5W1G

CR1-07 unliganded Fab


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.233 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Vaccine-elicited receptor-binding site antibodies neutralize two New World hemorrhagic fever arenaviruses.

Clark, L.E.Mahmutovic, S.Raymond, D.D.Dilanyan, T.Koma, T.Manning, J.T.Shankar, S.Levis, S.C.Briggiler, A.M.Enria, D.A.Wucherpfennig, K.W.Paessler, S.Abraham, J.

(2018) Nat Commun 9: 1884-1884

  • DOI: 10.1038/s41467-018-04271-z
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • While five arenaviruses cause human hemorrhagic fevers in the Western Hemisphere, only Junin virus (JUNV) has a vaccine. The GP1 subunit of their envelope glycoprotein binds transferrin receptor 1 (TfR1) using a surface that substantially varies in s ...

    While five arenaviruses cause human hemorrhagic fevers in the Western Hemisphere, only Junin virus (JUNV) has a vaccine. The GP1 subunit of their envelope glycoprotein binds transferrin receptor 1 (TfR1) using a surface that substantially varies in sequence among the viruses. As such, receptor-mimicking antibodies described to date are type-specific and lack the usual breadth associated with this mode of neutralization. Here we isolate, from the blood of a recipient of the live attenuated JUNV vaccine, two antibodies that cross-neutralize Machupo virus with varying efficiency. Structures of GP1-Fab complexes explain the basis for efficient cross-neutralization, which involves avoiding receptor mimicry and targeting a conserved epitope within the receptor-binding site (RBS). The viral RBS, despite its extensive sequence diversity, is therefore a target for cross-reactive antibodies with activity against New World arenaviruses of public health concern.


    Organizational Affiliation

    Department of Medicine, Division of Infectious Diseases, Brigham and Women's Hospital, Boston, MA, 02115, USA. abraham@crystal.harvard.edu.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
CR1-07 Fab light chainL222Homo sapiensMutation(s): 0 
Protein Feature View
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  • Reference Sequence

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CR1-07 Fab heavy chainH223Homo sapiensMutation(s): 0 
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.231 
  • R-Value Observed: 0.233 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 89.77α = 90
b = 137.41β = 148.66
c = 78.67γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data collection
XSCALEdata scaling
PDB_EXTRACTdata extraction
XDSdata reduction
BALBESphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesAI007061
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesAI109740
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesDP5OD023084
Other privateUnited States--
Other privateUnited States--

Revision History 

  • Version 1.0: 2018-05-30
    Type: Initial release
  • Version 1.1: 2020-01-01
    Changes: Author supporting evidence