4Y89

Crystal structure of the N-terminal domain of CEACAM7


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.47 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.143 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the N-terminal dimerization domain of CEACAM7.

Bonsor, D.A.Beckett, D.Sundberg, E.J.

(2015) Acta Crystallogr.,Sect.F 71: 1169-1175

  • DOI: 10.1107/S2053230X15013576

  • PubMed Abstract: 
  • CEACAM7 is a human cellular adhesion protein that is expressed on the surface of colon and rectum epithelial cells and is downregulated in colorectal cancers. It achieves cell adhesion through dimerization of the N-terminal IgV domain. The crystal st ...

    CEACAM7 is a human cellular adhesion protein that is expressed on the surface of colon and rectum epithelial cells and is downregulated in colorectal cancers. It achieves cell adhesion through dimerization of the N-terminal IgV domain. The crystal structure of the N-terminal dimerization domain of CEACAM has been determined at 1.47 Å resolution. The overall fold of CEACAM7 is similar to those of CEACAM1 and CEACAM5; however, there are differences, the most notable of which is an insertion that causes the C'' strand to buckle, leading to the creation of a hydrogen bond in the dimerization interface. The Kdimerization for CEACAM7 determined by sedimentation equilibrium is tenfold tighter than that measured for CEACAM5. These findings suggest that the dimerization affinities of CEACAMs are modulated via sequence variation in the dimerization surface.


    Organizational Affiliation

    Institute of Human Virology, University of Maryland School of Medicine, Baltimore, MD 21201, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Carcinoembryonic antigen-related cell adhesion molecule 7
A, B, C, D
109Homo sapiensMutation(s): 0 
Gene Names: CEACAM7 (CGM2)
Find proteins for Q14002 (Homo sapiens)
Go to Gene View: CEACAM7
Go to UniProtKB:  Q14002
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A, B, D
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.47 Å
  • R-Value Free: 0.193 
  • R-Value Work: 0.143 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 32.623α = 90.00
b = 64.886β = 89.99
c = 103.164γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data scaling
REFMACrefinement
MOLREPphasing
PDB_EXTRACTdata extraction
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-09-02
    Type: Initial release
  • Version 1.1: 2015-09-09
    Type: Database references
  • Version 1.2: 2015-09-16
    Type: Database references