6CWD

Hepatitis B core-antigen in complex with scFv e13


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.33 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.245 

wwPDB Validation   3D Report Full Report


This is version 1.2 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:  
    6CWD, 6CVK, 6CWT

  • 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

    Protein Expression Laboratory, NIAMS, National Institutes of Health, Bethesda, MD 20892, USA. Electronic address: wingfiep@mail.nih.gov.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Single chain variable fragment (scFv) e13ABEG261Oryctolagus cuniculusMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Capsid proteinCDFH149Hepatitis B virus subtype adywMutation(s): 2 
Gene Names: C
Find proteins for P03147 (Hepatitis B virus genotype D subtype adw (isolate United Kingdom/adyw/1979))
Explore P03147 
Go to UniProtKB:  P03147
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.33 Å
  • R-Value Free: 0.282 
  • R-Value Work: 0.242 
  • R-Value Observed: 0.245 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 219.54α = 90
b = 65.1β = 101.65
c = 148.21γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
XSCALEdata scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIH/NIAMS)United StatesIntramural Research

Revision History 

  • Version 1.0: 2018-08-29
    Type: Initial release
  • Version 1.1: 2018-10-17
    Changes: Data collection, Database references, Source and taxonomy
  • Version 1.2: 2019-12-11
    Changes: Author supporting evidence