2JD4

Mouse laminin alpha1 chain, domains LG4-5


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.230 
  • R-Value Observed: 0.230 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Crystal Structure and Cell Surface Anchorage Sites of Laminin {Alpha}1Lg4-5.

Harrison, D.Hussain, S.A.Combs, A.C.Ervasti, J.M.Yurchenco, P.D.Hohenester, E.

(2007) J Biol Chem 282: 11573

  • DOI: 10.1074/jbc.M610657200
  • Primary Citation of Related Structures:  
    2JD4

  • PubMed Abstract: 
  • The laminin G-like (LG) domains of laminin-111, a glycoprotein widely expressed during embryogenesis, provide cell anchoring and receptor binding sites that are involved in basement membrane assembly and cell signaling. We now report the crystal structure of the laminin alpha1LG4-5 domains and provide a mutational analysis of heparin, alpha-dystroglycan, and galactosylsulfatide binding ...

    The laminin G-like (LG) domains of laminin-111, a glycoprotein widely expressed during embryogenesis, provide cell anchoring and receptor binding sites that are involved in basement membrane assembly and cell signaling. We now report the crystal structure of the laminin alpha1LG4-5 domains and provide a mutational analysis of heparin, alpha-dystroglycan, and galactosylsulfatide binding. The two domains of alpha1LG4-5 are arranged in a V-shaped fashion similar to that observed with laminin alpha2 LG4-5 but with a substantially different interdomain angle. Recombinant alpha1LG4-5 binding to heparin, alpha-dystroglycan, and sulfatides was dependent upon both shared and unique contributions from basic residues distributed in several clusters on the surface of LG4. For heparin, the greatest contribution was detected from two clusters, 2719RKR and 2791KRK. Binding to alpha-dystroglycan was particularly dependent on basic residues within 2719RKR, 2831RAR, and 2858KDR. Binding to galactosylsulfatide was most affected by mutations in 2831RAR and 2766KGRTK but not in 2719RKR. The combined analysis of structure and activities reveal differences in LG domain interactions that should enable dissection of biological roles of different laminin ligands.


    Related Citations: 
    • Structure of the C-Terminal Laminin G-Like Domain Pair of the Laminin Alpha2 Chain Harbouring Binding Sites for Alpha-Dystroglycan and Heparin
      Tisi, D., Talts, J.F., Timpl, R., Hohenester, E.
      (2000) EMBO J 19: 1432
    • Laminin Functions in Tissue Morphogenesis
      Miner, J.H., Yurchenco, P.D.
      (2004) Annu Rev Cell Dev Biol 20: 255

    Organizational Affiliation

    Department of Pathology and Laboratory Medicine, Robert Wood Johnson Medical School, Piscataway, New Jersey 08854, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
LAMININ SUBUNIT ALPHA-1A, B383Mus musculusMutation(s): 4 
Gene Names: Lama1LamaLama-1
UniProt & NIH Common Fund Data Resources
Find proteins for P19137 (Mus musculus)
Explore P19137 
Go to UniProtKB:  P19137
IMPC:  MGI:99892
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.230 
  • R-Value Observed: 0.230 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.53α = 90
b = 55.812β = 98.48
c = 100.986γ = 90
Software Package:
Software NamePurpose
CNSrefinement
MOSFLMdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-02-27
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance