cells. This region varies not only among Zika virus strains but also in other flaviviruses, which suggests that differences in this region may influence virus transmission and disease.
History
DepositionMar 13, 2016Deposition site: RCSB / Processing site: RCSB
Revision 1.0Mar 30, 2016Provider: repository / Type: Initial release
Revision 1.1Apr 6, 2016Group: Other
Revision 1.2May 4, 2016Group: Derived calculations
Revision 1.3Sep 13, 2017Group: Author supporting evidence / Data collection / Category: em_software / pdbx_audit_support
Item: _em_software.name / _pdbx_audit_support.funding_organization
Revision 1.4Jul 18, 2018Group: Data collection / Category: em_software / Item: _em_software.name
Revision 1.5Dec 11, 2019Group: Author supporting evidence / Structure summary / Category: em_entity_assembly / pdbx_audit_support
Item: _em_entity_assembly.entity_id_list / _pdbx_audit_support.funding_organization
Revision 2.0Jul 29, 2020Group: Advisory / Atomic model ...Advisory / Atomic model / Data collection / Derived calculations / Structure summary
Category: atom_site / chem_comp ...atom_site / chem_comp / entity / pdbx_branch_scheme / pdbx_chem_comp_identifier / pdbx_entity_branch / pdbx_entity_branch_descriptor / pdbx_entity_branch_link / pdbx_entity_branch_list / pdbx_entity_nonpoly / pdbx_nonpoly_scheme / pdbx_struct_assembly_gen / pdbx_validate_close_contact / struct_asym / struct_conn / struct_site / struct_site_gen
Item: _atom_site.auth_asym_id / _atom_site.auth_seq_id ..._atom_site.auth_asym_id / _atom_site.auth_seq_id / _atom_site.label_asym_id / _chem_comp.name / _chem_comp.type / _entity.formula_weight / _entity.pdbx_description / _entity.pdbx_number_of_molecules / _entity.type / _pdbx_struct_assembly_gen.asym_id_list / _pdbx_validate_close_contact.auth_asym_id_2 / _pdbx_validate_close_contact.auth_seq_id_2 / _struct_conn.pdbx_dist_value / _struct_conn.pdbx_role / _struct_conn.ptnr1_auth_asym_id / _struct_conn.ptnr1_auth_seq_id / _struct_conn.ptnr1_label_asym_id / _struct_conn.ptnr2_auth_asym_id / _struct_conn.ptnr2_auth_seq_id / _struct_conn.ptnr2_label_asym_id
Description: Carbohydrate remediation / Provider: repository / Type: Remediation

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Structure visualization

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  • Biological unit as complete icosahedral assembly
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  • Biological unit as icosahedral pentamer
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  • Biological unit as icosahedral 23 hexamer
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  • Deposited structure unit
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  • Simplified surface model + fitted atomic model
  • EMDB-8116
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  • Superimposition on EM map
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Structure viewerMolecule:
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Assembly

Deposited unit
A: E protein
B: M protein
C: E protein
D: M protein
E: E protein
F: M protein
hetero molecules


Theoretical massNumber of molelcules
Total (without water)190,0969
Polymers188,8236
Non-polymers1,2733
Water0
1
A: E protein
B: M protein
C: E protein
D: M protein
E: E protein
F: M protein
hetero molecules
x 60


Theoretical massNumber of molelcules
Total (without water)11,405,760540
Polymers11,329,368360
Non-polymers76,392180
Water0
TypeNameSymmetry operationNumber
point symmetry operation60
2


  • Idetical with deposited unit in distinct coordinate
  • icosahedral asymmetric unit
TypeNameSymmetry operationNumber
point symmetry operation1
3
A: E protein
B: M protein
C: E protein
D: M protein
E: E protein
F: M protein
hetero molecules
x 5


  • icosahedral pentamer
  • 950 kDa, 30 polymers
Theoretical massNumber of molelcules
Total (without water)950,48045
Polymers944,11430
Non-polymers6,36615
Water0
TypeNameSymmetry operationNumber
point symmetry operation5
4
A: E protein
B: M protein
C: E protein
D: M protein
E: E protein
F: M protein
hetero molecules
x 6


  • icosahedral 23 hexamer
  • 1.14 MDa, 36 polymers
Theoretical massNumber of molelcules
Total (without water)1,140,57654
Polymers1,132,93736
Non-polymers7,63918
Water0
TypeNameSymmetry operationNumber
point symmetry operation6
5


  • Idetical with deposited unit in distinct coordinate
  • icosahedral asymmetric unit, std point frame
TypeNameSymmetry operationNumber
transform to point frame1
SymmetryPoint symmetry: (Schoenflies symbol: I (icosahedral))

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Components

#1: Protein E protein / capsid E protein


Mass: 54444.051 Da / Num. of mol.: 3 / Source method: isolated from a natural source / Source: (natural) Zika virus / References: UniProt: A0A060H177, UniProt: A0A024B7W1*PLUS
#2: Protein M protein


Mass: 8496.883 Da / Num. of mol.: 3 / Fragment: UNP residues 179-253 / Source method: isolated from a natural source / Source: (natural) Zika virus / References: UniProt: A0A096XFQ2, UniProt: A0A024B7W1*PLUS
#3: 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-Glycam 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
[]{[(4+1)][b-D-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}}LINUCSPDB-CARE

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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

ComponentName: Zika virus / Type: VIRUS
Details: Low passage Vero cells, derived from African green monkey kidney cells, were chosen for propagating the virus.
Entity ID: #1-#2 / Source: MULTIPLE SOURCES
Source (natural)Organism: Zika virus
Details of virusEmpty: NO / Enveloped: YES / Isolate: STRAIN / Type: VIRION
Natural hostOrganism: Homo sapiens
Virus shellName: capsid shell / Diameter: 490 nm / Triangulation number (T number): 3
Buffer solutionpH: 8
Buffer component
IDConc.NameFormulaBuffer-ID
1100 mMsodium chlorideNaclSodium chloride1
220 MMTrisTris1
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: COPPER / Grid mesh size: 400 divisions/in. / Grid type: UC-A on holey carbon
VitrificationInstrument: GATAN CRYOPLUNGE 3 / Cryogen name: ETHANE / Humidity: 70 % / Chamber temperature: 298 K
Details: Blot for 5 seconds before plunging into liquid ethane (GATAN CRYOPLUNGE 3).

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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 FIELDBright-field microscopy / Nominal magnification: 14000 X / Nominal defocus max: 2500 nm / Nominal defocus min: 1000 nm / Calibrated defocus min: 1000 nm / Calibrated defocus max: 2500 nm / Cs: 2.7 mm / C2 aperture diameter: 100 µm / Alignment procedure: COMA FREE
Specimen holderCryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Temperature (max): 80 K / Temperature (min): 80 K
Image recordingAverage exposure time: 14 sec. / Electron dose: 23 e/Å2 / Detector mode: SUPER-RESOLUTION / Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Num. of grids imaged: 1 / Num. of real images: 2974
Image scansSampling size: 1.04 µm / Width: 7420 / Height: 7676 / Movie frames/image: 70 / Used frames/image: 2-70

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Processing

EM software
IDNameVersionCategory
1Appion3.2particle selection
2Leginonimage acquisition
4CTFFIND3CTF correction
9PHENIX1.10.1-2155model refinement
10jspr2015initial Euler assignment
11jspr2015final Euler assignment
12jspr2015classification
13jspr20153D reconstruction
Image processingDetails: The images were normalized.
CTF correctionDetails: Phase flipping was performed during 3D reconstruction.
Type: PHASE FLIPPING ONLY
Particle selectionNum. of particles selected: 64518
Details: Particles were picked from 2-binned images using the template-picking method from Appion.
SymmetryPoint symmetry: I (icosahedral)
3D reconstructionResolution: 3.8 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 11842 / Algorithm: FOURIER SPACE
Details: Soft mark was applied to the even/odd map before FSC calculation.
Num. of class averages: 3 / Symmetry type: POINT
Atomic model buildingB value: 150 / Protocol: AB INITIO MODEL / Space: REAL
Target criteria: T = Tmap + weight * TrestraintsT = Tmap + weight * Trestraints

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