Model of human carcinoembryonic antigen by homology modelling and curve-fitting to experimental solution scattering data

Experimental Data Snapshot


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Structural models for carcinoembryonic antigen and its complex with the single-chain Fv antibody molecule MFE23.

Boehm, M.K.Perkins, S.J.

(2000) FEBS Lett 475: 11-16

  • DOI: https://doi.org/10.1016/s0014-5793(00)01612-4
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    MFE23 is a single chain Fv antibody that has a high affinity for carcinoembryonic antigen (CEA). A full homology model for CEA based on V-type, I-type and C2-type immunoglobulin folds, 28 oligosaccharides and the interdomain angle of CD2 was validated using solution scattering data. The superimposition of the intermolecular contacts observed in our recent crystal structure of MFE23 with the N-terminal domain of CEA permitted the MFE23-CEA complex to be modelled. Good surface and electrostatic complementarity and carbohydrate-unhindered access of MFE23 with the indentation between the first two CEA domains was observed. The model is supported by biochemical data and provides insight on the high affinity of MFE23 for CEA.

  • Organizational Affiliation

    Department of Biochemistry and Molecular Biology, Royal Free and University College Medical School, University College London, London, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
CARCINOEMBRYONIC ANTIGEN642Homo sapiensMutation(s): 0 
Gene Names: CEACAM5CEA
UniProt & NIH Common Fund Data Resources
Find proteins for P06731 (Homo sapiens)
Explore P06731 
Go to UniProtKB:  P06731
PHAROS:  P06731
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Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP06731
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data


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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2000-07-04
    Type: Initial release
  • Version 1.1: 2011-12-28
    Changes: Database references, Version format compliance
  • Version 1.2: 2019-10-09
    Changes: Data collection, Database references