7OCO

Hepatitis B core protein -low secretion phenotype L60V


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Starting Model: experimental
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wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Conformational Plasticity of Hepatitis B Core Protein Spikes Promotes Peptide Binding Independent of the Secretion Phenotype.

Makbul, C.Khayenko, V.Maric, H.M.Bottcher, B.

(2021) Microorganisms 9

  • DOI: https://doi.org/10.3390/microorganisms9050956
  • Primary Citation of Related Structures:  
    7OCO, 7OCW, 7OD4, 7OD6, 7OD7, 7OD8, 7OEN, 7OEV, 7OEW

  • PubMed Abstract: 

    Hepatitis B virus is a major human pathogen, which forms enveloped virus particles. During viral maturation, membrane-bound hepatitis B surface proteins package hepatitis B core protein capsids. This process is intercepted by certain peptides with an "LLGRMKG" motif that binds to the capsids at the tips of dimeric spikes. With microcalorimetry, electron cryo microscopy and peptide microarray-based screens, we have characterized the structural and thermodynamic properties of peptide binding to hepatitis B core protein capsids with different secretion phenotypes. The peptide "GSLLGRMKGA" binds weakly to hepatitis B core protein capsids and mutant capsids with a premature (F97L) or low-secretion phenotype (L60V and P5T). With electron cryo microscopy, we provide novel structures for L60V and P5T and demonstrate that binding occurs at the tips of the spikes at the dimer interface, splaying the helices apart independent of the secretion phenotype. Peptide array screening identifies "SLLGRM" as the core binding motif. This shortened motif binds only to one of the two spikes in the asymmetric unit of the capsid and induces a much smaller conformational change. Altogether, these comprehensive studies suggest that the tips of the spikes act as an autonomous binding platform that is unaffected by mutations that affect secretion phenotypes.


  • Organizational Affiliation

    Rudolf Virchow Center, Center for Integrative and Translational Bioimaging, University of Würzburg, 97080 Würzburg, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Capsid proteinA [auth B],
B [auth A],
C,
D
183Hepatitis B virus ayw/France/Tiollais/1979Mutation(s): 0 
UniProt
Find proteins for P03146 (Hepatitis B virus genotype D subtype ayw (isolate France/Tiollais/1979))
Explore P03146 
Go to UniProtKB:  P03146
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP03146
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.20 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONRELION3.1
MODEL REFINEMENTPHENIX
MODEL REFINEMENTCoot

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
German Research Foundation (DFG)Germanybo1150/17-1

Revision History  (Full details and data files)

  • Version 1.0: 2021-05-26
    Type: Initial release
  • Version 1.1: 2024-07-10
    Changes: Data collection, Database references, Refinement description