5EA0

Structure of the antibody 7968 with human complement factor H-derived peptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.196 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

A Therapeutic Antibody for Cancer, Derived from Single Human B Cells.

Bushey, R.T.Moody, M.A.Nicely, N.L.Haynes, B.F.Alam, S.M.Keir, S.T.Bentley, R.C.Roy Choudhury, K.Gottlin, E.B.Campa, M.J.Liao, H.X.Patz, E.F.

(2016) Cell Rep 15: 1505-1513

  • DOI: 10.1016/j.celrep.2016.04.038

  • PubMed Abstract: 
  • Some patients with cancer never develop metastasis, and their host response might provide cues for innovative treatment strategies. We previously reported an association between autoantibodies against complement factor H (CFH) and early-stage lung ca ...

    Some patients with cancer never develop metastasis, and their host response might provide cues for innovative treatment strategies. We previously reported an association between autoantibodies against complement factor H (CFH) and early-stage lung cancer. CFH prevents complement-mediated cytotoxicity (CDC) by inhibiting formation of cell-lytic membrane attack complexes on self-surfaces. In an effort to translate these findings into a biologic therapy for cancer, we isolated and expressed DNA sequences encoding high-affinity human CFH antibodies directly from single, sorted B cells obtained from patients with the antibody. The co-crystal structure of a CFH antibody-target complex shows a conformational change in the target relative to the native structure. This recombinant CFH antibody causes complement activation and release of anaphylatoxins, promotes CDC of tumor cell lines, and inhibits tumor growth in vivo. The isolation of anti-tumor antibodies derived from single human B cells represents an alternative paradigm in antibody drug discovery.


    Organizational Affiliation

    Department of Radiology, Duke University Medical Center, Durham, NC 27710, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Heavy chain of antibody 7968 Fab fragment
H
224N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Light chain of antibody 7968 Fab fragment
L
220N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Complement factor H-related protein 2
P
15Homo sapiensMutation(s): 0 
Gene Names: CFHR2 (CFHL2, FHR2, HFL3)
Find proteins for P36980 (Homo sapiens)
Go to Gene View: CFHR2
Go to UniProtKB:  P36980
Small Molecules
Modified Residues  2 Unique
IDChainsTypeFormula2D DiagramParent
NH2
Query on NH2
P
NON-POLYMERH2 N

--

ACE
Query on ACE
P
NON-POLYMERC2 H4 O

--

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.196 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 51.280α = 90.00
b = 65.547β = 106.37
c = 71.267γ = 90.00
Software Package:
Software NamePurpose
PHENIXphasing
HKL-2000data scaling
HKL-2000data reduction
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-05-25
    Type: Initial release
  • Version 1.1: 2016-06-01
    Type: Database references