[English] 日本語
Yorodumi- EMDB-5282: Poliovirus 135S particle and P1 Fab complex at 26-angs. resolutio... -
+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-5282 | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Title | Poliovirus 135S particle and P1 Fab complex at 26-angs. resolution (after classification) | |||||||||
Map data | This is a map of poliovirus 135S particle and P1 Fab complex at 26-angs. resolution. | |||||||||
Sample |
| |||||||||
Keywords | picornavirus / viral cell entry / viral uncoating / virus-antibody complex / virus-Fab complex / virus disassembly / virus uncoating / virus conformational transitions / monospecific antibody | |||||||||
Biological species | Human poliovirus 1 Mahoney | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 26.0 Å | |||||||||
Authors | Lin J / Cheng N / Chow M / Filman DJ / Steven AC / Hogle JM / Belnap DM | |||||||||
Citation | Journal: J Virol / Year: 2011 Title: An externalized polypeptide partitions between two distinct sites on genome-released poliovirus particles. Authors: Jun Lin / Naiqian Cheng / Marie Chow / David J Filman / Alasdair C Steven / James M Hogle / David M Belnap / Abstract: During cell entry, native poliovirus (160S) converts to a cell-entry intermediate (135S) particle, resulting in the externalization of capsid proteins VP4 and the amino terminus of VP1 (residues 1 to ...During cell entry, native poliovirus (160S) converts to a cell-entry intermediate (135S) particle, resulting in the externalization of capsid proteins VP4 and the amino terminus of VP1 (residues 1 to 53). Externalization of these entities is followed by release of the RNA genome (uncoating), leaving an empty (80S) particle. The antigen-binding fragment (Fab) of a monospecific peptide 1 (P1) antibody, which was raised against a peptide corresponding to amino-terminal residues 24 to 40 of VP1, was utilized to track the location of the amino terminus of VP1 in the 135S and 80S states of poliovirus particles via cryogenic electron microscopy (cryo-EM) and three-dimensional image reconstruction. On 135S, P1 Fabs bind to a prominent feature on the external surface known as the "propeller tip." In contrast, our initial 80S-P1 reconstruction showed P1 Fabs also binding to a second site, at least 50 Å distant, at the icosahedral 2-fold axes. Further analysis showed that the overall population of 80S-P1 particles consisted of three kinds of capsids: those with P1 Fabs bound only at the propeller tips, P1 Fabs bound only at the 2-fold axes, or P1 Fabs simultaneously bound at both positions. Our results indicate that, in 80S particles, a significant fraction of VP1 can deviate from icosahedral symmetry. Hence, this portion of VP1 does not change conformation synchronously when switching from the 135S state. These conclusions are compatible with previous observations of multiple conformations of the 80S state and suggest that movement of the amino terminus of VP1 has a role in uncoating. Similar deviations from icosahedral symmetry may be biologically significant during other viral transitions. | |||||||||
History |
|
-Structure visualization
Movie |
Movie viewer |
---|---|
Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_5282.map.gz | 34.7 MB | EMDB map data format | |
---|---|---|---|---|
Header (meta data) | emd-5282-v30.xml emd-5282.xml | 10 KB 10 KB | Display Display | EMDB header |
Images | emd_5282_1.jpg | 1.1 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-5282 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-5282 | HTTPS FTP |
-Validation report
Summary document | emd_5282_validation.pdf.gz | 78.5 KB | Display | EMDB validaton report |
---|---|---|---|---|
Full document | emd_5282_full_validation.pdf.gz | 77.6 KB | Display | |
Data in XML | emd_5282_validation.xml.gz | 493 B | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-5282 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-5282 | HTTPS FTP |
-Related structure data
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
---|---|
Related items in Molecule of the Month |
-Map
File | Download / File: emd_5282.map.gz / Format: CCP4 / Size: 70.9 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Annotation | This is a map of poliovirus 135S particle and P1 Fab complex at 26-angs. resolution. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.83 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
|
-Supplemental data
-Sample components
-Entire : Poliovirus 135S particle and P1(monospecific antibody) Fab complex
Entire | Name: Poliovirus 135S particle and P1(monospecific antibody) Fab complex |
---|---|
Components |
|
-Supramolecule #1000: Poliovirus 135S particle and P1(monospecific antibody) Fab complex
Supramolecule | Name: Poliovirus 135S particle and P1(monospecific antibody) Fab complex type: sample / ID: 1000 / Oligomeric state: 135S particle icosahedral with Fab / Number unique components: 2 |
---|
-Supramolecule #1: Human poliovirus 1 Mahoney
Supramolecule | Name: Human poliovirus 1 Mahoney / type: virus / ID: 1 / Name.synonym: poliovirus 135S Details: native virus 160S is converted by heat-treatment to 135S NCBI-ID: 12081 / Sci species name: Human poliovirus 1 Mahoney / Database: NCBI / Virus type: VIRION / Virus isolate: STRAIN / Virus enveloped: No / Virus empty: No / Syn species name: poliovirus 135S |
---|---|
Host (natural) | Organism: Homo sapiens (human) / synonym: VERTEBRATES |
Virus shell | Shell ID: 1 / Diameter: 340 Å / T number (triangulation number): 1 |
-Experimental details
-Structure determination
Method | cryo EM |
---|---|
Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.5 / Details: 20 mM Tris, 2 mM CaCl2 |
---|---|
Vitrification | Cryogen name: ETHANE / Instrument: OTHER Details: Vitrification carried out in ambient atmosphere. Ethane cooled by liquid nitrogen. Method: Blotted manually before plunging |
-Electron microscopy
Microscope | FEI/PHILIPS CM200FEG |
---|---|
Alignment procedure | Legacy - Astigmatism: Bsoft |
Date | Jul 15, 1999 |
Image recording | Category: FILM / Film or detector model: KODAK SO-163 FILM / Digitization - Scanner: ZEISS SCAI / Digitization - Sampling interval: 7 µm / Number real images: 14 / Average electron dose: 10 e/Å2 / Details: Defocal pairs were used. / Bits/pixel: 8 |
Tilt angle min | 0 |
Tilt angle max | 0 |
Electron beam | Acceleration voltage: 120 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Calibrated magnification: 37752 / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2 mm / Nominal defocus max: 2.24 µm / Nominal defocus min: 0.81 µm / Nominal magnification: 38000 |
Sample stage | Specimen holder: Side entry liquid nitrogen-cooled cryo specimen holder Specimen holder model: GATAN LIQUID NITROGEN |
-Image processing
CTF correction | Details: CTF and decay correction of each particle |
---|---|
Final reconstruction | Algorithm: OTHER / Resolution.type: BY AUTHOR / Resolution: 26.0 Å / Resolution method: FSC 0.5 CUT-OFF / Software - Name: EM3DR2 Details: Reconstruction computed from focal pairs. Pairs not summed for reconstruction calculation. Number images used: 2110 |