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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-0271 | |||||||||
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Title | WT Hepatitis B core protein capsid | |||||||||
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![]() | Hepatitis B virus != Hepatitis B virus ayw/France/Tiollais/1979 Hepatitis B virus
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Function / homology | ![]() microtubule-dependent intracellular transport of viral material towards nucleus / T=4 icosahedral viral capsid / viral penetration into host nucleus / host cell / host cell cytoplasm / symbiont entry into host cell / structural molecule activity / DNA binding / RNA binding Similarity search - Function | |||||||||
Biological species | ![]() | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.66 Å | |||||||||
![]() | Bottcher B / Nassal M | |||||||||
Funding support | ![]()
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![]() | ![]() Title: Structure of Mutant Hepatitis B Core Protein Capsids with Premature Secretion Phenotype. Authors: Bettina Böttcher / Michael Nassal / ![]() Abstract: Hepatitis B virus is a major human pathogen that consists of a viral genome surrounded by an icosahedrally ordered core protein and a polymorphic, lipidic envelope that is densely packed with surface ...Hepatitis B virus is a major human pathogen that consists of a viral genome surrounded by an icosahedrally ordered core protein and a polymorphic, lipidic envelope that is densely packed with surface proteins. A point mutation in the core protein in which a phenylalanine at position 97 is exchanged for a smaller leucine leads to premature envelopment of the capsid before the genome maturation is fully completed. We have used electron cryo-microscopy and image processing to investigate how the point mutation affects the structure of the capsid at 2.6- to 2.8 Å-resolution. We found that in the mutant the smaller side chain at position 97 is displaced, increasing the size of an adjacent pocket in the center of the spikes of the capsid. In the mutant, this pocket is filled with an unknown density. Phosphorylation of serine residues in the unresolved C-terminal domain of the mutant leaves the structure of the ordered capsid largely unchanged. However, we were able to resolve several previously unresolved residues downstream of proline 144 that precede the phosphorylation-sites. These residues pack against the neighboring subunits and increase the inter-dimer contact suggesting that the C-termini play an important role in capsid stabilization and provide a much larger interaction interface than previously observed. | |||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 392.5 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 19.4 KB 19.4 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 18 KB | Display | ![]() |
Images | ![]() | 489.4 KB | ||
Masks | ![]() | 512 MB | ![]() | |
Others | ![]() ![]() | 410.6 MB 410.4 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6htxMC ![]() 0272C ![]() 0273C ![]() 6hu4C ![]() 6hu7C M: atomic model generated by this map C: citing same article ( |
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Similar structure data |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Voxel size | X=Y=Z: 1.04 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Mask #1
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Projections & Slices |
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Density Histograms |
-Half map: #2
File | emd_0271_half_map_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Half map: #1
File | emd_0271_half_map_2.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
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Sample components
-Entire : Hepatitis B virus
Entire | Name: ![]() ![]() |
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Components |
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-Supramolecule #1: Hepatitis B virus ayw/France/Tiollais/1979
Supramolecule | Name: Hepatitis B virus ayw/France/Tiollais/1979 / type: virus / ID: 1 / Parent: 0 / Macromolecule list: all / NCBI-ID: 490133 Sci species name: Hepatitis B virus ayw/France/Tiollais/1979 Virus type: VIRUS-LIKE PARTICLE / Virus isolate: STRAIN / Virus enveloped: No / Virus empty: No |
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Host (natural) | Organism: ![]() ![]() |
Host system | Organism: ![]() ![]() |
Molecular weight | Theoretical: 4.8 MDa |
Virus shell | Shell ID: 1 / Name: WT Hbc / Diameter: 340.0 Å / T number (triangulation number): 4 |
-Macromolecule #1: Capsid protein
Macromolecule | Name: Capsid protein / type: protein_or_peptide / ID: 1 / Number of copies: 4 / Enantiomer: LEVO |
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Source (natural) | Organism: ![]() |
Molecular weight | Theoretical: 21.146217 KDa |
Recombinant expression | Organism: ![]() ![]() |
Sequence | String: MDIDPYKEFG ATVELLSFLP SDFFPSVRDL LDTASALYRE ALESPEHCSP HHTALRQAIL CWGELMTLAT WVGVNLEDPA SRDLVVSYV NTNMGLKFRQ LLWFHISCLT FGRETVIEYL VSFGVWIRTP PAYRPPNAPI LSTLPETTVV RRRGRSPRRR T PSPRRRRS QSPRRRRSQS RESQC |
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Concentration | 5 mg/mL | |||||||||
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Buffer | pH: 7.7 Component:
Details: 25 mM Tris pH 7.7, 150 mM NaCl | |||||||||
Grid | Model: Quantifoil, UltrAuFoil, R1.2/1.3 / Material: GOLD / Mesh: 300 / Support film - topology: HOLEY ARRAY / Support film - Film thickness: 50.0 nm / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Atmosphere: AIR | |||||||||
Vitrification | Cryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 4 K / Instrument: FEI VITROBOT MARK IV Details: Samples were vitrified with an FEI Vitrobot IV, which was operated at 100% humidity at 4C. 2.5-3.5 ul of sample were applied to grids (Quantifoil UltrAuFoil R1.3/1.2 300 mesh gold grids ) ...Details: Samples were vitrified with an FEI Vitrobot IV, which was operated at 100% humidity at 4C. 2.5-3.5 ul of sample were applied to grids (Quantifoil UltrAuFoil R1.3/1.2 300 mesh gold grids ) that were glow discharged in air for 1-2 min. The sample was incubated for 30 s before blotting for 3 s with a blot force between 0 and 5.. | |||||||||
Details | sample is purified from e.coli via sucrose density gradient. sucrose is removed via buffer exchange on a concentrator |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Specialist optics | Energy filter - Name: GIF Quantum LS / Energy filter - Slit width: 20 eV |
Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Detector mode: SUPER-RESOLUTION / Digitization - Frames/image: 1-40 / Number grids imaged: 1 / Number real images: 5400 / Average electron dose: 32.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | C2 aperture diameter: 70.0 µm / Calibrated defocus max: 1.68 µm / Calibrated defocus min: 0.36 µm / Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal magnification: 75000 |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |