6CWT

Hepatitis B core-antigen in complex with Fab e21


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.151 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.231 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structures of Hepatitis B Virus Core- and e-Antigen Immune Complexes Suggest Multi-point Inhibition.

Eren, E.Watts, N.R.Dearborn, A.D.Palmer, I.W.Kaufman, J.D.Steven, A.C.Wingfield, P.T.

(2018) Structure 26: 1314

  • DOI: 10.1016/j.str.2018.06.012
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Hepatitis B virus (HBV) is the leading cause of liver disease worldwide. While an adequate vaccine is available, current treatment options are limited, not highly effective, and associated with adverse effects, encouraging the development of alternat ...

    Hepatitis B virus (HBV) is the leading cause of liver disease worldwide. While an adequate vaccine is available, current treatment options are limited, not highly effective, and associated with adverse effects, encouraging the development of alternative therapeutics. The HBV core gene encodes two different proteins: core, which forms the viral nucleocapsid, and pre-core, which serves as an immune modulator with multiple points of action. The two proteins mostly have the same sequence, although they differ at their N and C termini and in their dimeric arrangements. Previously, we engineered two human-framework antibody fragments (Fab/scFv) with nano- to picomolar affinities for both proteins. Here, by means of X-ray crystallography, analytical ultracentrifugation, and electron microscopy, we demonstrate that the antibodies have non-overlapping epitopes and effectively block biologically important assemblies of both proteins. These properties, together with the anticipated high tolerability and long half-lives of the antibodies, make them promising therapeutics.


    Organizational Affiliation

    Laboratory of Structural Biology Research, NIAMS, National Institutes of Health, Bethesda, MD 20892, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Fab e21 heavy chain
A, C
233N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Fab e21 light chain
B, D
216N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Capsid protein
E, F
149Hepatitis B virus genotype D subtype adw (isolate United Kingdom/adyw/1979)Mutation(s): 2 
Gene Names: C
Find proteins for P03147 (Hepatitis B virus genotype D subtype adw (isolate United Kingdom/adyw/1979))
Go to UniProtKB:  P03147
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.151 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.231 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 238.376α = 90.00
b = 66.523β = 110.30
c = 104.232γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
HKL-2000data reduction
PHENIXrefinement
PHENIXphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Arthritis and Musculoskeletal and Skin DiseasesUnited StatesIntramural Research

Revision History 

  • Version 1.0: 2018-08-29
    Type: Initial release
  • Version 1.1: 2018-10-17
    Type: Data collection, Database references, Source and taxonomy