4O51

Crystal structure of the QAA variant of anti-hinge rabbit antibody 2095-2 in complex with IDES hinge peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.184 

wwPDB Validation 3D Report Full Report



Literature

Structure and specificity of an antibody targeting a proteolytically cleaved IgG hinge.

Malia, T.J.Teplyakov, A.Brezski, R.J.Luo, J.Kinder, M.Sweet, R.W.Almagro, J.C.Jordan, R.E.Gilliland, G.L.

(2014) Proteins 82: 1656-1667

  • DOI: 10.1002/prot.24545
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The functional role of human antihinge (HAH) autoantibodies in normal health and disease remains elusive, but recent evidence supports their role in the host response to IgG cleavage by proteases that are prevalent in certain disorders. Characterizat ...

    The functional role of human antihinge (HAH) autoantibodies in normal health and disease remains elusive, but recent evidence supports their role in the host response to IgG cleavage by proteases that are prevalent in certain disorders. Characterization and potential exploitation of these HAH antibodies has been hindered by the absence of monoclonal reagents. 2095-2 is a rabbit monoclonal antibody targeting the IdeS-cleaved hinge of human IgG1. We have determined the crystal structure of the Fab of 2095-2 and its complex with a hinge analog peptide. The antibody is selective for the C-terminally cleaved hinge ending in G236 and this interaction involves an uncommon disulfide in VL CDR3. We probed the importance of the disulfide in VL CDR3 through engineering variants. We identified one variant, QAA, which does not require the disulfide for biological activity or peptide binding. The structure of this variant offers a starting point for further engineering of 2095-2 with the same specificity, but lacking the potential manufacturing liability of an additional disulfide. Proteins 2014; 82:1656-1667. © 2014 Wiley Periodicals, Inc.


    Organizational Affiliation

    Biologics Research, Janssen Research and Development, LLC, Spring House, Pennsylvania.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
QAA-2095-2 light chainA, C, E, L216Oryctolagus cuniculusHomo sapiens
This entity is chimeric
Mutation(s): 0 
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
QAA-2095-2 heavy chainB, D, F, H223Oryctolagus cuniculusHomo sapiens
This entity is chimeric
Mutation(s): 0 
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  • Reference Sequence
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Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
IDES hinge peptideM, N, O, P14Homo sapiensMutation(s): 0 
Gene Names: IGHG1
Find proteins for P01857 (Homo sapiens)
Explore P01857 
Go to UniProtKB:  P01857
NIH Common Fund Data Resources
PHAROS  P01857
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
PCA
Query on PCA
A,C,E,LL-PEPTIDE LINKINGC5 H7 N O3GLN
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.184 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 128.51α = 90
b = 93.87β = 90.04
c = 74.73γ = 90
Software Package:
Software NamePurpose
CrystalCleardata collection
PHASERphasing
PHENIXrefinement
XDSdata reduction
XDSdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-03-26
    Type: Initial release
  • Version 1.1: 2014-04-02
    Changes: Database references
  • Version 1.2: 2014-08-06
    Changes: Database references
  • Version 2.0: 2019-12-25
    Changes: Derived calculations, Polymer sequence