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 
  • R-Value Observed: 0.145 

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 F Struct Biol Commun 71: 1169-1175

  • DOI: 10.1107/S2053230X15013576
  • Primary Citation of Related Structures:  
    4Y89

  • 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 structure of the N-terminal dimerization domain of CEACAM has been determined at 1 ...

    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:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Carcinoembryonic antigen-related cell adhesion molecule 7 ABCD109Homo sapiensMutation(s): 0 
Gene Names: CEACAM7CGM2
Find proteins for Q14002 (Homo sapiens)
Explore Q14002 
Go to UniProtKB:  Q14002
NIH Common Fund Data Resources
PHAROS:  Q14002
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download Ideal Coordinates 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 
  • R-Value Observed: 0.145 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 32.623α = 90
b = 64.886β = 89.99
c = 103.164γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
PDB_EXTRACTdata extraction
MOLREPphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

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