2PET

Lutheran glycoprotein, N-terminal domains 1 and 2.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.168 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

The Laminin 511/521-binding site on the Lutheran blood group glycoprotein is located at the flexible junction of Ig domains 2 and 3.

Mankelow, T.J.Burton, N.Stefansdottir, F.O.Spring, F.A.Parsons, S.F.Pedersen, J.S.Oliveira, C.L.Lammie, D.Wess, T.Mohandas, N.Chasis, J.A.Brady, R.L.Anstee, D.J.

(2007) Blood 110: 3398-3406

  • DOI: 10.1182/blood-2007-06-094748
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The Lutheran blood group glycoprotein, first discovered on erythrocytes, is widely expressed in human tissues. It is a ligand for the alpha5 subunit of Laminin 511/521, an extracellular matrix protein. This interaction may contribute to vaso-occlusiv ...

    The Lutheran blood group glycoprotein, first discovered on erythrocytes, is widely expressed in human tissues. It is a ligand for the alpha5 subunit of Laminin 511/521, an extracellular matrix protein. This interaction may contribute to vaso-occlusive events that are an important cause of morbidity in sickle cell disease. Using x-ray crystallography, small-angle x-ray scattering, and site-directed mutagenesis, we show that the extracellular region of Lutheran forms an extended structure with a distinctive bend between the second and third immunoglobulin-like domains. The linker between domains 2 and 3 appears to be flexible and is a critical determinant in maintaining an overall conformation for Lutheran that is capable of binding to Laminin. Mutagenesis studies indicate that Asp312 of Lutheran and the surrounding cluster of negatively charged residues in this linker region form the Laminin-binding site. Unusually, receptor binding is therefore not a function of the domains expected to be furthermost from the plasma membrane. These studies imply that structural flexibility of Lutheran may be essential for its interaction with Laminin and present a novel opportunity for the development of therapeutics for sickle cell disease.


    Organizational Affiliation

    Bristol Institute for Transfusion Sciences, National Blood Service, Southmead Road, Bristol, United Kingdom. tosti.mankelow@nbs.nhs.uk




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Lutheran blood group glycoprotein
A
231Homo sapiensMutation(s): 0 
Gene Names: BCAM (LU, MSK19)
Find proteins for P50895 (Homo sapiens)
Go to Gene View: BCAM
Go to UniProtKB:  P50895
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.168 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 32.955α = 90.00
b = 111.062β = 90.45
c = 35.301γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data collection
REFMACrefinement
MLPHAREphasing
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-12-04
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Advisory, Version format compliance