1QGT

HUMAN HEPATITIS B VIRAL CAPSID (HBCAG)

• PDB DOI: https://doi.org/10.2210/pdb1QGT/pdb

• Classification: VIRUS
• Organism(s): Hepatitis B virus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 1999-05-05 Released: 1999-06-25 
• Deposition Author(s): Leslie, A.G.W., Wynne, S.A., Crowther, R.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.30 Å
• R-Value Work: 0.271 

Literature

The crystal structure of the human hepatitis B virus capsid.

Wynne, S.A., Crowther, R.A., Leslie, A.G.

(1999) Mol Cell 3: 771-780

• PubMed: 10394365 
• DOI: https://doi.org/10.1016/s1097-2765(01)80009-5
• Primary Citation of Related Structures:  
  1QGT


• PubMed Abstract: 
  

  Hepatitis B is a small enveloped DNA virus that poses a major hazard to human health. The crystal structure of the T = 4 capsid has been solved at 3.3 A resolution, revealing a largely helical protein fold that is unusual for icosahedral viruses. The monomer fold is stabilized by a hydrophobic core that is highly conserved among human viral variants. Association of two amphipathic alpha-helical hairpins results in formation of a dimer with a four-helix bundle as the major central feature. The capsid is assembled from dimers via interactions involving a highly conserved region near the C terminus of the truncated protein used for crystallization. The major immunodominant region lies at the tips of the alpha-helical hairpins that form spikes on the capsid surface.

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Organizational Affiliation: 

Medical Research Council, Laboratory of Molecular Biology, Cambridge, United Kingdom.

Biological Assembly 1  

Global Symmetry: Icosahedral - I  (Explore in 3D)
Global Stoichiometry: Homo 240-mer - A240 

Biological assembly 1 assigned by authors and generated by (software)

Macromolecule Content

• Total Structure Weight: 67.47 kDa 
• Atom Count: 4,560 
• Modelled Residue Count: 570 
• Deposited Residue Count: 596 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PROTEIN (HBV CAPSID PROTEIN)	A [auth C], B [auth D], C [auth B], D [auth A]	149	Hepatitis B virus	Mutation(s): 0
UniProt
Find proteins for Q67855 (Hepatitis B virus) Explore Q67855  Go to UniProtKB:  Q67855

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.30 Å
• R-Value Work: 0.271 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 538.4	α = 90
b = 354.8	β = 132.3
c = 370.1	γ = 90

Software Package:

Software Name	Purpose
MOSFLM	data reduction
CCP4	data reduction
CCP4	model building
SOLOMON	phasing
SIGMAA	model building
X-PLOR	refinement
CCP4	data scaling
CCP4	phasing
SIGMAA	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1999-06-25 
Deposition Author(s): Leslie, A.G.W., Wynne, S.A., Crowther, R.A.

Revision History  

• Version 1.0: 1999-06-25
  Type: Initial release
  
• Version 1.1: 2008-04-26
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-10-04
  Changes: Refinement description
• Version 1.4: 2024-10-09
  Changes: Data collection, Database references, Derived calculations, Structure summary