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- PDB-6q0b: Poliovirus (Type 1 Mahoney), receptor-catalysed 135S particle inc... -
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Open data
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Basic information
Entry | Database: PDB / ID: 6q0b | ||||||
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Title | Poliovirus (Type 1 Mahoney), receptor-catalysed 135S particle incubated with anti-VP1 mAb at RT for 1 hr | ||||||
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![]() | VIRUS/IMMUNE SYSTEM / poliovirus / cell-entry intermediate / expanded virus / a-particle / VIRUS-IMMUNE SYSTEM complex | ||||||
Function / homology | ![]() symbiont-mediated suppression of host translation initiation / 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 ...symbiont-mediated suppression of host translation initiation / 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 / endocytosis involved in viral entry into host cell / nucleoside-triphosphate phosphatase / protein complex oligomerization / monoatomic ion channel activity / RNA helicase activity / induction by virus of host autophagy / RNA-directed RNA polymerase / viral RNA genome replication / cysteine-type endopeptidase activity / RNA-dependent RNA polymerase activity / virus-mediated perturbation of host defense response / DNA-templated transcription / host cell nucleus / virion attachment to host cell / structural molecule activity / proteolysis / RNA binding / ATP binding / membrane / metal ion binding Similarity search - Function | ||||||
Biological species | ![]() ![]() ![]() | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.4 Å | ||||||
![]() | Hogle, J.M. / Filman, D.J. / Shah, P.N.M. | ||||||
Funding support | ![]()
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![]() | ![]() Title: Cryo-EM structures reveal two distinct conformational states in a picornavirus cell entry intermediate. Authors: Pranav N M Shah / David J Filman / Krishanthi S Karunatilaka / Emma L Hesketh / Elisabetta Groppelli / Mike Strauss / James M Hogle / ![]() ![]() ![]() Abstract: The virions of enteroviruses such as poliovirus undergo a global conformational change after binding to the cellular receptor, characterized by a 4% expansion, and by the opening of holes at the two ...The virions of enteroviruses such as poliovirus undergo a global conformational change after binding to the cellular receptor, characterized by a 4% expansion, and by the opening of holes at the two and quasi-three-fold symmetry axes of the capsid. The resultant particle is called a 135S particle or A-particle and is thought to be on the pathway to a productive infection. Previously published studies have concluded that the membrane-interactive peptides, namely VP4 and the N-terminus of VP1, are irreversibly externalized in the 135S particle. However, using established protocols to produce the 135S particle, and single particle cryo-electron microscopy methods, we have identified at least two unique states that we call the early and late 135S particle. Surprisingly, only in the "late" 135S particles have detectable levels of the VP1 N-terminus been trapped outside the capsid. Moreover, we observe a distinct density inside the capsid that can be accounted for by VP4 that remains associated with the genome. Taken together our results conclusively demonstrate that the 135S particle is not a unique conformation, but rather a family of conformations that could exist simultaneously. | ||||||
History |
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Structure visualization
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Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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PDBx/mmCIF format | ![]() | 210.6 KB | Display | ![]() |
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PDB format | ![]() | 166.3 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
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-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 20546MC ![]() 6p9oC ![]() 6p9wC ![]() 6pszC M: map data used to model this data C: citing same article ( |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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1 | ![]()
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2 |
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3 | ![]()
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4 | ![]()
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5 | ![]()
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Symmetry | Point symmetry: (Schoenflies symbol: I (icosahedral)) |
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Components
#1: Protein | Mass: 33488.613 Da / Num. of mol.: 1 / Fragment: UNP residues 580-881 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
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#2: Protein | Mass: 30075.783 Da / Num. of mol.: 1 / Fragment: UNP residues 70-341 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#3: Protein | Mass: 26547.482 Da / Num. of mol.: 1 / Fragment: UNP residues 342-579 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#4: Protein | Mass: 7690.482 Da / Num. of mol.: 1 / Fragment: UNP residues 2-70 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
#5: Protein | Mass: 44452.984 Da / Num. of mol.: 1 / Source method: isolated from a natural source / Source: (natural) ![]() ![]() |
Has ligand of interest | N |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
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Sample preparation
Component | Name: Poliovirus type 1 (strain Mahoney) / Type: VIRUS / Entity ID: #1-#3 / Source: NATURAL |
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Molecular weight | Value: 10.0 MDa / Experimental value: NO |
Source (natural) | Organism: ![]() ![]() |
Details of virus | Empty: NO / Enveloped: NO / Isolate: STRAIN / Type: VIRION |
Natural host | Organism: Homo sapiens |
Virus shell | Name: Capsid / Diameter: 300 nm / Triangulation number (T number): 1 |
Buffer solution | pH: 7.5 / Details: 20 mM Tris-HCl, pH 7.5, 2 mM CaCl2 |
Specimen | Conc.: 0.4 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES / Details: This sample was monodisperse. |
Specimen support | Details: unspecified |
Vitrification | Instrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 277 K |
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Electron microscopy imaging
Experimental equipment | ![]() Model: Talos Arctica / Image courtesy: FEI Company |
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Microscopy | Model: FEI TECNAI ARCTICA |
Electron gun | Electron source: ![]() |
Electron lens | Mode: BRIGHT FIELD / Alignment procedure: COMA FREE |
Specimen holder | Cryogen: NITROGEN / Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER |
Image recording | Electron dose: 1.06 e/Å2 / Detector mode: COUNTING / Film or detector model: GATAN K3 (6k x 4k) / Num. of grids imaged: 1 |
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Processing
EM software |
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CTF correction | Type: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||
Symmetry | Point symmetry: I (icosahedral) | ||||||||||||||||||||||||||||||||||||
3D reconstruction | Resolution: 3.4 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 17697 / Symmetry type: POINT | ||||||||||||||||||||||||||||||||||||
Atomic model building | Protocol: FLEXIBLE FIT / Space: REAL |