1GSM

A reassessment of the MAdCAM-1 structure and its role in integrin recognition.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.218 

Starting Model: experimental
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This is version 1.5 of the entry. See complete history


Literature

A Reassessment of the Madcam-1 Structure and its Role in Integrin Recognition

Dando, J.Wilkinson, K.W.Ortlepp, S.King, D.J.Brady, R.L.

(2002) Acta Crystallogr D Biol Crystallogr 58: 233

  • DOI: https://doi.org/10.1107/s0907444901020522
  • Primary Citation of Related Structures:  
    1GSM

  • PubMed Abstract: 

    Mucosal addressin cell-adhesion molecule (MAdCAM-1) is a membrane-bound leukocyte receptor regulating both the passage and retention of leukocytes in mucosal tissues. A crystal structure for the two extracellular amino-terminal domains of human MAdCAM-1 has previously been reported, confirming their expected immunoglobulin superfamily topology. In this study, a second crystal structure of this fragment is described. Although the overall structure is similar to that previously reported, one edge strand in the amino-terminal domain is instead located on the opposite sheet. This alters the arrangement and conformation of amino acids in this region that have previously been shown to be crucial for ligand binding. MAdCAM-1 is also seen to form dimers within the crystal lattice, raising the possibility that oligomerization may influence the biological role of this adhesion molecule.


  • Organizational Affiliation

    Department of Biochemistry, University of Bristol, Bristol BS8 1TD, England.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
MUCOSAL ADDRESSIN CELL ADHESION MOLECULE-1210Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for Q13477 (Homo sapiens)
Explore Q13477 
Go to UniProtKB:  Q13477
PHAROS:  Q13477
GTEx:  ENSG00000099866 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ13477
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.217 
  • R-Value Observed: 0.218 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 64α = 90
b = 99.2β = 90
c = 70.5γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
CCP4phasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-01-29
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2019-07-24
    Changes: Advisory, Data collection
  • Version 1.4: 2023-12-13
    Changes: Advisory, Data collection, Database references, Other, Refinement description
  • Version 1.5: 2024-10-23
    Changes: Structure summary