1E07

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


Experimental Data Snapshot

  • Method: SOLUTION SCATTERING

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

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


  • 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 validate ...

    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.


    Related Citations: 
    • Crystal Structure of the Anti-(Carcinoembryonic Antigen) Single-Chain Fv Antibody Mfe-23 and a Model for Antigen Binding Based on Intermolecular Contacts.
      Boehm, M.K.,Corper, A.L.,Wan, T.,Sohi, M.K.,Sutton, B.J.,Thornton, J.D.,Keep, P.A.,Chester, K.A.,Begent, R.H.,Perkins, S.J.
      (2000) Biochem.J. 346: 519
    • Extended Glycoprotein Structure of the Seven Domains in Human Carcinoembryonic Antigen by X-Ray and Neutron Solution Scattering and an Automated Curve Fitting Procedure: Implications for Cellular Adhesion.
      Boehm, M.K.,Mayans, M.O.,Thornton, J.D.,Begent, R.H.,Keep, P.A.,Perkins, S.J.
      (1996) J.Mol.Biol. 259: 718


    Organizational Affiliation

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




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CARCINOEMBRYONIC ANTIGEN
A
642Homo sapiensMutation(s): 0 
Gene Names: CEACAM5 (CEA)
Find proteins for P06731 (Homo sapiens)
Go to Gene View: CEACAM5
Go to UniProtKB:  P06731
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION SCATTERING
Software Package:
Software NamePurpose
DISCOVERYrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-07-04
    Type: Initial release
  • Version 1.1: 2011-12-28
    Type: Database references, Version format compliance