6WOR

Structure of the broadly neutralizing antibody HC1AM

  • Classification: IMMUNE SYSTEM
  • Organism(s): Homo sapiens
  • Expression System: Homo sapiens
  • Mutation(s): No 

  • Deposited: 2020-04-25 Released: 2020-08-19 
  • Deposition Author(s): Tzarum, N., Wilson, I.A., Law, M.
  • Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.221 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

An alternate conformation of HCV E2 neutralizing face as an additional vaccine target.

Tzarum, N.Giang, E.Kadam, R.U.Chen, F.Nagy, K.Augestad, E.H.Velazquez-Moctezuma, R.Keck, Z.Y.Hua, Y.Stanfield, R.L.Dreux, M.Prentoe, J.Foung, S.K.H.Bukh, J.Wilson, I.A.Law, M.

(2020) Sci Adv 6: eabb5642-eabb5642

  • DOI: 10.1126/sciadv.abb5642
  • Primary Citation of Related Structures:  
    6WO3, 6WO4, 6WO5, 6WOQ, 6WOR, 6WOS

  • PubMed Abstract: 
  • To achieve global elimination of hepatitis C virus (HCV), an effective cross-genotype vaccine is needed. The HCV envelope glycoprotein E2 is the main target for neutralizing antibodies (nAbs), which aid in HCV clearance and protection. E2 is structurally flexible and functions in engaging host receptors ...

    To achieve global elimination of hepatitis C virus (HCV), an effective cross-genotype vaccine is needed. The HCV envelope glycoprotein E2 is the main target for neutralizing antibodies (nAbs), which aid in HCV clearance and protection. E2 is structurally flexible and functions in engaging host receptors. Many nAbs bind to the "neutralizing face" on E2, including several broadly nAbs encoded by the V H 1-69 germline gene family that bind to a similar conformation (A) of this face. Here, a previously unknown conformation (B) of the neutralizing face is revealed in crystal structures of two of four additional E2-V H 1-69 nAb complexes. In this conformation, the E2 front-layer region is displaced upon antibody binding, exposing residues in the back layer for direct antibody interaction. This E2 B structure may represent another conformational state in the viral entry process that is susceptible to antibody neutralization and thus provide a new target for rational vaccine development.


    Organizational Affiliation

    Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA 92037, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Fab HC1AM heavy chainA [auth H]229Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Fab HC1AM light chainB [auth L]215Homo sapiensMutation(s): 0 
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.219 
  • R-Value Observed: 0.221 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 65.639α = 90
b = 80.966β = 90
c = 181.01γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
Blu-Icedata collection
HKL-2000data reduction
SCALEPACKdata scaling
PHASERphasing

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesAl123365
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)United StatesAl106005

Revision History  (Full details and data files)

  • Version 1.0: 2020-08-19
    Type: Initial release